diff --git a/README.md b/README.md index dea1e6d..0cd1414 100644 --- a/README.md +++ b/README.md @@ -15,21 +15,9 @@ el apartado "Contenido". - [Criptografía asimétrica, RSA](https://juanvvc.github.io/crypto/slides/05-asimetrica.html) - Apéndice: [RND y HSM](https://juanvvc.github.io/crypto/slides/A2-rnd.html) - [Hashes y Bitcoins](https://juanvvc.github.io/crypto/slides/06-hashes.html) -- [Integridad](https://juanvvc.github.io/crypto/slides/07-integridad.html) -- [Public Key Infrastructure](https://juanvvc.github.io/crypto/slides/08-pki.html) -- Apéndice: [Criptografía ofensiva: BEC y Ransomware](https://juanvvc.github.io/crypto/slides/A3-ofensiva.html) -- [Protocolos: TLS](https://juanvvc.github.io/crypto/slides/09-protocolos.html) -- Apéndice: [Comunicaciones anónimas y TOR](https://juanvvc.github.io/crypto/slides/A4-anonimato.html) -- [Autenticación](https://juanvvc.github.io/crypto/slides/10-autenticacion.html) -- [Esteganografía](https://juanvvc.github.io/crypto/slides/11-esteganografia.html) - -Algunas notas: - -- El tema 4 y apéndices son opcionales, dependiendo de las horas disponibles -- Los temas 8, 9 y 10 están muy relacionados entre sí y no siguen un orden lineal -- Contenido sin actualizar, enlace a transparencias de cursos pasados (¡poco a poco!) - - [Message Authentication Code](https://jig.github.io/crypto/es/ecbc-mac.html) - - [El futuro de la criptografía](http://jig.github.io/crypto/es/threats.html) +- [TLS y Public Key Infrastructure](https://juanvvc.github.io/crypto/slides/07-pki.html) +- [Criptografía ofensiva: BEC y Ransomware](https://juanvvc.github.io/crypto/slides/08-ofensiva.html) +- [Esteganografía](https://juanvvc.github.io/crypto/slides/09-esteganografia.html) ## Descarga local @@ -69,7 +57,7 @@ International (CC BY-SA 4.0) ](https://creativecommons.org/licenses/by-sa/4.0/) [![Licencia de Creative Commons](https://licensebuttons.net/l/by-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-sa/4.0/) -Copyright © 2020-2021 [Juan Vera del Campo](https://github.com/juanvvc) +Copyright © 2020-2022 [Juan Vera del Campo](https://github.com/juanvvc) Basado en transparencias Copyright © 2016-2017 [Jordi Íñigo Griera](https://github.com/jig/crypto) diff --git a/docs/abstract.html b/docs/abstract.html deleted file mode 100644 index 0f93310..0000000 --- a/docs/abstract.html +++ /dev/null @@ -1,282 +0,0 @@ - - - - - - - Resumen Criptografía - - - - - - - - - - - - - - - - - - - - - - - - -
- -
-
-

criptografía: funciones $\leftrightarrow$ objetivos

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
-
-

Criptografía sin clave

- - - - - - - - - - - - - -
FunciónObjetivos
$r=\text{hash}(m)$tener un resumen $r$ diferente para diferentes mensajes $m$; -
hace falta recibir/custodiar $r$ de forma fiable; -
implementable con funciones como SHA-2 o SHA-3 -
-
-
-

Criptografía con clave simétrica: $k \leftrightarrow k$

- - - - - - - - - - - - - - - - - - -
FunciónObjetivos
- $t=\text{mac}(k, m)$ -
$\qquad \downarrow$ -
$t\overset{?}{=}\text{mac}(k, m')$ -
tener un valor (resumen o etiqueta $t$) de un $m$ diferente para diferentes $m$; hace falta tratar $k$ confidencialmente; - implementable con funciones de - hash - o de - cifrado simétrico de bloque - (como AES) -
- $c=\text{e}(\text{IV}, k, m)$ -
$\qquad \downarrow$ -
$m=\text{d}(\text{IV}, k, c)$ -
proteger la confidencialidad del $m$ (el $\text{IV}$ se puede enviar en claro sin pérdida de confidencialidad) - lo podemos implementar con cifrado simétrico - (de - flujo - como ChaCha, o de - bloque - como AES) -
- -
-
-

Cripto con clave asimétrica: $k_{\text{priv}} \leftrightarrow k_{\text{pub}}$

- - - - - - - - - - - - - - - - - - - - - -
FunciónObjetivos
$k \leftarrow i \times j$acordar un número aleatorio $k$ derivado de un par de números aleatorios secretos $i$ y $j$; -
lo podemod implementar con - DH -
- $s=\text{firma}(k_{\text{priv}}, m)$ -
$\qquad \downarrow$ -
$\text{ok}=\text{valida}(k_{\text{pub}}, s)$ -
generar una relación $s$ comprobable entre el propietario de $k$ y $m$ (relación de autoría, notaría...); - cualquiera que conozca $k_{\text{pub}}$ puede comprobar su autor y la integridad del mensaje -
lo podemos implementar con - RSA, - DSA o - ECDSA -
- $c=\text{cifra}(k_{\text{pub}}, m)$ -
$\qquad \downarrow$ -
$m=\text{descifra}(k_{\text{priv}}, c)$ -
enviar un mensaje $m$ que por el poseedor de $k_{\text{priv}}$ -
lo podemos implementar con - RSA -
-
-
-

PKI: Autoridades -

-
-
- - - - - - - - - - - - - - - - - -
AutoridadObjetivos
RA - gestionar la validación de credenciales (registro) que demuestra que un titular posee - la clave privada correspondiente a la clave pública que presenta; -
la validación de possesión de la PVK es automática - (validación de un PKCS #10 o de un certificado autofirmado X.509) -
la validación de la identidad del titular puede ser "presencial" (por a certificados - personales, o con políticas de certificación más restrictivas como los certificados - EVC), - en línea (como certificados de cliente basados en posesión de una dirección de correo electrónico, - o como los certificados basados en la posesión de una dirección DNS); - también gestiona los procedimientos de revocación que se publicarán vías CRLA o VA -
CAemite documentos firmados (certificados X.509) que enlazan la identidad del titular con su clave
-
-
- - - - - - - - - - - - - - - - - - - - - -
AutoridadObjetivos
CRLAemitir listas de revocación firmadas periódicamente (con periodos cortos de validez) o bajo - demanda (con periodos largos de validez, debe reemitirse cuando hay alguna nueva revocación) -
VAservir en línea el estado de revocación (de certificados individuales)
TSAemitir pruebas firmadas de que un documento (su hash) existía en un momento dado
-
-
- -
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width: 100%; - padding: 20px 0px; - z-index: 10; - -webkit-transform-style: preserve-3d; - transform-style: preserve-3d; - -webkit-transition: -webkit-transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), -webkit-transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } - -/* Global transition speed settings */ -.reveal[data-transition-speed="fast"] .slides section { - -webkit-transition-duration: 400ms; - transition-duration: 400ms; } - -.reveal[data-transition-speed="slow"] .slides section { - -webkit-transition-duration: 1200ms; - transition-duration: 1200ms; } - -/* Slide-specific transition speed overrides */ -.reveal .slides section[data-transition-speed="fast"] { - -webkit-transition-duration: 400ms; - transition-duration: 400ms; } - -.reveal .slides section[data-transition-speed="slow"] { - -webkit-transition-duration: 1200ms; - transition-duration: 1200ms; } - -.reveal .slides > section.stack { - padding-top: 0; - padding-bottom: 0; } - -.reveal .slides > section.present, -.reveal .slides > section > section.present { - display: block; - z-index: 11; - opacity: 1; } - -.reveal.center, -.reveal.center .slides, -.reveal.center .slides section { - min-height: 0 !important; } - -/* Don't allow interaction with invisible slides */ -.reveal .slides > section.future, -.reveal .slides > section > section.future, -.reveal .slides > section.past, -.reveal .slides > section > section.past { - pointer-events: none; } - -.reveal.overview .slides > section, -.reveal.overview .slides > section > section { - pointer-events: auto; } - -.reveal .slides > section.past, -.reveal .slides > section.future, -.reveal .slides > section > section.past, -.reveal .slides > section > section.future { - opacity: 0; } - -/********************************************* - * Mixins for readability of transitions - *********************************************/ -/********************************************* - * SLIDE TRANSITION - * Aliased 'linear' for backwards compatibility - *********************************************/ -.reveal.slide section { - -webkit-backface-visibility: hidden; - backface-visibility: hidden; } - -.reveal .slides > section[data-transition=slide].past, -.reveal .slides > section[data-transition~=slide-out].past, -.reveal.slide .slides > section:not([data-transition]).past { - -webkit-transform: translate(-150%, 0); - transform: translate(-150%, 0); } - -.reveal .slides > section[data-transition=slide].future, -.reveal .slides > section[data-transition~=slide-in].future, -.reveal.slide .slides > section:not([data-transition]).future { - -webkit-transform: translate(150%, 0); - transform: translate(150%, 0); } - -.reveal .slides > section > section[data-transition=slide].past, -.reveal .slides > section > section[data-transition~=slide-out].past, -.reveal.slide .slides > section > section:not([data-transition]).past { - -webkit-transform: translate(0, -150%); - transform: translate(0, -150%); } - -.reveal .slides > section > section[data-transition=slide].future, -.reveal .slides > section > section[data-transition~=slide-in].future, -.reveal.slide .slides > section > section:not([data-transition]).future { - -webkit-transform: translate(0, 150%); - transform: translate(0, 150%); } - -.reveal.linear section { - -webkit-backface-visibility: hidden; - backface-visibility: hidden; } - -.reveal .slides > section[data-transition=linear].past, -.reveal .slides > section[data-transition~=linear-out].past, -.reveal.linear .slides > section:not([data-transition]).past { - -webkit-transform: translate(-150%, 0); - transform: translate(-150%, 0); } - -.reveal .slides > section[data-transition=linear].future, -.reveal .slides > section[data-transition~=linear-in].future, -.reveal.linear .slides > section:not([data-transition]).future { - -webkit-transform: translate(150%, 0); - transform: translate(150%, 0); } - -.reveal .slides > section > section[data-transition=linear].past, -.reveal .slides > section > section[data-transition~=linear-out].past, -.reveal.linear .slides > section > section:not([data-transition]).past { - -webkit-transform: translate(0, -150%); - transform: translate(0, -150%); } - -.reveal .slides > section > section[data-transition=linear].future, -.reveal .slides > section > section[data-transition~=linear-in].future, -.reveal.linear .slides > section > section:not([data-transition]).future { - -webkit-transform: translate(0, 150%); - transform: translate(0, 150%); } - -/********************************************* - * CONVEX TRANSITION - * Aliased 'default' for backwards compatibility - *********************************************/ -.reveal .slides > section[data-transition=default].past, -.reveal .slides > section[data-transition~=default-out].past, -.reveal.default .slides > section:not([data-transition]).past { - -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); - transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); } - -.reveal .slides > section[data-transition=default].future, -.reveal .slides > section[data-transition~=default-in].future, -.reveal.default .slides > section:not([data-transition]).future { - -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); - transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); } - -.reveal .slides > section > section[data-transition=default].past, -.reveal .slides > section > section[data-transition~=default-out].past, -.reveal.default .slides > section > section:not([data-transition]).past { - -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); - transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); } - -.reveal .slides > section > section[data-transition=default].future, -.reveal .slides > section > section[data-transition~=default-in].future, -.reveal.default .slides > section > section:not([data-transition]).future { - -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); - transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); } - -.reveal .slides > section[data-transition=convex].past, -.reveal .slides > section[data-transition~=convex-out].past, -.reveal.convex .slides > section:not([data-transition]).past { - -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); - transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); } - -.reveal .slides > section[data-transition=convex].future, -.reveal .slides > section[data-transition~=convex-in].future, -.reveal.convex .slides > section:not([data-transition]).future { - -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); - transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); } - -.reveal .slides > section > section[data-transition=convex].past, -.reveal .slides > section > section[data-transition~=convex-out].past, -.reveal.convex .slides > section > section:not([data-transition]).past { - -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); - transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); } - -.reveal .slides > section > section[data-transition=convex].future, -.reveal .slides > section > section[data-transition~=convex-in].future, -.reveal.convex .slides > section > section:not([data-transition]).future { - -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); - transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); } - -/********************************************* - * CONCAVE TRANSITION - *********************************************/ -.reveal .slides > section[data-transition=concave].past, -.reveal .slides > section[data-transition~=concave-out].past, -.reveal.concave .slides > section:not([data-transition]).past { - -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); - transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); } - -.reveal .slides > section[data-transition=concave].future, -.reveal .slides > section[data-transition~=concave-in].future, -.reveal.concave .slides > section:not([data-transition]).future { - -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); - transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); } - -.reveal .slides > section > section[data-transition=concave].past, -.reveal .slides > section > section[data-transition~=concave-out].past, -.reveal.concave .slides > section > section:not([data-transition]).past { - -webkit-transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0); - transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0); } - -.reveal .slides > section > section[data-transition=concave].future, -.reveal .slides > section > section[data-transition~=concave-in].future, -.reveal.concave .slides > section > section:not([data-transition]).future { - -webkit-transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0); - transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0); } - -/********************************************* - * ZOOM TRANSITION - *********************************************/ -.reveal .slides section[data-transition=zoom], -.reveal.zoom .slides section:not([data-transition]) { - -webkit-transition-timing-function: ease; - transition-timing-function: ease; } - -.reveal .slides > section[data-transition=zoom].past, -.reveal .slides > section[data-transition~=zoom-out].past, -.reveal.zoom .slides > section:not([data-transition]).past { - visibility: hidden; - -webkit-transform: scale(16); - transform: scale(16); } - -.reveal .slides > section[data-transition=zoom].future, -.reveal .slides > section[data-transition~=zoom-in].future, -.reveal.zoom .slides > section:not([data-transition]).future { - visibility: hidden; - -webkit-transform: scale(0.2); - transform: scale(0.2); } - -.reveal .slides > section > section[data-transition=zoom].past, -.reveal .slides > section > section[data-transition~=zoom-out].past, -.reveal.zoom .slides > section > section:not([data-transition]).past { - -webkit-transform: translate(0, -150%); - transform: translate(0, -150%); } - -.reveal .slides > section > section[data-transition=zoom].future, -.reveal .slides > section > section[data-transition~=zoom-in].future, -.reveal.zoom .slides > section > section:not([data-transition]).future { - -webkit-transform: translate(0, 150%); - transform: translate(0, 150%); } - -/********************************************* - * CUBE TRANSITION - *********************************************/ -.reveal.cube .slides { - -webkit-perspective: 1300px; - perspective: 1300px; } - -.reveal.cube .slides section { - padding: 30px; - min-height: 700px; - -webkit-backface-visibility: hidden; - backface-visibility: hidden; - box-sizing: border-box; } - -.reveal.center.cube .slides section { - min-height: 0; } - -.reveal.cube .slides section:not(.stack):before { - content: ''; - position: absolute; - display: block; - width: 100%; - height: 100%; - left: 0; - top: 0; - background: rgba(0, 0, 0, 0.1); - border-radius: 4px; - -webkit-transform: translateZ(-20px); - transform: translateZ(-20px); } - -.reveal.cube .slides section:not(.stack):after { - content: ''; - position: absolute; - display: block; - width: 90%; - height: 30px; - left: 5%; - bottom: 0; - background: none; - z-index: 1; - border-radius: 4px; - box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2); - -webkit-transform: translateZ(-90px) rotateX(65deg); - transform: translateZ(-90px) rotateX(65deg); } - -.reveal.cube .slides > section.stack { - padding: 0; - background: none; } - -.reveal.cube .slides > section.past { - -webkit-transform-origin: 100% 0%; - transform-origin: 100% 0%; - -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg); - transform: translate3d(-100%, 0, 0) rotateY(-90deg); } - -.reveal.cube .slides > section.future { - -webkit-transform-origin: 0% 0%; - transform-origin: 0% 0%; - -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg); - transform: translate3d(100%, 0, 0) rotateY(90deg); } - -.reveal.cube .slides > section > section.past { - -webkit-transform-origin: 0% 100%; - transform-origin: 0% 100%; - -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg); - transform: translate3d(0, -100%, 0) rotateX(90deg); } - -.reveal.cube .slides > section > section.future { - -webkit-transform-origin: 0% 0%; - transform-origin: 0% 0%; - -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg); - transform: translate3d(0, 100%, 0) rotateX(-90deg); } - -/********************************************* - * PAGE TRANSITION - *********************************************/ -.reveal.page .slides { - -webkit-perspective-origin: 0% 50%; - perspective-origin: 0% 50%; - -webkit-perspective: 3000px; - perspective: 3000px; } - -.reveal.page .slides section { - padding: 30px; - min-height: 700px; - box-sizing: border-box; } - -.reveal.page .slides section.past { - z-index: 12; } - -.reveal.page .slides section:not(.stack):before { - content: ''; - position: absolute; - display: block; - width: 100%; - height: 100%; - left: 0; - top: 0; - background: rgba(0, 0, 0, 0.1); - -webkit-transform: translateZ(-20px); - transform: translateZ(-20px); } - -.reveal.page .slides section:not(.stack):after { - content: ''; - position: absolute; - display: block; - width: 90%; - height: 30px; - left: 5%; - bottom: 0; - background: none; - z-index: 1; - border-radius: 4px; - box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2); - -webkit-transform: translateZ(-90px) rotateX(65deg); } - -.reveal.page .slides > section.stack { - padding: 0; - background: none; } - -.reveal.page .slides > section.past { - -webkit-transform-origin: 0% 0%; - transform-origin: 0% 0%; - -webkit-transform: translate3d(-40%, 0, 0) rotateY(-80deg); - transform: translate3d(-40%, 0, 0) rotateY(-80deg); } - -.reveal.page .slides > section.future { - -webkit-transform-origin: 100% 0%; - transform-origin: 100% 0%; - -webkit-transform: translate3d(0, 0, 0); - transform: translate3d(0, 0, 0); } - -.reveal.page .slides > section > section.past { - -webkit-transform-origin: 0% 0%; - transform-origin: 0% 0%; - -webkit-transform: translate3d(0, -40%, 0) rotateX(80deg); - transform: translate3d(0, -40%, 0) rotateX(80deg); } - -.reveal.page .slides > section > section.future { - -webkit-transform-origin: 0% 100%; - transform-origin: 0% 100%; - -webkit-transform: translate3d(0, 0, 0); - transform: translate3d(0, 0, 0); } - -/********************************************* - * FADE TRANSITION - *********************************************/ -.reveal .slides section[data-transition=fade], -.reveal.fade .slides section:not([data-transition]), -.reveal.fade .slides > section > section:not([data-transition]) { - -webkit-transform: none; - transform: none; - -webkit-transition: opacity 0.5s; - transition: opacity 0.5s; } - -.reveal.fade.overview .slides section, -.reveal.fade.overview .slides > section > section { - -webkit-transition: none; - transition: none; } - -/********************************************* - * NO TRANSITION - *********************************************/ -.reveal .slides section[data-transition=none], -.reveal.none .slides section:not([data-transition]) { - -webkit-transform: none; - transform: none; - -webkit-transition: none; - transition: none; } - -/********************************************* - * PAUSED MODE - *********************************************/ -.reveal .pause-overlay { - position: absolute; - top: 0; - left: 0; - width: 100%; - height: 100%; - background: black; - visibility: hidden; - opacity: 0; - z-index: 100; - -webkit-transition: all 1s ease; - transition: all 1s ease; } - -.reveal.paused .pause-overlay { - visibility: visible; - opacity: 1; } - -/********************************************* - * FALLBACK - *********************************************/ -.no-transforms { - overflow-y: auto; } - -.no-transforms .reveal .slides { - position: relative; - width: 80%; - height: auto !important; - top: 0; - left: 50%; - margin: 0; - text-align: center; } - -.no-transforms .reveal .controls, -.no-transforms .reveal .progress { - display: none !important; } - -.no-transforms .reveal .slides section { - display: block !important; - opacity: 1 !important; - position: relative !important; - height: auto; - min-height: 0; - top: 0; - left: -50%; - margin: 70px 0; - -webkit-transform: none; - transform: none; } - -.no-transforms .reveal .slides section section { - left: 0; } - -.reveal .no-transition, -.reveal .no-transition * { - -webkit-transition: none !important; - transition: none !important; } - -/********************************************* - * PER-SLIDE BACKGROUNDS - *********************************************/ -.reveal .backgrounds { - position: absolute; - width: 100%; - height: 100%; - top: 0; - left: 0; - -webkit-perspective: 600px; - perspective: 600px; } - -.reveal .slide-background { - display: none; - position: absolute; - width: 100%; - height: 100%; - opacity: 0; - visibility: hidden; - background-color: transparent; - background-position: 50% 50%; - background-repeat: no-repeat; - background-size: cover; - -webkit-transition: all 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: all 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } - -.reveal .slide-background.stack { - display: block; } - -.reveal .slide-background.present { - opacity: 1; - visibility: visible; } - -.print-pdf .reveal .slide-background { - opacity: 1 !important; - visibility: visible !important; } - -/* Video backgrounds */ -.reveal .slide-background video { - position: absolute; - width: 100%; - height: 100%; - max-width: none; - max-height: none; - top: 0; - left: 0; } - -/* Immediate transition style */ -.reveal[data-background-transition=none] > .backgrounds .slide-background, -.reveal > .backgrounds .slide-background[data-background-transition=none] { - -webkit-transition: none; - transition: none; } - -/* Slide */ -.reveal[data-background-transition=slide] > .backgrounds .slide-background, -.reveal > .backgrounds .slide-background[data-background-transition=slide] { - opacity: 1; - -webkit-backface-visibility: hidden; - backface-visibility: hidden; } - -.reveal[data-background-transition=slide] > .backgrounds .slide-background.past, -.reveal > .backgrounds .slide-background.past[data-background-transition=slide] { - -webkit-transform: translate(-100%, 0); - transform: translate(-100%, 0); } - -.reveal[data-background-transition=slide] > .backgrounds .slide-background.future, -.reveal > .backgrounds .slide-background.future[data-background-transition=slide] { - -webkit-transform: translate(100%, 0); - transform: translate(100%, 0); } - -.reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.past, -.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=slide] { - -webkit-transform: translate(0, -100%); - transform: translate(0, -100%); } - -.reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.future, -.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=slide] { - -webkit-transform: translate(0, 100%); - transform: translate(0, 100%); } - -/* Convex */ -.reveal[data-background-transition=convex] > .backgrounds .slide-background.past, -.reveal > .backgrounds .slide-background.past[data-background-transition=convex] { - opacity: 0; - -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); - transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); } - -.reveal[data-background-transition=convex] > .backgrounds .slide-background.future, -.reveal > .backgrounds .slide-background.future[data-background-transition=convex] { - opacity: 0; - -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); - transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); } - -.reveal[data-background-transition=convex] > .backgrounds .slide-background > .slide-background.past, -.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=convex] { - opacity: 0; - -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0); - transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0); } - -.reveal[data-background-transition=convex] > .backgrounds .slide-background > .slide-background.future, -.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=convex] { - opacity: 0; - -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0); - transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0); } - -/* Concave */ -.reveal[data-background-transition=concave] > .backgrounds .slide-background.past, -.reveal > .backgrounds .slide-background.past[data-background-transition=concave] { - opacity: 0; - -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); - transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); } - -.reveal[data-background-transition=concave] > .backgrounds .slide-background.future, -.reveal > .backgrounds .slide-background.future[data-background-transition=concave] { - opacity: 0; - -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); - transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); } - -.reveal[data-background-transition=concave] > .backgrounds .slide-background > .slide-background.past, -.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=concave] { - 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* reveal.js - * http://lab.hakim.se/reveal-js - * MIT licensed - * - * Copyright (C) 2016 Hakim El Hattab, http://hakim.se - */ - - -/********************************************* - * RESET STYLES - *********************************************/ - -html, body, .reveal div, .reveal span, .reveal applet, .reveal object, .reveal iframe, -.reveal h1, .reveal h2, .reveal h3, .reveal h4, .reveal h5, .reveal h6, .reveal p, .reveal blockquote, .reveal pre, -.reveal a, .reveal abbr, .reveal acronym, .reveal address, .reveal big, .reveal cite, .reveal code, -.reveal del, .reveal dfn, .reveal em, .reveal img, .reveal ins, .reveal kbd, .reveal q, .reveal s, .reveal samp, -.reveal small, .reveal strike, .reveal strong, .reveal sub, .reveal sup, .reveal tt, .reveal var, -.reveal b, .reveal u, .reveal center, -.reveal dl, .reveal dt, .reveal dd, .reveal ol, .reveal ul, .reveal li, -.reveal fieldset, .reveal form, .reveal label, .reveal legend, -.reveal table, .reveal caption, .reveal tbody, .reveal tfoot, .reveal thead, .reveal tr, .reveal th, .reveal td, -.reveal article, .reveal aside, .reveal canvas, .reveal details, .reveal embed, -.reveal figure, .reveal figcaption, .reveal footer, .reveal header, .reveal hgroup, -.reveal menu, .reveal nav, .reveal output, .reveal ruby, .reveal section, .reveal summary, -.reveal time, .reveal mark, .reveal audio, .reveal video { - margin: 0; - padding: 0; - border: 0; - font-size: 100%; - font: inherit; - vertical-align: baseline; -} - -.reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure, -.reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section { - display: block; -} - - -/********************************************* - * GLOBAL STYLES - *********************************************/ - -html, -body { - width: 100%; - height: 100%; - overflow: hidden; -} - -body { - position: relative; - line-height: 1; - - background-color: #fff; - color: #000; -} - - -/********************************************* - * VIEW FRAGMENTS - *********************************************/ - -.reveal .slides section .fragment { - opacity: 0; - visibility: hidden; - transition: all .2s ease; - - &.visible { - opacity: 1; - visibility: visible; - } -} - -.reveal .slides section .fragment.grow { - opacity: 1; - visibility: visible; - - &.visible { - transform: scale( 1.3 ); - } -} - -.reveal .slides section .fragment.shrink { - opacity: 1; - visibility: visible; - - &.visible { - transform: scale( 0.7 ); - } -} - -.reveal .slides section .fragment.zoom-in { - transform: scale( 0.1 ); - - &.visible { - transform: none; - } -} - -.reveal .slides section .fragment.fade-out { - opacity: 1; - visibility: visible; - - &.visible { - opacity: 0; - visibility: hidden; - } -} - -.reveal .slides section .fragment.semi-fade-out { - opacity: 1; - visibility: visible; - - &.visible { - opacity: 0.5; - visibility: visible; - } -} - -.reveal .slides section .fragment.strike { - opacity: 1; - visibility: visible; - - &.visible { - text-decoration: line-through; - } -} - -.reveal .slides section .fragment.fade-up { - transform: translate(0, 20%); - - &.visible { - transform: translate(0, 0); - } -} - -.reveal .slides section .fragment.fade-down { - transform: translate(0, -20%); - - &.visible { - transform: translate(0, 0); - } -} - -.reveal .slides section .fragment.fade-right { - transform: translate(-20%, 0); - - &.visible { - transform: translate(0, 0); - } -} - -.reveal .slides section .fragment.fade-left { - transform: translate(20%, 0); - - &.visible { - transform: translate(0, 0); - } -} - -.reveal .slides section .fragment.current-visible { - opacity: 0; - visibility: hidden; - - &.current-fragment { - opacity: 1; - visibility: visible; - } -} - -.reveal .slides section .fragment.highlight-red, -.reveal .slides section .fragment.highlight-current-red, -.reveal .slides section .fragment.highlight-green, -.reveal .slides section .fragment.highlight-current-green, -.reveal .slides section .fragment.highlight-blue, -.reveal .slides section .fragment.highlight-current-blue { - opacity: 1; - visibility: visible; -} - .reveal .slides section .fragment.highlight-red.visible { - color: #ff2c2d - } - .reveal .slides section .fragment.highlight-green.visible { - color: #17ff2e; - } - .reveal .slides section .fragment.highlight-blue.visible { - color: #1b91ff; - } - -.reveal .slides section .fragment.highlight-current-red.current-fragment { - color: #ff2c2d -} -.reveal .slides section .fragment.highlight-current-green.current-fragment { - color: #17ff2e; -} -.reveal .slides section .fragment.highlight-current-blue.current-fragment { - color: #1b91ff; -} - - -/********************************************* - * DEFAULT ELEMENT STYLES - *********************************************/ - -/* Fixes issue in Chrome where italic fonts did not appear when printing to PDF */ -.reveal:after { - content: ''; - font-style: italic; -} - -.reveal iframe { - z-index: 1; -} - -/** Prevents layering issues in certain browser/transition combinations */ -.reveal a { - position: relative; -} - -.reveal .stretch { - max-width: none; - max-height: none; -} - -.reveal pre.stretch code { - height: 100%; - max-height: 100%; - box-sizing: border-box; -} - - -/********************************************* - * CONTROLS - *********************************************/ - -.reveal .controls { - display: none; - position: fixed; - width: 110px; - height: 110px; - z-index: 30; - right: 10px; - bottom: 10px; - - -webkit-user-select: none; -} - -.reveal .controls button { - padding: 0; - position: absolute; - opacity: 0.05; - width: 0; - height: 0; - background-color: transparent; - border: 12px solid transparent; - transform: scale(.9999); - transition: all 0.2s ease; - -webkit-appearance: none; - -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 ); -} - -.reveal .controls .enabled { - opacity: 0.7; - cursor: pointer; -} - -.reveal .controls .enabled:active { - margin-top: 1px; -} - - .reveal .controls .navigate-left { - top: 42px; - - border-right-width: 22px; - border-right-color: #000; - } - .reveal .controls .navigate-left.fragmented { - opacity: 0.3; - } - - .reveal .controls .navigate-right { - left: 74px; - top: 42px; - - border-left-width: 22px; - border-left-color: #000; - } - .reveal .controls .navigate-right.fragmented { - opacity: 0.3; - } - - .reveal .controls .navigate-up { - left: 42px; - - border-bottom-width: 22px; - border-bottom-color: #000; - } - .reveal .controls .navigate-up.fragmented { - opacity: 0.3; - } - - .reveal .controls .navigate-down { - left: 42px; - top: 74px; - - border-top-width: 22px; - border-top-color: #000; - } - .reveal .controls .navigate-down.fragmented { - opacity: 0.3; - } - - -/********************************************* - * PROGRESS BAR - *********************************************/ - -.reveal .progress { - position: fixed; - display: none; - height: 3px; - width: 100%; - bottom: 0; - left: 0; - z-index: 10; - - background-color: rgba( 0, 0, 0, 0.2 ); -} - .reveal .progress:after { - content: ''; - display: block; - position: absolute; - height: 20px; - width: 100%; - top: -20px; - } - .reveal .progress span { - display: block; - height: 100%; - width: 0px; - - background-color: #000; - transition: width 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985); - } - -/********************************************* - * SLIDE NUMBER - *********************************************/ - -.reveal .slide-number { - position: fixed; - display: block; - right: 8px; - bottom: 8px; - z-index: 31; - font-family: Helvetica, sans-serif; - font-size: 12px; - line-height: 1; - color: #fff; - background-color: rgba( 0, 0, 0, 0.4 ); - padding: 5px; -} - -.reveal .slide-number-delimiter { - margin: 0 3px; -} - -/********************************************* - * SLIDES - *********************************************/ - -.reveal { - position: relative; - width: 100%; - height: 100%; - overflow: hidden; - touch-action: none; -} - -.reveal .slides { - position: absolute; - width: 100%; - height: 100%; - top: 0; - right: 0; - bottom: 0; - left: 0; - margin: auto; - - overflow: visible; - z-index: 1; - text-align: center; - perspective: 600px; - perspective-origin: 50% 40%; -} - -.reveal .slides>section { - -ms-perspective: 600px; -} - -.reveal .slides>section, -.reveal .slides>section>section { - display: none; - position: absolute; - width: 100%; - padding: 20px 0px; - - z-index: 10; - transform-style: preserve-3d; - transition: transform-origin 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985), - transform 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985), - visibility 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985), - opacity 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985); -} - -/* Global transition speed settings */ -.reveal[data-transition-speed="fast"] .slides section { - transition-duration: 400ms; -} -.reveal[data-transition-speed="slow"] .slides section { - transition-duration: 1200ms; -} - -/* Slide-specific transition speed overrides */ -.reveal .slides section[data-transition-speed="fast"] { - transition-duration: 400ms; -} -.reveal .slides section[data-transition-speed="slow"] { - transition-duration: 1200ms; -} - -.reveal .slides>section.stack { - padding-top: 0; - padding-bottom: 0; -} - -.reveal .slides>section.present, -.reveal .slides>section>section.present { - display: block; - z-index: 11; - opacity: 1; -} - -.reveal.center, -.reveal.center .slides, -.reveal.center .slides section { - min-height: 0 !important; -} - -/* Don't allow interaction with invisible slides */ -.reveal .slides>section.future, -.reveal .slides>section>section.future, -.reveal .slides>section.past, -.reveal .slides>section>section.past { - pointer-events: none; -} - -.reveal.overview .slides>section, -.reveal.overview .slides>section>section { - pointer-events: auto; -} - -.reveal .slides>section.past, -.reveal .slides>section.future, -.reveal .slides>section>section.past, -.reveal .slides>section>section.future { - opacity: 0; -} - - -/********************************************* - * Mixins for readability of transitions - *********************************************/ - -@mixin transition-global($style) { - .reveal .slides section[data-transition=#{$style}], - .reveal.#{$style} .slides section:not([data-transition]) { - @content; - } -} -@mixin transition-horizontal-past($style) { - .reveal .slides>section[data-transition=#{$style}].past, - .reveal .slides>section[data-transition~=#{$style}-out].past, - .reveal.#{$style} .slides>section:not([data-transition]).past { - @content; - } -} -@mixin transition-horizontal-future($style) { - .reveal .slides>section[data-transition=#{$style}].future, - .reveal .slides>section[data-transition~=#{$style}-in].future, - .reveal.#{$style} .slides>section:not([data-transition]).future { - @content; - } -} - -@mixin transition-vertical-past($style) { - .reveal .slides>section>section[data-transition=#{$style}].past, - .reveal .slides>section>section[data-transition~=#{$style}-out].past, - .reveal.#{$style} .slides>section>section:not([data-transition]).past { - @content; - } -} -@mixin transition-vertical-future($style) { - .reveal .slides>section>section[data-transition=#{$style}].future, - .reveal .slides>section>section[data-transition~=#{$style}-in].future, - .reveal.#{$style} .slides>section>section:not([data-transition]).future { - @content; - } -} - -/********************************************* - * SLIDE TRANSITION - * Aliased 'linear' for backwards compatibility - *********************************************/ - -@each $stylename in slide, linear { - .reveal.#{$stylename} section { - backface-visibility: hidden; - } - @include transition-horizontal-past(#{$stylename}) { - transform: translate(-150%, 0); - } - @include transition-horizontal-future(#{$stylename}) { - transform: translate(150%, 0); - } - @include transition-vertical-past(#{$stylename}) { - transform: translate(0, -150%); - } - @include transition-vertical-future(#{$stylename}) { - transform: translate(0, 150%); - } -} - -/********************************************* - * CONVEX TRANSITION - * Aliased 'default' for backwards compatibility - *********************************************/ - -@each $stylename in default, convex { - @include transition-horizontal-past(#{$stylename}) { - transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); - } - @include transition-horizontal-future(#{$stylename}) { - transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); - } - @include transition-vertical-past(#{$stylename}) { - transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); - } - @include transition-vertical-future(#{$stylename}) { - transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); - } -} - -/********************************************* - * CONCAVE TRANSITION - *********************************************/ - -@include transition-horizontal-past(concave) { - transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); -} -@include transition-horizontal-future(concave) { - transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); -} -@include transition-vertical-past(concave) { - transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0); -} -@include transition-vertical-future(concave) { - transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0); -} - - -/********************************************* - * ZOOM TRANSITION - *********************************************/ - -@include transition-global(zoom) { - transition-timing-function: ease; -} -@include transition-horizontal-past(zoom) { - visibility: hidden; - transform: scale(16); -} -@include transition-horizontal-future(zoom) { - visibility: hidden; - transform: scale(0.2); -} -@include transition-vertical-past(zoom) { - transform: translate(0, -150%); -} -@include transition-vertical-future(zoom) { - transform: translate(0, 150%); -} - - -/********************************************* - * CUBE TRANSITION - *********************************************/ - -.reveal.cube .slides { - perspective: 1300px; -} - -.reveal.cube .slides section { - padding: 30px; - min-height: 700px; - backface-visibility: hidden; - box-sizing: border-box; -} - .reveal.center.cube .slides section { - min-height: 0; - } - .reveal.cube .slides section:not(.stack):before { - content: ''; - position: absolute; - display: block; - width: 100%; - height: 100%; - left: 0; - top: 0; - background: rgba(0,0,0,0.1); - border-radius: 4px; - transform: translateZ( -20px ); - } - .reveal.cube .slides section:not(.stack):after { - content: ''; - position: absolute; - display: block; - width: 90%; - height: 30px; - left: 5%; - bottom: 0; - background: none; - z-index: 1; - - border-radius: 4px; - box-shadow: 0px 95px 25px rgba(0,0,0,0.2); - transform: translateZ(-90px) rotateX( 65deg ); - } - -.reveal.cube .slides>section.stack { - padding: 0; - background: none; -} - -.reveal.cube .slides>section.past { - transform-origin: 100% 0%; - transform: translate3d(-100%, 0, 0) rotateY(-90deg); -} - -.reveal.cube .slides>section.future { - transform-origin: 0% 0%; - transform: translate3d(100%, 0, 0) rotateY(90deg); -} - -.reveal.cube .slides>section>section.past { - transform-origin: 0% 100%; - transform: translate3d(0, -100%, 0) rotateX(90deg); -} - -.reveal.cube .slides>section>section.future { - transform-origin: 0% 0%; - transform: translate3d(0, 100%, 0) rotateX(-90deg); -} - - -/********************************************* - * PAGE TRANSITION - *********************************************/ - -.reveal.page .slides { - perspective-origin: 0% 50%; - perspective: 3000px; -} - -.reveal.page .slides section { - padding: 30px; - min-height: 700px; - box-sizing: border-box; -} - .reveal.page .slides section.past { - z-index: 12; - } - .reveal.page .slides section:not(.stack):before { - content: ''; - position: absolute; - display: block; - width: 100%; - height: 100%; - left: 0; - top: 0; - background: rgba(0,0,0,0.1); - transform: translateZ( -20px ); - } - .reveal.page .slides section:not(.stack):after { - content: ''; - position: absolute; - display: block; - width: 90%; - height: 30px; - left: 5%; - bottom: 0; - background: none; - z-index: 1; - - border-radius: 4px; - box-shadow: 0px 95px 25px rgba(0,0,0,0.2); - - -webkit-transform: translateZ(-90px) rotateX( 65deg ); - } - -.reveal.page .slides>section.stack { - padding: 0; - background: none; -} - -.reveal.page .slides>section.past { - transform-origin: 0% 0%; - transform: translate3d(-40%, 0, 0) rotateY(-80deg); -} - -.reveal.page .slides>section.future { - transform-origin: 100% 0%; - transform: translate3d(0, 0, 0); -} - -.reveal.page .slides>section>section.past { - transform-origin: 0% 0%; - transform: translate3d(0, -40%, 0) rotateX(80deg); -} - -.reveal.page .slides>section>section.future { - transform-origin: 0% 100%; - transform: translate3d(0, 0, 0); -} - - -/********************************************* - * FADE TRANSITION - *********************************************/ - -.reveal .slides section[data-transition=fade], -.reveal.fade .slides section:not([data-transition]), -.reveal.fade .slides>section>section:not([data-transition]) { - transform: none; - transition: opacity 0.5s; -} - - -.reveal.fade.overview .slides section, -.reveal.fade.overview .slides>section>section { - transition: none; -} - - -/********************************************* - * NO TRANSITION - *********************************************/ - -@include transition-global(none) { - transform: none; - transition: none; -} - - -/********************************************* - * PAUSED MODE - *********************************************/ - -.reveal .pause-overlay { - position: absolute; - top: 0; - left: 0; - width: 100%; - height: 100%; - background: black; - visibility: hidden; - opacity: 0; - z-index: 100; - transition: all 1s ease; -} -.reveal.paused .pause-overlay { - visibility: visible; - opacity: 1; -} - - -/********************************************* - * FALLBACK - *********************************************/ - -.no-transforms { - overflow-y: auto; -} - -.no-transforms .reveal .slides { - position: relative; - width: 80%; - height: auto !important; - top: 0; - left: 50%; - margin: 0; - text-align: center; -} - -.no-transforms .reveal .controls, -.no-transforms .reveal .progress { - display: none !important; -} - -.no-transforms .reveal .slides section { - display: block !important; - opacity: 1 !important; - position: relative !important; - height: auto; - min-height: 0; - top: 0; - left: -50%; - margin: 70px 0; - transform: none; -} - -.no-transforms .reveal .slides section section { - left: 0; -} - -.reveal .no-transition, -.reveal .no-transition * { - transition: none !important; -} - - -/********************************************* - * PER-SLIDE BACKGROUNDS - *********************************************/ - -.reveal .backgrounds { - position: absolute; - width: 100%; - height: 100%; - top: 0; - left: 0; - perspective: 600px; -} - .reveal .slide-background { - display: none; - position: absolute; - width: 100%; - height: 100%; - opacity: 0; - visibility: hidden; - - background-color: rgba( 0, 0, 0, 0 ); - background-position: 50% 50%; - background-repeat: no-repeat; - background-size: cover; - - transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985); - } - - .reveal .slide-background.stack { - display: block; - } - - .reveal .slide-background.present { - opacity: 1; - visibility: visible; - } - - .print-pdf .reveal .slide-background { - opacity: 1 !important; - visibility: visible !important; - } - -/* Video backgrounds */ -.reveal .slide-background video { - position: absolute; - width: 100%; - height: 100%; - max-width: none; - max-height: none; - top: 0; - left: 0; -} - -/* Immediate transition style */ -.reveal[data-background-transition=none]>.backgrounds .slide-background, -.reveal>.backgrounds .slide-background[data-background-transition=none] { - transition: none; -} - -/* Slide */ -.reveal[data-background-transition=slide]>.backgrounds .slide-background, -.reveal>.backgrounds .slide-background[data-background-transition=slide] { - opacity: 1; - backface-visibility: hidden; -} - .reveal[data-background-transition=slide]>.backgrounds .slide-background.past, - .reveal>.backgrounds .slide-background.past[data-background-transition=slide] { - transform: translate(-100%, 0); - } - .reveal[data-background-transition=slide]>.backgrounds .slide-background.future, - .reveal>.backgrounds .slide-background.future[data-background-transition=slide] { - transform: translate(100%, 0); - } - - .reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.past, - .reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=slide] { - transform: translate(0, -100%); - } - .reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.future, - .reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=slide] { - transform: translate(0, 100%); - } - - -/* Convex */ -.reveal[data-background-transition=convex]>.backgrounds .slide-background.past, -.reveal>.backgrounds .slide-background.past[data-background-transition=convex] { - opacity: 0; - transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); -} -.reveal[data-background-transition=convex]>.backgrounds .slide-background.future, -.reveal>.backgrounds .slide-background.future[data-background-transition=convex] { - opacity: 0; - transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); -} - -.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.past, -.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=convex] { - opacity: 0; - transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0); -} -.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.future, -.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=convex] { - opacity: 0; - transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0); -} - - -/* Concave */ -.reveal[data-background-transition=concave]>.backgrounds .slide-background.past, -.reveal>.backgrounds .slide-background.past[data-background-transition=concave] { - opacity: 0; - transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); -} -.reveal[data-background-transition=concave]>.backgrounds .slide-background.future, -.reveal>.backgrounds .slide-background.future[data-background-transition=concave] { - opacity: 0; - transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); -} - -.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.past, -.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=concave] { - opacity: 0; - transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, -100%, 0); -} -.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.future, -.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=concave] { - opacity: 0; - transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 0); -} - -/* Zoom */ -.reveal[data-background-transition=zoom]>.backgrounds .slide-background, -.reveal>.backgrounds .slide-background[data-background-transition=zoom] { - transition-timing-function: ease; -} - -.reveal[data-background-transition=zoom]>.backgrounds .slide-background.past, -.reveal>.backgrounds .slide-background.past[data-background-transition=zoom] { - opacity: 0; - visibility: hidden; - transform: scale(16); -} -.reveal[data-background-transition=zoom]>.backgrounds .slide-background.future, -.reveal>.backgrounds .slide-background.future[data-background-transition=zoom] { - opacity: 0; - visibility: hidden; - transform: scale(0.2); -} - -.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.past, -.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=zoom] { - opacity: 0; - visibility: hidden; - transform: scale(16); -} -.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.future, -.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=zoom] { - opacity: 0; - visibility: hidden; - transform: scale(0.2); -} - - -/* Global transition speed settings */ -.reveal[data-transition-speed="fast"]>.backgrounds .slide-background { - transition-duration: 400ms; -} -.reveal[data-transition-speed="slow"]>.backgrounds .slide-background { - transition-duration: 1200ms; -} - - -/********************************************* - * OVERVIEW - *********************************************/ - -.reveal.overview { - perspective-origin: 50% 50%; - perspective: 700px; - - .slides section { - height: 100%; - top: 0 !important; - opacity: 1 !important; - overflow: hidden; - visibility: visible !important; - cursor: pointer; - box-sizing: border-box; - } - .slides section:hover, - .slides section.present { - outline: 10px solid rgba(150,150,150,0.4); - outline-offset: 10px; - } - .slides section .fragment { - opacity: 1; - transition: none; - } - .slides section:after, - .slides section:before { - display: none !important; - } - .slides>section.stack { - padding: 0; - top: 0 !important; - background: none; - outline: none; - overflow: visible; - } - - .backgrounds { - perspective: inherit; - } - - .backgrounds .slide-background { - opacity: 1; - visibility: visible; - - // This can't be applied to the slide itself in Safari - outline: 10px solid rgba(150,150,150,0.1); - 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width: 600px; - margin: auto; - padding: 20px 20px 80px 20px; - text-align: center; - letter-spacing: normal; - } - - .reveal .overlay.overlay-help .viewport .viewport-inner .title { - font-size: 20px; - } - - .reveal .overlay.overlay-help .viewport .viewport-inner table { - border: 1px solid #fff; - border-collapse: collapse; - font-size: 16px; - } - - .reveal .overlay.overlay-help .viewport .viewport-inner table th, - .reveal .overlay.overlay-help .viewport .viewport-inner table td { - width: 200px; - padding: 14px; - border: 1px solid #fff; - vertical-align: middle; - } - - .reveal .overlay.overlay-help .viewport .viewport-inner table th { - padding-top: 20px; - padding-bottom: 20px; - } - - - -/********************************************* - * PLAYBACK COMPONENT - *********************************************/ - -.reveal .playback { - position: fixed; - left: 15px; - bottom: 20px; - z-index: 30; - cursor: pointer; - transition: all 400ms ease; -} - -.reveal.overview .playback { - opacity: 0; - visibility: hidden; -} - - -/********************************************* - * ROLLING LINKS - *********************************************/ - -.reveal .roll { - display: inline-block; - line-height: 1.2; - overflow: hidden; - - vertical-align: top; - perspective: 400px; - perspective-origin: 50% 50%; -} - .reveal .roll:hover { - background: none; - text-shadow: none; - } -.reveal .roll span { - display: block; - position: relative; - padding: 0 2px; - - pointer-events: none; - transition: all 400ms ease; - transform-origin: 50% 0%; - transform-style: preserve-3d; - backface-visibility: hidden; -} - .reveal .roll:hover span { - background: rgba(0,0,0,0.5); - transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg ); - } -.reveal .roll span:after { - content: attr(data-title); - - display: block; - position: absolute; - left: 0; - top: 0; - padding: 0 2px; - backface-visibility: hidden; - transform-origin: 50% 0%; - transform: translate3d( 0px, 110%, 0px ) rotateX( -90deg ); -} - - -/********************************************* - * SPEAKER NOTES - *********************************************/ - -// Hide on-page notes -.reveal aside.notes { - display: none; -} - -// An interface element that can optionally be used to show the -// speaker notes to all viewers, on top of the presentation -.reveal .speaker-notes { - display: none; - position: absolute; - width: 70%; - max-height: 15%; - left: 15%; - bottom: 26px; - padding: 10px; - z-index: 1; - font-size: 18px; - line-height: 1.4; - color: #fff; - background-color: rgba(0,0,0,0.5); - overflow: auto; - box-sizing: border-box; - text-align: left; - font-family: Helvetica, sans-serif; - -webkit-overflow-scrolling: touch; -} - -.reveal .speaker-notes.visible:not(:empty) { - display: block; -} - -@media screen and (max-width: 1024px) { - .reveal .speaker-notes { - font-size: 14px; - } -} - -@media screen and (max-width: 600px) { - .reveal .speaker-notes { - width: 90%; - left: 5%; - } -} - - -/********************************************* - * ZOOM PLUGIN - *********************************************/ - -.zoomed .reveal *, -.zoomed .reveal *:before, -.zoomed .reveal *:after { - backface-visibility: visible !important; -} - -.zoomed .reveal .progress, -.zoomed .reveal .controls { - opacity: 0; -} - -.zoomed .reveal .roll span { - background: none; -} - -.zoomed .reveal .roll span:after { - visibility: hidden; -} diff --git a/docs/css/theme/README.md b/docs/css/theme/README.md deleted file mode 100644 index 5a6c8fa..0000000 --- a/docs/css/theme/README.md +++ /dev/null @@ -1,21 +0,0 @@ -## Dependencies - -Themes are written using Sass to keep things modular and reduce the need for repeated selectors across files. Make sure that you have the reveal.js development environment including the Grunt dependencies installed before proceding: https://github.com/hakimel/reveal.js#full-setup - -## Creating a Theme - -To create your own theme, start by duplicating a ```.scss``` file in [/css/theme/source](https://github.com/hakimel/reveal.js/blob/master/css/theme/source). It will be automatically compiled by Grunt from Sass to CSS (see the [Gruntfile](https://github.com/hakimel/reveal.js/blob/master/Gruntfile.js)) when you run `grunt css-themes`. - -Each theme file does four things in the following order: - -1. **Include [/css/theme/template/mixins.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/mixins.scss)** -Shared utility functions. - -2. **Include [/css/theme/template/settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss)** -Declares a set of custom variables that the template file (step 4) expects. Can be overridden in step 3. - -3. **Override** -This is where you override the default theme. Either by specifying variables (see [settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss) for reference) or by adding any selectors and styles you please. - -4. **Include [/css/theme/template/theme.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/theme.scss)** -The template theme file which will generate final CSS output based on the currently defined variables. diff --git a/docs/css/theme/beige.css b/docs/css/theme/beige.css deleted file mode 100644 index 5bbda4b..0000000 --- a/docs/css/theme/beige.css +++ /dev/null @@ -1,291 +0,0 @@ -/** - * Beige theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #f7f2d3; - background: -moz-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%); - background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, white), color-stop(100%, #f7f2d3)); - background: -webkit-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%); - background: -o-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%); - background: -ms-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%); - background: radial-gradient(center, circle cover, white 0%, #f7f2d3 100%); - background-color: #f7f3de; } - -.reveal { - font-family: "Lato", sans-serif; - font-size: 36px; - font-weight: normal; - color: #333; } - -::selection { - color: #fff; - background: rgba(79, 64, 28, 0.99); - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #333; - font-family: "League Gothic", Impact, sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: normal; - text-transform: uppercase; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0, 0, 0, 0.1), 0 0 5px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.3), 0 3px 5px rgba(0, 0, 0, 0.2), 0 5px 10px rgba(0, 0, 0, 0.25), 0 20px 20px rgba(0, 0, 0, 0.15); } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; 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This is the opposite of the 'white' theme. - * - * By Hakim El Hattab, http://hakim.se - */ -@import url(../../lib/font/source-sans-pro/source-sans-pro.css); -section.has-light-background, section.has-light-background h1, section.has-light-background h2, section.has-light-background h3, section.has-light-background h4, section.has-light-background h5, section.has-light-background h6 { - color: #222; } - -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #222; - background-color: #222; } - -.reveal { - font-family: "Source Sans Pro", Helvetica, sans-serif; - font-size: 38px; - font-weight: normal; - color: #fff; } - -::selection { - color: #fff; - background: #bee4fd; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; 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- transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/blood.css b/docs/css/theme/blood.css deleted file mode 100644 index 6fe3d67..0000000 --- a/docs/css/theme/blood.css +++ /dev/null @@ -1,310 +0,0 @@ -/** - * Blood theme for reveal.js - * Author: Walther http://github.com/Walther - * - * Designed to be used with highlight.js theme - * "monokai_sublime.css" available from - * https://github.com/isagalaev/highlight.js/ - * - * For other themes, change $codeBackground accordingly. - * - */ -@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic); -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #222; - background-color: #222; } - -.reveal { - font-family: Ubuntu, "sans-serif"; - font-size: 36px; - font-weight: normal; - color: #eee; } - -::selection { - color: #fff; - background: #a23; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; 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} - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #a23; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #dd5566; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #6a1520; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #eee; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); 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} - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #dd5566; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #dd5566; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #a23; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } - -.reveal p { - font-weight: 300; - text-shadow: 1px 1px #222; } - -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - font-weight: 700; } - -.reveal p code { - background-color: #23241f; - display: inline-block; - border-radius: 7px; } - -.reveal small code { - vertical-align: baseline; } diff --git a/docs/css/theme/league.css b/docs/css/theme/league.css deleted file mode 100644 index 03c44ce..0000000 --- a/docs/css/theme/league.css +++ /dev/null @@ -1,293 +0,0 @@ -/** - * League theme for reveal.js. - * - * This was the default theme pre-3.0.0. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #1c1e20; - background: -moz-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%); - background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #555a5f), color-stop(100%, #1c1e20)); - background: -webkit-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%); - background: -o-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%); - background: -ms-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%); - background: radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%); - background-color: #2b2b2b; } - -.reveal { - font-family: "Lato", sans-serif; - font-size: 36px; - font-weight: normal; - color: #eee; } - -::selection { - color: #fff; - background: #FF5E99; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; 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} - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #13DAEC; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #71e9f4; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #0d99a5; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #eee; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #13DAEC; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #13DAEC; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #13DAEC; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #13DAEC; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #13DAEC; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #71e9f4; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #71e9f4; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #71e9f4; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #71e9f4; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #13DAEC; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/moon.css b/docs/css/theme/moon.css deleted file mode 100644 index 5e5d6e4..0000000 --- a/docs/css/theme/moon.css +++ /dev/null @@ -1,291 +0,0 @@ -/** - * Solarized Dark theme for reveal.js. - * Author: Achim Staebler - */ -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); -/** - * Solarized colors by Ethan Schoonover - */ -html * { - color-profile: sRGB; - rendering-intent: auto; } - -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #002b36; - background-color: #002b36; } - -.reveal { - font-family: "Lato", sans-serif; - font-size: 36px; - font-weight: normal; - color: #93a1a1; } - -::selection { - color: #fff; - background: #d33682; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #eee8d5; - font-family: "League Gothic", Impact, sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: normal; - text-transform: uppercase; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: none; } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; } - -.reveal em { - font-style: italic; } - -.reveal ol, -.reveal dl, -.reveal ul { - display: inline-block; - text-align: left; - margin: 0 0 0 1em; } - -.reveal ol { - list-style-type: decimal; } - -.reveal ul { - list-style-type: disc; } - -.reveal ul ul { - list-style-type: square; } - -.reveal ul ul ul { - list-style-type: circle; } - -.reveal ul ul, -.reveal ul ol, -.reveal ol ol, -.reveal ol ul { - display: block; - margin-left: 40px; } - -.reveal dt { - font-weight: bold; } - -.reveal dd { - margin-left: 40px; } - -.reveal q, -.reveal blockquote { - quotes: none; } - -.reveal blockquote { - display: block; - position: relative; - width: 70%; - margin: 20px auto; - padding: 5px; - font-style: italic; - background: rgba(255, 255, 255, 0.05); - box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); } - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #268bd2; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #78b9e6; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #1a6091; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #93a1a1; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #268bd2; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #268bd2; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #268bd2; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #268bd2; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #268bd2; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #78b9e6; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #78b9e6; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #78b9e6; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #78b9e6; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #268bd2; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/night.css b/docs/css/theme/night.css deleted file mode 100644 index a439cdc..0000000 --- a/docs/css/theme/night.css +++ /dev/null @@ -1,285 +0,0 @@ -/** - * Black theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ -@import url(https://fonts.googleapis.com/css?family=Montserrat:700); -@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic); -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #111; - background-color: #111; } - -.reveal { - font-family: "Open Sans", sans-serif; - font-size: 30px; - font-weight: normal; - color: #eee; } - -::selection { - color: #fff; - background: #e7ad52; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #eee; - font-family: "Montserrat", Impact, sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: -0.03em; - text-transform: none; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: none; } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; } - -.reveal em { - font-style: italic; } - -.reveal ol, -.reveal dl, -.reveal ul { - display: inline-block; - text-align: left; - margin: 0 0 0 1em; } - -.reveal ol { - list-style-type: decimal; } - -.reveal ul { - list-style-type: disc; } - -.reveal ul ul { - list-style-type: square; } - -.reveal ul ul ul { - list-style-type: circle; } - -.reveal ul ul, -.reveal ul ol, -.reveal ol ol, -.reveal ol ul { - display: block; - margin-left: 40px; } - -.reveal dt { - font-weight: bold; } - -.reveal dd { - margin-left: 40px; } - -.reveal q, -.reveal blockquote { - quotes: none; } - -.reveal blockquote { - display: block; - position: relative; - width: 70%; - margin: 20px auto; - padding: 5px; - font-style: italic; - background: rgba(255, 255, 255, 0.05); - box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); } - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #e7ad52; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #f3d7ac; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #d08a1d; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #eee; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #e7ad52; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #e7ad52; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #e7ad52; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #e7ad52; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #e7ad52; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #f3d7ac; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #f3d7ac; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #f3d7ac; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #f3d7ac; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #e7ad52; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/serif.css b/docs/css/theme/serif.css deleted file mode 100644 index 40ccb39..0000000 --- a/docs/css/theme/serif.css +++ /dev/null @@ -1,287 +0,0 @@ -/** - * A simple theme for reveal.js presentations, similar - * to the default theme. The accent color is brown. - * - * This theme is Copyright (C) 2012-2013 Owen Versteeg, http://owenversteeg.com - it is MIT licensed. - */ -.reveal a { - line-height: 1.3em; } - -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #F0F1EB; - background-color: #F0F1EB; } - -.reveal { - font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif; - font-size: 36px; - font-weight: normal; - color: #000; } - -::selection { - color: #fff; - background: #26351C; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #383D3D; - font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif; 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} - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #51483D; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #51483D; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #51483D; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #8b7c69; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #8b7c69; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #8b7c69; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #8b7c69; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #51483D; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/simple.css b/docs/css/theme/simple.css deleted file mode 100644 index b17fa5c..0000000 --- a/docs/css/theme/simple.css +++ /dev/null @@ -1,287 +0,0 @@ -/** - * A simple theme for reveal.js presentations, similar - * to the default theme. The accent color is darkblue. - * - * This theme is Copyright (C) 2012 Owen Versteeg, https://github.com/StereotypicalApps. It is MIT licensed. - * reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ -@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #fff; - background-color: #fff; } - -.reveal { - font-family: "Lato", sans-serif; - font-size: 36px; - font-weight: normal; - color: #000; } - -::selection { - color: #fff; - background: rgba(0, 0, 0, 0.99); - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #000; - font-family: "News Cycle", Impact, sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: normal; - text-transform: none; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: none; } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; } - -.reveal em { - font-style: italic; } - -.reveal ol, -.reveal dl, -.reveal ul { - display: inline-block; - text-align: left; - margin: 0 0 0 1em; } - -.reveal ol { - list-style-type: decimal; } - -.reveal ul { - list-style-type: disc; } - -.reveal ul ul { - list-style-type: square; } - -.reveal ul ul ul { - list-style-type: circle; } - -.reveal ul ul, -.reveal ul ol, -.reveal ol ol, -.reveal ol ul { - display: block; - margin-left: 40px; } - -.reveal dt { - font-weight: bold; } - -.reveal dd { - margin-left: 40px; } - -.reveal q, -.reveal blockquote { - quotes: none; } - -.reveal blockquote { - display: block; - position: relative; - width: 70%; - margin: 20px auto; - padding: 5px; - font-style: italic; - background: rgba(255, 255, 255, 0.05); - box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); } - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #00008B; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #0000f1; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #00003f; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #000; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #00008B; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #00008B; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #00008B; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #00008B; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #00008B; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #0000f1; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #0000f1; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #0000f1; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #0000f1; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #00008B; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/sky.css b/docs/css/theme/sky.css deleted file mode 100644 index 99f1cfd..0000000 --- a/docs/css/theme/sky.css +++ /dev/null @@ -1,294 +0,0 @@ -/** - * Sky theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ -@import url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic); -@import url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700); -.reveal a { - line-height: 1.3em; } - -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #add9e4; - background: -moz-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%); - background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #f7fbfc), color-stop(100%, #add9e4)); - background: -webkit-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%); - background: -o-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%); - background: -ms-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%); - background: radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%); - background-color: #f7fbfc; } - -.reveal { - font-family: "Open Sans", sans-serif; - font-size: 36px; - font-weight: normal; - color: #333; } - -::selection { - color: #fff; - background: #134674; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #333; - font-family: "Quicksand", sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: -0.08em; - text-transform: uppercase; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: none; } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; } - -.reveal em { - font-style: italic; } - -.reveal ol, -.reveal dl, -.reveal ul { - display: inline-block; - text-align: left; - margin: 0 0 0 1em; } - -.reveal ol { - list-style-type: decimal; } - -.reveal ul { - list-style-type: disc; } - -.reveal ul ul { - list-style-type: square; } - -.reveal ul ul ul { - list-style-type: circle; } - -.reveal ul ul, -.reveal ul ol, -.reveal ol ol, -.reveal ol ul { - display: block; - margin-left: 40px; } - -.reveal dt { - font-weight: bold; } - -.reveal dd { - margin-left: 40px; } - -.reveal q, -.reveal blockquote { - quotes: none; } - -.reveal blockquote { - display: block; - position: relative; - width: 70%; - margin: 20px auto; - padding: 5px; - font-style: italic; - background: rgba(255, 255, 255, 0.05); - box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); } - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #3b759e; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #74a7cb; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #264c66; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #333; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #3b759e; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #3b759e; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #3b759e; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #3b759e; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #3b759e; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #74a7cb; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #74a7cb; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #74a7cb; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #74a7cb; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #3b759e; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/solarized.css b/docs/css/theme/solarized.css deleted file mode 100644 index b4d4d4b..0000000 --- a/docs/css/theme/solarized.css +++ /dev/null @@ -1,291 +0,0 @@ -/** - * Solarized Light theme for reveal.js. - * Author: Achim Staebler - */ -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); -/** - * Solarized colors by Ethan Schoonover - */ -html * { - color-profile: sRGB; - rendering-intent: auto; } - -/********************************************* - * GLOBAL STYLES - *********************************************/ -body { - background: #fdf6e3; - background-color: #fdf6e3; } - -.reveal { - font-family: "Lato", sans-serif; - font-size: 36px; - font-weight: normal; - color: #657b83; } - -::selection { - color: #fff; - background: #d33682; - text-shadow: none; } - -.reveal .slides > section, -.reveal .slides > section > section { - line-height: 1.3; - font-weight: inherit; } - -/********************************************* - * HEADERS - *********************************************/ -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: 0 0 20px 0; - color: #586e75; - font-family: "League Gothic", Impact, sans-serif; - font-weight: normal; - line-height: 1.2; - letter-spacing: normal; - text-transform: uppercase; - text-shadow: none; - word-wrap: break-word; } - -.reveal h1 { - font-size: 3.77em; } - -.reveal h2 { - font-size: 2.11em; } - -.reveal h3 { - font-size: 1.55em; } - -.reveal h4 { - font-size: 1em; } - -.reveal h1 { - text-shadow: none; } - -/********************************************* - * OTHER - *********************************************/ -.reveal p { - margin: 20px 0; - line-height: 1.3; } - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; - max-height: 95%; } - -.reveal strong, -.reveal b { - font-weight: bold; } - -.reveal em { - font-style: italic; } - -.reveal ol, -.reveal dl, -.reveal ul { - display: inline-block; - text-align: left; - margin: 0 0 0 1em; } - -.reveal ol { - list-style-type: decimal; } - -.reveal ul { - list-style-type: disc; } - -.reveal ul ul { - list-style-type: square; } - -.reveal ul ul ul { - list-style-type: circle; } - -.reveal ul ul, -.reveal ul ol, -.reveal ol ol, -.reveal ol ul { - display: block; - margin-left: 40px; } - -.reveal dt { - font-weight: bold; } - -.reveal dd { - margin-left: 40px; } - -.reveal q, -.reveal blockquote { - quotes: none; } - -.reveal blockquote { - display: block; - position: relative; - width: 70%; - margin: 20px auto; - padding: 5px; - font-style: italic; - background: rgba(255, 255, 255, 0.05); - box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); } - -.reveal blockquote p:first-child, -.reveal blockquote p:last-child { - display: inline-block; } - -.reveal q { - font-style: italic; } - -.reveal pre { - display: block; - position: relative; - width: 90%; - margin: 20px auto; - text-align: left; - font-size: 0.55em; - font-family: monospace; - line-height: 1.2em; - word-wrap: break-word; - box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); } - -.reveal code { - font-family: monospace; } - -.reveal pre code { - display: block; - padding: 5px; - overflow: auto; - max-height: 400px; - word-wrap: normal; } - -.reveal table { - margin: auto; - border-collapse: collapse; - border-spacing: 0; } - -.reveal table th { - font-weight: bold; } - -.reveal table th, -.reveal table td { - text-align: left; - padding: 0.2em 0.5em 0.2em 0.5em; - border-bottom: 1px solid; } - -.reveal table th[align="center"], -.reveal table td[align="center"] { - text-align: center; } - -.reveal table th[align="right"], -.reveal table td[align="right"] { - text-align: right; } - -.reveal table tbody tr:last-child th, -.reveal table tbody tr:last-child td { - border-bottom: none; } - -.reveal sup { - vertical-align: super; } - -.reveal sub { - vertical-align: sub; } - -.reveal small { - display: inline-block; - font-size: 0.6em; - line-height: 1.2em; - vertical-align: top; } - -.reveal small * { - vertical-align: top; } - -/********************************************* - * LINKS - *********************************************/ -.reveal a { - color: #268bd2; - text-decoration: none; - -webkit-transition: color .15s ease; - -moz-transition: color .15s ease; - transition: color .15s ease; } - -.reveal a:hover { - color: #78b9e6; - text-shadow: none; - border: none; } - -.reveal .roll span:after { - color: #fff; - background: #1a6091; } - -/********************************************* - * IMAGES - *********************************************/ -.reveal section img { - margin: 15px 0px; - background: rgba(255, 255, 255, 0.12); - border: 4px solid #657b83; - box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); } - -.reveal section img.plain { - border: 0; - box-shadow: none; } - -.reveal a img { - -webkit-transition: all .15s linear; - -moz-transition: all .15s linear; - transition: all .15s linear; } - -.reveal a:hover img { - background: rgba(255, 255, 255, 0.2); - border-color: #268bd2; - box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); } - -/********************************************* - * NAVIGATION CONTROLS - *********************************************/ -.reveal .controls .navigate-left, -.reveal .controls .navigate-left.enabled { - border-right-color: #268bd2; } - -.reveal .controls .navigate-right, -.reveal .controls .navigate-right.enabled { - border-left-color: #268bd2; } - -.reveal .controls .navigate-up, -.reveal .controls .navigate-up.enabled { - border-bottom-color: #268bd2; } - -.reveal .controls .navigate-down, -.reveal .controls .navigate-down.enabled { - border-top-color: #268bd2; } - -.reveal .controls .navigate-left.enabled:hover { - border-right-color: #78b9e6; } - -.reveal .controls .navigate-right.enabled:hover { - border-left-color: #78b9e6; } - -.reveal .controls .navigate-up.enabled:hover { - border-bottom-color: #78b9e6; } - -.reveal .controls .navigate-down.enabled:hover { - border-top-color: #78b9e6; } - -/********************************************* - * PROGRESS BAR - *********************************************/ -.reveal .progress { - background: rgba(0, 0, 0, 0.2); } - -.reveal .progress span { - background: #268bd2; - -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); - transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/css/theme/source/beige.scss b/docs/css/theme/source/beige.scss deleted file mode 100644 index 5564f53..0000000 --- a/docs/css/theme/source/beige.scss +++ /dev/null @@ -1,39 +0,0 @@ -/** - * Beige theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); - - -// Override theme settings (see ../template/settings.scss) -$mainColor: #333; -$headingColor: #333; -$headingTextShadow: none; -$backgroundColor: #f7f3de; -$linkColor: #8b743d; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: rgba(79, 64, 28, 0.99); -$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15); - -// Background generator -@mixin bodyBackground() { - @include radial-gradient( rgba(247,242,211,1), rgba(255,255,255,1) ); -} - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/source/black.scss b/docs/css/theme/source/black.scss deleted file mode 100644 index 5f7f601..0000000 --- a/docs/css/theme/source/black.scss +++ /dev/null @@ -1,49 +0,0 @@ -/** - * Black theme for reveal.js. This is the opposite of the 'white' theme. - * - * By Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - -// Include theme-specific fonts -@import url(../../lib/font/source-sans-pro/source-sans-pro.css); - - -// Override theme settings (see ../template/settings.scss) -$backgroundColor: #222; - -$mainColor: #fff; -$headingColor: #fff; - -$mainFontSize: 38px; -$mainFont: 'Source Sans Pro', Helvetica, sans-serif; -$headingFont: 'Source Sans Pro', Helvetica, sans-serif; -$headingTextShadow: none; -$headingLetterSpacing: normal; -$headingTextTransform: uppercase; -$headingFontWeight: 600; -$linkColor: #42affa; -$linkColorHover: lighten( $linkColor, 15% ); -$selectionBackgroundColor: lighten( $linkColor, 25% ); - -$heading1Size: 2.5em; -$heading2Size: 1.6em; -$heading3Size: 1.3em; -$heading4Size: 1.0em; - -section.has-light-background { - &, h1, h2, h3, h4, h5, h6 { - color: #222; - } -} - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/source/blood.scss b/docs/css/theme/source/blood.scss deleted file mode 100644 index d22b53d..0000000 --- a/docs/css/theme/source/blood.scss +++ /dev/null @@ -1,79 +0,0 @@ -/** - * Blood theme for reveal.js - * Author: Walther http://github.com/Walther - * - * Designed to be used with highlight.js theme - * "monokai_sublime.css" available from - * https://github.com/isagalaev/highlight.js/ - * - * For other themes, change $codeBackground accordingly. - * - */ - - // Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - -// Include theme-specific fonts - -@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic); - -// Colors used in the theme -$blood: #a23; -$coal: #222; -$codeBackground: #23241f; - -$backgroundColor: $coal; - -// Main text -$mainFont: Ubuntu, 'sans-serif'; -$mainFontSize: 36px; -$mainColor: #eee; - -// Headings -$headingFont: Ubuntu, 'sans-serif'; -$headingTextShadow: 2px 2px 2px $coal; - -// h1 shadow, borrowed humbly from -// (c) Default theme by Hakim El Hattab -$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15); - -// Links -$linkColor: $blood; -$linkColorHover: lighten( $linkColor, 20% ); - -// Text selection -$selectionBackgroundColor: $blood; -$selectionColor: #fff; - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- - -// some overrides after theme template import - -.reveal p { - font-weight: 300; - text-shadow: 1px 1px $coal; -} - -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - font-weight: 700; -} - -.reveal p code { - background-color: $codeBackground; - display: inline-block; - border-radius: 7px; -} - -.reveal small code { - vertical-align: baseline; -} \ No newline at end of file diff --git a/docs/css/theme/source/league.scss b/docs/css/theme/source/league.scss deleted file mode 100644 index 46ea04a..0000000 --- a/docs/css/theme/source/league.scss +++ /dev/null @@ -1,34 +0,0 @@ -/** - * League theme for reveal.js. - * - * This was the default theme pre-3.0.0. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); - -// Override theme settings (see ../template/settings.scss) -$headingTextShadow: 0px 0px 6px rgba(0,0,0,0.2); -$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15); - -// Background generator -@mixin bodyBackground() { - @include radial-gradient( rgba(28,30,32,1), rgba(85,90,95,1) ); -} - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/source/moon.scss b/docs/css/theme/source/moon.scss deleted file mode 100644 index e47e5b5..0000000 --- a/docs/css/theme/source/moon.scss +++ /dev/null @@ -1,57 +0,0 @@ -/** - * Solarized Dark theme for reveal.js. - * Author: Achim Staebler - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); - -/** - * Solarized colors by Ethan Schoonover - */ -html * { - color-profile: sRGB; - rendering-intent: auto; -} - -// Solarized colors -$base03: #002b36; -$base02: #073642; -$base01: #586e75; -$base00: #657b83; -$base0: #839496; -$base1: #93a1a1; -$base2: #eee8d5; -$base3: #fdf6e3; -$yellow: #b58900; -$orange: #cb4b16; -$red: #dc322f; -$magenta: #d33682; -$violet: #6c71c4; -$blue: #268bd2; -$cyan: #2aa198; -$green: #859900; - -// Override theme settings (see ../template/settings.scss) -$mainColor: $base1; -$headingColor: $base2; -$headingTextShadow: none; -$backgroundColor: $base03; -$linkColor: $blue; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: $magenta; - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- diff --git a/docs/css/theme/source/night.scss b/docs/css/theme/source/night.scss deleted file mode 100644 index b0cb57f..0000000 --- a/docs/css/theme/source/night.scss +++ /dev/null @@ -1,35 +0,0 @@ -/** - * Black theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - -// Include theme-specific fonts -@import url(https://fonts.googleapis.com/css?family=Montserrat:700); -@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic); - - -// Override theme settings (see ../template/settings.scss) -$backgroundColor: #111; - -$mainFont: 'Open Sans', sans-serif; -$linkColor: #e7ad52; -$linkColorHover: lighten( $linkColor, 20% ); -$headingFont: 'Montserrat', Impact, sans-serif; -$headingTextShadow: none; -$headingLetterSpacing: -0.03em; -$headingTextTransform: none; -$selectionBackgroundColor: #e7ad52; -$mainFontSize: 30px; - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/source/serif.scss b/docs/css/theme/source/serif.scss deleted file mode 100644 index ec3fcb3..0000000 --- a/docs/css/theme/source/serif.scss +++ /dev/null @@ -1,35 +0,0 @@ -/** - * A simple theme for reveal.js presentations, similar - * to the default theme. The accent color is brown. - * - * This theme is Copyright (C) 2012-2013 Owen Versteeg, http://owenversteeg.com - it is MIT licensed. - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Override theme settings (see ../template/settings.scss) -$mainFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif; -$mainColor: #000; -$headingFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif; -$headingColor: #383D3D; -$headingTextShadow: none; -$headingTextTransform: none; -$backgroundColor: #F0F1EB; -$linkColor: #51483D; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: #26351C; - -.reveal a { - line-height: 1.3em; -} - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- diff --git a/docs/css/theme/source/simple.scss b/docs/css/theme/source/simple.scss deleted file mode 100644 index 84c7d9b..0000000 --- a/docs/css/theme/source/simple.scss +++ /dev/null @@ -1,38 +0,0 @@ -/** - * A simple theme for reveal.js presentations, similar - * to the default theme. The accent color is darkblue. - * - * This theme is Copyright (C) 2012 Owen Versteeg, https://github.com/StereotypicalApps. It is MIT licensed. - * reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); - - -// Override theme settings (see ../template/settings.scss) -$mainFont: 'Lato', sans-serif; -$mainColor: #000; -$headingFont: 'News Cycle', Impact, sans-serif; -$headingColor: #000; -$headingTextShadow: none; -$headingTextTransform: none; -$backgroundColor: #fff; -$linkColor: #00008B; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: rgba(0, 0, 0, 0.99); - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/source/sky.scss b/docs/css/theme/source/sky.scss deleted file mode 100644 index 3fee67c..0000000 --- a/docs/css/theme/source/sky.scss +++ /dev/null @@ -1,46 +0,0 @@ -/** - * Sky theme for reveal.js. - * - * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic); -@import url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700); - - -// Override theme settings (see ../template/settings.scss) -$mainFont: 'Open Sans', sans-serif; -$mainColor: #333; -$headingFont: 'Quicksand', sans-serif; -$headingColor: #333; -$headingLetterSpacing: -0.08em; -$headingTextShadow: none; -$backgroundColor: #f7fbfc; -$linkColor: #3b759e; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: #134674; - -// Fix links so they are not cut off -.reveal a { - line-height: 1.3em; -} - -// Background generator -@mixin bodyBackground() { - @include radial-gradient( #add9e4, #f7fbfc ); -} - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- diff --git a/docs/css/theme/source/solarized.scss b/docs/css/theme/source/solarized.scss deleted file mode 100644 index 912be56..0000000 --- a/docs/css/theme/source/solarized.scss +++ /dev/null @@ -1,63 +0,0 @@ -/** - * Solarized Light theme for reveal.js. - * Author: Achim Staebler - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - - -// Include theme-specific fonts -@import url(../../lib/font/league-gothic/league-gothic.css); -@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic); - - -/** - * Solarized colors by Ethan Schoonover - */ -html * { - color-profile: sRGB; - rendering-intent: auto; -} - -// Solarized colors -$base03: #002b36; -$base02: #073642; -$base01: #586e75; -$base00: #657b83; -$base0: #839496; -$base1: #93a1a1; -$base2: #eee8d5; -$base3: #fdf6e3; -$yellow: #b58900; -$orange: #cb4b16; -$red: #dc322f; -$magenta: #d33682; -$violet: #6c71c4; -$blue: #268bd2; -$cyan: #2aa198; -$green: #859900; - -// Override theme settings (see ../template/settings.scss) -$mainColor: $base00; -$headingColor: $base01; -$headingTextShadow: none; -$backgroundColor: $base3; -$linkColor: $blue; -$linkColorHover: lighten( $linkColor, 20% ); -$selectionBackgroundColor: $magenta; - -// Background generator -// @mixin bodyBackground() { -// @include radial-gradient( rgba($base3,1), rgba(lighten($base3, 20%),1) ); -// } - - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- diff --git a/docs/css/theme/source/white.scss b/docs/css/theme/source/white.scss deleted file mode 100644 index 6758ce0..0000000 --- a/docs/css/theme/source/white.scss +++ /dev/null @@ -1,49 +0,0 @@ -/** - * White theme for reveal.js. This is the opposite of the 'black' theme. - * - * By Hakim El Hattab, http://hakim.se - */ - - -// Default mixins and settings ----------------- -@import "../template/mixins"; -@import "../template/settings"; -// --------------------------------------------- - - -// Include theme-specific fonts -@import url(../../lib/font/source-sans-pro/source-sans-pro.css); - - -// Override theme settings (see ../template/settings.scss) -$backgroundColor: #fff; - -$mainColor: #222; -$headingColor: #222; - -$mainFontSize: 38px; -$mainFont: 'Source Sans Pro', Helvetica, sans-serif; -$headingFont: 'Source Sans Pro', Helvetica, sans-serif; -$headingTextShadow: none; -$headingLetterSpacing: normal; -$headingTextTransform: uppercase; -$headingFontWeight: 600; -$linkColor: #2a76dd; -$linkColorHover: lighten( $linkColor, 15% ); -$selectionBackgroundColor: lighten( $linkColor, 25% ); - -$heading1Size: 2.5em; -$heading2Size: 1.6em; -$heading3Size: 1.3em; -$heading4Size: 1.0em; - -section.has-dark-background { - &, h1, h2, h3, h4, h5, h6 { - color: #fff; - } -} - - -// Theme template ------------------------------ -@import "../template/theme"; -// --------------------------------------------- \ No newline at end of file diff --git a/docs/css/theme/template/mixins.scss b/docs/css/theme/template/mixins.scss deleted file mode 100644 index e0c5606..0000000 --- a/docs/css/theme/template/mixins.scss +++ /dev/null @@ -1,29 +0,0 @@ -@mixin vertical-gradient( $top, $bottom ) { - background: $top; - background: -moz-linear-gradient( top, $top 0%, $bottom 100% ); - background: -webkit-gradient( linear, left top, left bottom, color-stop(0%,$top), color-stop(100%,$bottom) ); - background: -webkit-linear-gradient( top, $top 0%, $bottom 100% ); - background: -o-linear-gradient( top, $top 0%, $bottom 100% ); - background: -ms-linear-gradient( top, $top 0%, $bottom 100% ); - background: linear-gradient( top, $top 0%, $bottom 100% ); -} - -@mixin horizontal-gradient( $top, $bottom ) { - background: $top; - background: -moz-linear-gradient( left, $top 0%, $bottom 100% ); - background: -webkit-gradient( linear, left top, right top, color-stop(0%,$top), color-stop(100%,$bottom) ); - background: -webkit-linear-gradient( left, $top 0%, $bottom 100% ); - background: -o-linear-gradient( left, $top 0%, $bottom 100% ); - background: -ms-linear-gradient( left, $top 0%, $bottom 100% ); - background: linear-gradient( left, $top 0%, $bottom 100% ); -} - -@mixin radial-gradient( $outer, $inner, $type: circle ) { - background: $outer; - background: -moz-radial-gradient( center, $type cover, $inner 0%, $outer 100% ); - background: -webkit-gradient( radial, center center, 0px, center center, 100%, color-stop(0%,$inner), color-stop(100%,$outer) ); - background: -webkit-radial-gradient( center, $type cover, $inner 0%, $outer 100% ); - background: -o-radial-gradient( center, $type cover, $inner 0%, $outer 100% ); - background: -ms-radial-gradient( center, $type cover, $inner 0%, $outer 100% ); - background: radial-gradient( center, $type cover, $inner 0%, $outer 100% ); -} \ No newline at end of file diff --git a/docs/css/theme/template/settings.scss b/docs/css/theme/template/settings.scss deleted file mode 100644 index ffaac23..0000000 --- a/docs/css/theme/template/settings.scss +++ /dev/null @@ -1,43 +0,0 @@ -// Base settings for all themes that can optionally be -// overridden by the super-theme - -// Background of the presentation -$backgroundColor: #2b2b2b; - -// Primary/body text -$mainFont: 'Lato', sans-serif; -$mainFontSize: 36px; -$mainColor: #eee; - -// Vertical spacing between blocks of text -$blockMargin: 20px; - -// Headings -$headingMargin: 0 0 $blockMargin 0; -$headingFont: 'League Gothic', Impact, sans-serif; -$headingColor: #eee; -$headingLineHeight: 1.2; -$headingLetterSpacing: normal; -$headingTextTransform: uppercase; -$headingTextShadow: none; -$headingFontWeight: normal; -$heading1TextShadow: $headingTextShadow; - -$heading1Size: 3.77em; -$heading2Size: 2.11em; -$heading3Size: 1.55em; -$heading4Size: 1.00em; - -// Links and actions -$linkColor: #13DAEC; -$linkColorHover: lighten( $linkColor, 20% ); - -// Text selection -$selectionBackgroundColor: #FF5E99; -$selectionColor: #fff; - -// Generates the presentation background, can be overridden -// to return a background image or gradient -@mixin bodyBackground() { - background: $backgroundColor; -} \ No newline at end of file diff --git a/docs/css/theme/template/theme.scss b/docs/css/theme/template/theme.scss deleted file mode 100644 index 101a567..0000000 --- a/docs/css/theme/template/theme.scss +++ /dev/null @@ -1,346 +0,0 @@ -// Base theme template for reveal.js - -/********************************************* - * GLOBAL STYLES - *********************************************/ - -body { - @include bodyBackground(); - background-color: $backgroundColor; -} - -.reveal { - font-family: $mainFont; - font-size: $mainFontSize; - font-weight: normal; - color: $mainColor; -} - -::selection { - color: $selectionColor; - background: $selectionBackgroundColor; - text-shadow: none; -} - -.reveal .slides>section, -.reveal .slides>section>section { - line-height: 1.3; - font-weight: inherit; -} - -/********************************************* - * HEADERS - *********************************************/ - -.reveal h1, -.reveal h2, -.reveal h3, -.reveal h4, -.reveal h5, -.reveal h6 { - margin: $headingMargin; - color: $headingColor; - - font-family: $headingFont; - font-weight: $headingFontWeight; - line-height: $headingLineHeight; - letter-spacing: $headingLetterSpacing; - - text-transform: $headingTextTransform; - text-shadow: $headingTextShadow; - - word-wrap: break-word; -} - -.reveal h1 {font-size: $heading1Size; } -.reveal h2 {font-size: $heading2Size; } -.reveal h3 {font-size: $heading3Size; } -.reveal h4 {font-size: $heading4Size; } - -.reveal h1 { - text-shadow: $heading1TextShadow; -} - - -/********************************************* - * OTHER - *********************************************/ - -.reveal p { - margin: $blockMargin 0; - line-height: 1.3; -} - -/* Ensure certain elements are never larger than the slide itself */ -.reveal img, -.reveal video, -.reveal iframe { - max-width: 95%; 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- transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); } diff --git a/docs/dsa.html b/docs/dsa.html deleted file mode 100644 index de3db5f..0000000 --- a/docs/dsa.html +++ /dev/null @@ -1,473 +0,0 @@ - - - - - - - Elgamal y DSA - - - - - - - - - - - - - - - - - - - - - - - - -
- -
- -
-

Elgamal, DSA

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
- -
-

Elgamal en combinación de firma

-

{طاهر الجمل (Taher Elgamal), 1985}

-

Basado sobre el algoritmo - DH, y es base para el - DSA y - el ECDSA -
- (Elgamal se puede combinar para implementar firma o cifrado; veremos sólo la combinación de firma que es - de la que partiremos para ver el DSA y el ECDSA) -

-

Todos estos algoritmos se basan en
los problemas - CDH y - DDH - (y estos, del DLP)

- -
- -
-

Recordemos la hipótesis DLP:

-

Dados $\mathbb{Z}_{p}^{*}$ ($p$ primo), y $\alpha$ un generador (por tanto - $\mathbb{Z}_{p}^{*}$ es cíclico)

-

$x \equiv \log_{\alpha} \beta \pmod p$

-

es computacionalmente difícil

-

$\Downarrow$

-

utilizaremos este hecho para generar las claves: -
la privada será el logaritmo (modular) de la pública -

-
- -
-

Creación de los parámetros comunes

-

Todos los usuarios pueden compartir los parámetros básicos: -
el grupo cíclico $\mathbb{Z}_{p}^{*}$ y un generador $\alpha$
-

Las mismas consideraciones de DH para - $p$ y - $\alpha$ aplican aquí

-
- -
-

Generación de claves

-

Cada usuario $\text{u}$ debe generar:

-
    -
  • $a_\text{u}$: seleccionamos un valor aleatorio $1 \leq a_\text{u} \leq p-1$
  • -
  • $y_\text{u}$: calculamos $y_\text{u} = \alpha^{a_\text{u}} \pmod p$
  • -
-

Gestión:

-
    -
  • Publicamos $y_\text{u}$ ya que nuestra clave pública será -
    la tupla $(p, \alpha, y_\text{u})$ (o simplemente $y_\text{u}$)
  • -
  • Guardamos $a_\text{u}$ ya que nuestra clave secreta será -
    la tupla $(a_\text{u}, (p, \alpha, y_\text{u}))$ (o simplemente $a_\text{u}$)
  • -
-

- Nota: comparemos el coste de generación de claves -
de Elgamal (1 random + 1 exp) con la de RSA (2 primos) -

-
- -
-

Firma

-
    -
  1. calcula el hash del mensaje $h(m)$
  2. -
  3. generamos un random $k$, tal que $1 \leq k \leq p-1$ con $\text{mcd}(k, p-1)=1$; $\,k$ debe ser privado y único
  4. -
    -
  5. $r = \alpha^k \bmod p$
  6. -
    -
  7. $s = \dfrac{h(m)-a_\text{u}r}{k} \bmod {(p-1)}\quad$ (apunte: Fermat pequeño)
  8. -
-
-

La firma de $m$ es la tupla $(r, s)$

-
- -
-

Verificación

-

A partir de la recepción del mensaje $m$ y la firma $(r,s)$

-
    -
  1. previo: calculamos el hash del mensaje $m \rightarrow h(m)$
  2. -
  3. previo: verificamos que $r$ y $s$ son válidos: $\left\{ - \begin{aligned} - 1 & \leq r \leq p-1 \\ - 1 & \leq s \leq p-1 - \end{aligned} - \right.$ -
  4. -
  5. $v_2 = \alpha^{h(m)} \bmod p$
  6. -
  7. $v_1 = (y_\text{u})^{r} r^s \bmod p$
  8. -
  9. sii $v_1$ y $v_2$ son iguales la firma es válida
  10. -
- -
-
-

Firma: - - $\begin{aligned} - r &= \alpha^k \bmod p \\ - s &= \dfrac{h(m)-a_\text{u}r}{k} \bmod {(p-1)} \\ - \end{aligned}$ -

-

Verificación: - $\begin{aligned} - v_2 &= \alpha^{h(m)} \bmod p \\ - v_1 &= (y_\text{u})^{r} r^s \bmod p - \end{aligned}\longrightarrow$ - - $\left\{ - \begin{eqnarray} - v_2 &=& \alpha^{h(m)} \bmod p \\ - &=& \alpha^{a_\text{u}r+ks \bmod{(p-1)}} \bmod p \\ - &=& \color{blue}{\alpha^{a_\text{u}r+ks} \bmod{p}} \\ - v_1 &=& (y_\text{u})^{r} r^s \bmod p \\ - &=& \alpha^{a_\text{u}r} \alpha^{ks} \bmod{p} \\ - &=& \color{blue}{\alpha^{a_\text{u}r+ks} \bmod{p}} - \end{eqnarray} - \right.$ -

-
- - -
-

Rendimiento: Elgamal vs RSA

- - - - - - - - - - - - - - - - - - - - - - - -
 GeneraciónFirmaValidación
RSAmuy lentomediorápido
Elgamalmuy rápidomediomedio
-
- -
-

debilidades $\rightarrow$ contramedidas

-
    -
  • sobre la predictibilidad del aleatorio $k$   ($r = \alpha^k \bmod p$)
  • - -
  • Ataques de tiempo $\rightarrow$ randomización en la ejecución
  • -
  • Ataques sobre el consumo, la radiación, etc.
  • -
  • compromiso de clave: acceso software o físico al sistema
  • -
  • calidad de los números aleatorios
  • -
  • a futuro: computación cuántica
  • -
  • ...
  • -
    -
-
-
-

Ataque sobre sobre $k$ conocido

-

Es fundamental mantener $k$ secreto, ya que si conocemos $k$…
- conoceremos la clave privada $a_\text{u}$, así:

-

$\begin{aligned} - s &= \dfrac{h(m)-a_\text{u}r}{k} \bmod {(p-1)} \\ - s k &= (h(m)-a_\text{u}r) \bmod {(p-1)} \\ - a_\text{u}r &= (h(m)-sk) \bmod {(p-1)} \\ - a_\text{u} &= \dfrac{h(m)-sk}{r} \bmod {(p-1)} \\ - \end{aligned}$

-
-
-

Ataque sobre el reúso de $k$

-

Es fundamental no reutilizar $k$, ya que un atacante que viera dos firmas:

-

- $s_1 = \dfrac{h(m_1)-a_\text{u}\color{red}{r}}{\color{red}{k}} \bmod {(p-1)} \text{ y } s_2 = \dfrac{h(m_2)-a_\text{u}\color{red}{r}}{\color{red}{k}} \bmod {(p-1)}$ -

-

- $\begin{aligned} - s_2 - s_1 &= \dfrac{h(m_2)-h(m_1)}{\color{red}{k}} \bmod {(p-1)} \\ - \color{red}{k} &= \dfrac{h(m_2)-h(m_1)}{s_2-s_1} \bmod {(p-1)} - \end{aligned}$ -

-

Descubriría $k$… y por tanto nuestra clave privada $a_\text{u}$ (página anterior)

-

En general los distintos $k$ no deben tener ninguna relación entre ellos (deben ser aleatorios)

-
- -
-

Longitud de clave

-

los ataques sobre Elgamal son los algoritmos para calcular el logaritmo discreto

- - - - - - - - - - - - - - - - - - - - - - - - -
$p$(bits de seguridad)
$1024$$\leftrightarrow$$80$
$2048$$\leftrightarrow$$112$
$3072$$\leftrightarrow$$128$
-
- - -
-

DSA

-

{NIST, 1991}

-

Directamente basado en
el algoritmo Elgamal en combinación de firma

-

DSA (Digital Signature Algorithm) actualmente está siendo desplazado por la variante - sobre curvas elípticas (ECDSA) -

-
- -
-

DSA vs Elgamal

-

DSA tiene una seguridad equivalente a Elgamal pero:

-
    -
  • Con mayor velocidad de proceso
  • -
  • Con un tamaño de las firmas inferior (de hecho, inferior a RSA de seguridad equivalente)
  • -
-

Estos dos hechos hacen que Elgamal no se use para firma, en favor del equivalente DSA

- -
- -
-

Elgamal $\rightarrow$ DSA: reducimos $r$ y $s$ módulo $\color{red}{q}$, donde $\color{red}{q | (p-1)}$:

-

\[\begin{eqnarray} - \text{random }k &\rightarrow& 1 \leq k \leq p-1 \\ - r &=& \alpha^k \bmod p \\ - s &=& \dfrac{h(m)-a_\text{u}r}{k} \bmod{(p-1)}\quad \\ - \end{eqnarray}\]

-

$\downarrow$

-

\[\begin{eqnarray} - &&\color{red}{q | (p-1)} \\ - \text{random }k &\rightarrow& 1 \leq k \leq \color{red}{q} \\ - r &=& (\alpha^k \bmod p) \color{red}{\bmod q} \qquad\\ - s &=& \dfrac{h(m)+a_\text{u}r}{k} \color{grey}{\bmod{(p-1)}} \color{red}{\bmod{q}}\quad - \end{eqnarray}\]

-
- -
-

Cuando veamos como dimensionar los parámetros para los diferentes - algoritmos, veremos que el tamaño recomendado en bits es: -
$\|q\| \approx \dfrac{1}{6}\|p\|$

-
- -
-

DSA

-

   Parámetros: $p$, $q$, $\alpha$

-

   Clave privada: $a$ (un número aleatorio $1 \leq a \leq q-1$) -

   Clave pública: $\alpha^a \bmod p$

- -
-

Como Elgamal, todos los usuarios pueden
compartir los parámetros básicos: -
el grupo cíclico $\mathbb{Z}_{p}^{*}$, el generador $\alpha$, y además $q$ -

Las mismas consideraciones de DH y Elgamal para - $p$ aplican aquí

-

En cambio en DSA, $\alpha$ no ha de ser generador - de $\mathbb{Z}_p^*$ -
(no debe tener $\text{ord}{(\alpha)} = \phi(p) = p -1$), -
si no que $\text{ord}{(\alpha)} = q$ y $q|(p-1)$

-
-
- -
-

Rendimiento: DSA vs RSA

- - - - - - - - - - - - - - - - - - - - - - - -
 GeneraciónFirmaValidación
RSAmuy lentomediorápido
DSAmuy rápidomediomedio
-
- -
-

debilidades $\rightarrow$ contramedidas

-

ídem Elgamal

-
- -
-

Longitud de clave

-

los ataques sobre DSA son los algoritmos para calcular el logaritmo discreto

-

el NIST - recomienda - $\|p\| \geq 2048$ bit y $\|q\| \geq 224$ hasta el 2030 - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
$p$$q$(bits de seguridad)
$1024$$160$$\leftrightarrow$$80$
$2048$$224$$\leftrightarrow$$112$
$3072$$256$$\leftrightarrow$$128$
-
- -
-

(Criptografía de Curva Elíptica) $\rightarrow$

-
-
- -
- - - - - - - - - - - - diff --git a/docs/ecbc-mac.html b/docs/ecbc-mac.html deleted file mode 100644 index 0b44afc..0000000 --- a/docs/ecbc-mac.html +++ /dev/null @@ -1,225 +0,0 @@ - - - - - - - MAC - - - - - - - - - - - - - - - - - - - - - - - - -
- -
-
-

ECBC-MAC

-

Códigos de autenticación de mensaje basados en cipfradores de bloque
- Cipher Block Chaining Message Authentication Code -

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
- - - - - - - - - -
-

MAC: primera implementación

-

podemos utilizar directamente una función de cifrado de bloque, así: -
$t = e(k, m)$

- - - - - Layer 1 - - - t - m - - -

Nota: no podemos utilizar cifrado de flujo (directamente), ya que el cálculo de $k$ sería trivial; pero sí que podemos usar AES-128-ECB

-
- -
-

MAC: primera implementación

-

$t = e(k, m)$

-

esta construcción tiene una limitación: -
sólo podemos autenticar mensajes de la longitud del bloque

-
- -
-

rawCBC-MAC

-

derivado del modo de operación CBC (Cipher Block Chaining)

-

-
(basado en Wikipedia)

-

pero en lugar de utilizar un $\text{IV}$, iniciaremos la cadena con $0$ (equivalente a $\text{IV}=0$)

-

pero rawCBC-MAC es inseguro...

-
- -
-

ECBC-MAC

-

...rawCBC-MAC es inseguro ya que un atacante puede combinar mensajes buenos para generar otros aparentemente "buenos"

-

para evitar el problema podemos cambiar el $\text{IV}=0$ por la longitud del mensaje $\text{IV}=\ell$

-
- -
-

ECBC-MAC

-

...o habitualmente lo que se hace es utilizar una segunda clave para cerrar el cálculo y impedir el - concatenado -
(ECBC: Encrypted CBC)

-

-
(basat en Wikipedia)

-
- -
-

ECBC-MAC: seguridad

-

ECBC-MAC es seguro mientras sea improbable encontrar una colisión

-

la probabilidad de colisión es cercana a $0.5$ para una cantidad de bloques generados de aproximadamente $\sqrt{|\text{bloque}|}$

-

e.g. en el caso de AES el bloque es de $128$ b, por tanto, no podremos usar la misma clave: -
$\text{ops} \ll \sqrt{2^{128}} = 2^{64}$

-

(valores aceptados para una clave AES-128/192/256: -
$2^{48}$ mensajes autenticados)

-
- -
-

Otros MACs usados

-

Poly1305-AES: longitud $\|t\| = 128 \text{b}$

-

Poly1305-ChaCha20: longitud $\|t\| = 128 \text{b}$

-
- -
-

cifrar y autenticar

-

estas dos funciones se utilizan juntas frecuentemente

-

enviaremos la concatenación $(c, t)$ donde:
- $\begin{aligned} - c &= e(k_e, m) \\ - t &= \text{MAC}(k_t, c) - \end{aligned}$

-

Nota: hacer $t = \text{MAC}(k_t, \color{red}{m})$ no garantiza que la función MAC no revele - ningún de detalle de $m$ (en realidad sí lo hace: si dos mensajes son iguales, un atacante lo sabrá simplemente inspeccionando $t$ y $t'$

-
- -
-

AEAD

-

Authenticated Encryption with Associated Data

-
- -
-

cifrar y autenticar en un sólo paso

-

(Authenticated Encryption o AEAD)

-

Históricamente ha habido errores concatenando el cifrado y la firma

-

Con los algoritmos AEAD se trata de ofrecer primitivas combinadas que dan - confidencialidad, integridad y autenticidad en un único algoritmo simétrico

-

Adicionalmente, la implementación combinada permite mayor rendimiento

-
    -
  • CCM ó Counter with CBC-MAC, es la combinación de AES-CTR con un CBC-MAC: con una misma clave, se calcula el MAC sobre los datos en claro, y después se cifra esos mismos datos en claro.
  • -
  • ChaCha20/Poly1305 combina ambos algoritmos
  • -
  • GCM ó Galois Counter Mode, también una combinación de AES-CTR pero ahora con una multiplicación modular sobre los datos cifrados que se usan como MAC; permite velocidades superiores a CCM
  • -
-
- - -
-

(Teoría de números) $\rightarrow$

-
-
- -
- - - - - - - - - - - - diff --git a/docs/ecc.html b/docs/ecc.html deleted file mode 100644 index 7d788bc..0000000 --- a/docs/ecc.html +++ /dev/null @@ -1,512 +0,0 @@ - - - - - - - ECC - - - - - - - - - - - - - - - - - - - - - - - - -
- -
- -
-

Criptografía de -
Curva Elíptica

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-

$n=24$

-
- -
-

Curva Elíptica: longitud de clave

-

la dificultad de ejecutar el logaritmo de una clave pública $n$ es
- $O(\sqrt{2^{\text{longitud}_n}})$, por tanto el nivel de seguridad en bits - es la mitad

-

el NIST - recomienda - $\|n\| \geq 224$ bit hasta el 2030 - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
ECDH $n$ / ECDSA $n$DSA $p$; $q$DH $n$ / RSA $n$(bits de seguridad)
$224$$2048$; $224$$2048$$\leftrightarrow$$112$
$256$$3072$; $256$$3072$$\leftrightarrow$$128$
$512$n/d$15360$$\leftrightarrow$$256$
-

ECDSA y ECDH sustituye DSA y DH respectivamente ya que son más eficientes - y aguantarán mejor el paso del tiempo (hay implementaciones con $\|n\| = 512$ pero - nadie está usando DSA, DH o RSA con longitudes de clave equivalentes (según el NIST) de $15360$ b)

-
- -
-

Cripto de Curva Elíptica

-
    -
  1. se busca un primo $p$ de tamaño apropiado: $\mathbb{F}_p$ (similar a $\mathbb{Z}_p^*$)
  2. -
  3. se seleccionan los “puntos” que cumplen con la ecuación de una curva elíptica $E(\mathbb{F}_p)$
  4. -
  5. se "cuentan" los puntos de la curva ($|E(\mathbb{F}_p)|$) y se verifica que (también) es un número primo
  6. -
  7. sobre estos "puntos bidimensionales" se definen dos operaciones: -

    - $\begin{aligned} - "+" &\rightarrow P+Q \\ - "+ \text{repetida}" &\rightarrow P+P+P+\cdots+P \color{gray}{= i P} - \end{aligned}$ -

    -
  8. -
-
- -
-

ECDLP: EC Discrete Logarithm Problem

-

encontrar $i$ a partir de

-

$R=i A$

-

conociendo $R$ y $A$

-

es un problema de complejidad exponencial

- -

por ejemplo ECDH

-

$i(\color{red}{jA}) = j(\color{red}{iA}) = ijA \leftarrow$ (secreto acordado)

- -

es equivalente a DH

-

${(\color{red}{\alpha^{i}})}^j = {(\color{red}{\alpha^{j}})}^i = \alpha^{ij}\leftarrow$ (secreto acordado)

-
-

utilizaremos mayúsculas para definir puntos y distingirlos de los enteros -
$A$ es $\alpha$ mayúscula, el punto generador

- -

-
- -
-

4. Suma de puntos (y suma-repetida)

-

enfoque geométrico; ojo: $P\in E(\mathbb{R})$ no $E(\mathbb{F}_p)$

- - - (fuente: Jan R. Sandbakken / GeoGebra) - -
- -
-

2. Cripto de Curva elíptica

- -

una curva elíptica $E$ es:

-

$y^2 = x^3+ax+b$

- -

una curva elíptica $E(\mathbb{F}_p)$ es:

-

$y^2 \equiv x^3+ax+b \pmod p$

- -

y para que no tinga singularidades hace falta escoger $a,b \in \mathbb{F}_p$ para que - $4a^3+27b^2 \not\equiv 0 \pmod p$

- -

las curvas elípticas tienen las propiedades necesarias para que la operación $+$ esté bien definida - $\forall P = (x,y) \in E(\mathbb{F}_p)$

-
- -
-

4. Suma: $R=P+Q$

-

$\begin{aligned} - x_R &= \left(\frac{y_Q-y_P}{x_Q-x_P}\right)^2 - x_P - x_Q \\ - y_R &= \left(\frac{y_Q-y_P}{x_Q-x_P}\right)(x_P-x_R) - y_P \\ - \end{aligned}$

- -
- -
-

4. Suma repetida: $R = 2P$

-

$\begin{aligned} - x_R &= \left(\frac{3 x_P^2+a}{2 y_p}\right)^2 - 2x_P \\ - y_R &= \left(\frac{3 x_P^2+a}{2 y_p}\right)(x_P-x_R)- y_P \\ - \end{aligned}$

- -
- -
-

4.$\rightarrow$1. Suma de puntos (algunos detalles)

-

entonces: para hacer la suma (y suma repetida) de puntos sobre $E(\mathbb{F}_p)$... -
necesitamos suma, resta, multiplicación y división sobre $\mathbb{F}_p$ -
$\mathbb{F}_p = \{0,1,2,\dotsc,p-1\}$ -

-

no hay bastante con el $\mathbb{Z}_p^*$ ya que la resta sobre $\mathbb{F}_p$ - puede generar valores $P=(0,-)$ -

$P-P = \mathcal{O}$: si nos fijamos en el gráfico, sumar $P$ a $-P$ tiende - a $(-,\infty)$ $\Rightarrow$ -
$\mathcal{O}$ es la identidad (o desde el punto de vista gráfico es el - “punto en el inifinito”) -

-

...

-
- -
-

1. Cuerpo finito $\mathbb{F}_p$

-

…este tipo de conjuntos con estas operaciones definidas -
se denominan cuerpos finitos

-

en resumen, sobre $\mathbb{F}_p$ tenemos que:

-
    -
  • las dos funciones $+$ y $\times$ definidas
  • -
  • tiene el elemento nulo (sobre $+$)
  • -
  • tiene el elemento identidad (sobre $\times$)
  • -
  • así como la inversa definida (y única) para todos los elementos no nulos
  • -
- - -

recordemos que para DH o DSA usábamos un - grupo (finito) sobre la multiplicación - ($\mathbb{Z}_p^*$) -

-
-
- - -
-

3.   $|E(\mathbb{F}_p)|$

-

Hace falta que la cantidad de elementos de $E(\mathbb{F}_p)$ ($|E(\mathbb{F}_p)|$) tenga un factor (primo) grande

-

el teorema de Hasse dice que $|E(\mathbb{F}_p)|$ tiene como factor -
$n=p+1\pm 2\sqrt{p}$, por tanto

- -

-

entonces $E(\mathbb{F}_p)$ es o bien cíclico o bien tiene algún generador con un orden* - grande ($n$)

-

escogemos uno de estos puntos como generador $A$:

-

$n = \text{ord}(A) \; \Rightarrow \; nA=\mathcal{O}$

-

-

- Nota: en DH (no EC) sería equivalente a: -
$\alpha^n \equiv 1 \pmod p$ -

- -
- -
-

Ejemplo

-

con parámetros reducidos

-

(ejemplo de [Johnson, Menezes, Vanstone])

-
- -
-

Ejemplo con parámetros reducidos

-

usaremos $p=23 \Rightarrow \mathbb{F}_{23} = \{0,1,2,\dotsc,21,22\}$

-

y $a=1$ y $b=4 \Rightarrow y^2 \equiv x^3+x+4 \pmod{23}$

-

entonces $E(\mathbb{F}_{23})$:

-

$\begin{matrix} - \mathcal{O} & (0, 2) & (0,21) & (1, 11) & (1,12) & (4, 7) \\ - (4,16) & (7, 3) & (7,20) & (8,8) & (8,15) & (9,11) \\ - (9,12) & (10, 5) & (10,18) & (11,9) & (11,14) & (13,11) \\ - (13,12) & (14,5) & (14,18) & (15,6) & (15,17) & (17,9) \\ - (17,14) & (18,9) & (18,14) & (22,5) & (22,18) - \end{matrix}$

-

y el tamaño es $|E(\mathbb{F}_{23})| = 29$ (el tamaño de $|E(\mathbb{F}_{p})| \approx p$)

-
- -
-

$E(\mathbb{F}_{23}); y^2=x^3+x+4$

-

- - - - Layer 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

-
- -
-

$E(\mathbb{F}_{23});\; y^2=x^3+x+4$

-

$\begin{matrix} - \mathcal{O} & (0,2) & (0,21) & (1, 11) & (1,12) & (4,7) \\ - (4,16) & (7, 3) & (7,20) & (8,8) & (8,15) & (9,11) \\ - (9,12) & (10, 5) & (10,18) & (11,9) & (11,14) & (13,11) \\ - (13,12) & (14,5) & (14,18) & (15,6) & (15,17) & (17,9) \\ - (17,14) & (18,9) & (18,14) & (22,5) & (22,18) - \end{matrix}$

-

$E(\mathbb{F}_{23});\; y^2=x^3+x+4;\;$ generador $A = (0,2);\; 29A=\mathcal{O}$

-

$\begin{matrix} - 1A=(0,2) & 2A=(13,12) & 3A=(11,9) & 4A=(1,12) \\ - 5A=(7,20) & 6A=(9,11) & 7A=(15,6) & 8A=(14,5) \\ - 9A=(4,7) & \dotsc & & \\ - 25A=(1,11) & 26A=(11,14) & 27A=(13,11) & 28A=(0,21) \\ - 29A=\mathcal{O} - \end{matrix}$

-
- - -
-

Curvas estándar

-
- -
-

NIST P-256

-

$y^3 \equiv x^2 + ax + b \pmod p$

-

$\begin{aligned} - p =& 2^{256} - 2^{224} + 2^{192} + 2^{96} - 1 = \\ - & 115792089210356248762697446949407573530086143415290314195533631308867097853951\\ - a =& -3 \\ - b =& 41058363725152142129326129780047268409114441015993725554835256314039467401291 \\ - A =& (\\ - & \mathtt{0x6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296}\\ - & , \\ - & \mathtt{0x4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5}\\ - & ) \\ - \text{ord}(A) =& n = 115792089210356248762697446949407573529996955224135760342422259061068512044369 - \end{aligned}$ -

-

(font: NIST)

- -
- -
-

Prestaciones en Thales nShield Connect 6000+

- - - - - - - - - - - - - - - - - - - - - - - - -
AlgoritmoGeneración (TPS)Firma (TPS)
RSA-20483000
NIST P-2568402400
NIST P-5214801300
-
- -
-

DSA $\rightarrow $ ECDSA:

-

\[\begin{eqnarray} - &&\color{red}{q | (p-1)} \\ - \text{random }k &\rightarrow& 0 < k < \color{red}{q} \\ - r &=& (\alpha^k \bmod p) \color{red}{\bmod q} \qquad\\ - s &=& \dfrac{h(m)+a_\text{u}r}{k} \color{red}{\bmod{q}}\quad - \end{eqnarray}\]

-

$\downarrow$

-

\[\begin{eqnarray} - \text{random }k &\rightarrow& 0 < k < \text{ord}(A) \\ - r &=& kA \bmod \text{ord}(A) \\ - s &=& \dfrac{h(m)-a_\text{u}r}{k} \bmod \text{ord}(A) \\ - \end{eqnarray}\]

-
- -
-

(Complejidad) $\rightarrow$

-
-
- -
- - - - - - - - - - - - diff --git a/docs/gimp/bio-c.png b/docs/gimp/bio-c.png deleted file mode 100644 index 7607fe3..0000000 Binary files a/docs/gimp/bio-c.png and /dev/null differ diff --git a/docs/gimp/bio-c2.png b/docs/gimp/bio-c2.png deleted file mode 100644 index 4769c3f..0000000 Binary files a/docs/gimp/bio-c2.png and /dev/null differ diff --git a/docs/gimp/bio-c3.png b/docs/gimp/bio-c3.png deleted file mode 100644 index 2a9f40b..0000000 Binary files a/docs/gimp/bio-c3.png and /dev/null differ diff --git a/docs/gimp/bio-k.png b/docs/gimp/bio-k.png deleted file mode 100644 index 3c77b02..0000000 Binary files a/docs/gimp/bio-k.png and /dev/null differ diff --git a/docs/gimp/bio-k2.png b/docs/gimp/bio-k2.png deleted file mode 100644 index 65da9d4..0000000 Binary files a/docs/gimp/bio-k2.png and /dev/null differ diff --git a/docs/gimp/bio-k3.png b/docs/gimp/bio-k3.png deleted file mode 100644 index c90028f..0000000 Binary files a/docs/gimp/bio-k3.png and /dev/null differ diff --git a/docs/gimp/bio-k4.png b/docs/gimp/bio-k4.png deleted file mode 100644 index 1ddc563..0000000 Binary files a/docs/gimp/bio-k4.png and /dev/null differ diff --git a/docs/gimp/bio-m.png b/docs/gimp/bio-m.png deleted file mode 100644 index e164efb..0000000 Binary files a/docs/gimp/bio-m.png and /dev/null differ diff --git a/docs/gimp/biocrypt.xcf b/docs/gimp/biocrypt.xcf deleted file mode 100644 index 9b87eaf..0000000 Binary files a/docs/gimp/biocrypt.xcf and /dev/null differ diff --git a/docs/gimp/biocrypt2.xcf b/docs/gimp/biocrypt2.xcf deleted file mode 100644 index 6e4beeb..0000000 Binary files a/docs/gimp/biocrypt2.xcf and /dev/null differ diff --git a/docs/gimp/hola-xor.png b/docs/gimp/hola-xor.png deleted file mode 100644 index e5aafeb..0000000 Binary files a/docs/gimp/hola-xor.png and /dev/null differ diff --git a/docs/gimp/hola-xor.xcf b/docs/gimp/hola-xor.xcf deleted file mode 100644 index 5da5e20..0000000 Binary files a/docs/gimp/hola-xor.xcf and /dev/null differ diff --git a/docs/hash.html b/docs/hash.html deleted file mode 100644 index 57d1b96..0000000 --- a/docs/hash.html +++ /dev/null @@ -1,376 +0,0 @@ - - - - - - - Hash - - - - - - - - - - - - - - - - - - - - - - - - -
- -
- -
-

Funciones
de hash

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
- -
-

Función de hash: objetivos

-

resume una cadena de longitud arbitraria $m$,
a un valor de tamaño fijo $r$ (el resumen):

-

$r = h(m)$

-

adicionalmente, hace falta que la función dé resumenes diferentes para mensajes diferentes...

-
- -
-

Colisiones

-

...es imposible garantizar que una función genere valores diferentes para mensajes diferentes ya que - el espacio de resumenes es muy inferior al espacio de mensajes: -
$\|r\| \ll \|m\|$

-

por ejemplo si: -
- $\left. - \begin{aligned} - \|r\| & = 256\text{b} \Rightarrow |r| = 2^{256}\text{b} \\ - \|m\| & \approx 10^6\text{B} \Rightarrow |m| = 2^{2^{23}}\text{b} - \end{aligned} - \right\} \frac{|m|}{|r|} = \frac{2^{2^{23}}}{2^{256}} = 2^{2^{23}-256} \approx 2^{8·10^6}$ -

-
- -
-

Función de hash: objetivos

-

aunque cada resumen $r$ es compartido por una gran cantidad de mensajes (colisiones) - una función de hash segura hace que sea infactible encontrar dichas duplicidades

- -

dado un mensaje $m$ con un resumen $r = h(m)$ encontrar un mensaje con el mismo resumen - $m$ la manera más eficiente tiene que ser generar mensajes hasta encontrar otro con el mismo resumen $r$

-

e.g. si el resumen es de $\|r\| = 256$ entonces deberemos realizar $2^{256}$ operaciones de hash hasta - encontrar una igual

-
-
- -
-
-

Paradoja del cumpleaños

-

(Birthday paradox)

-

hay un ataque mejor que el anterior de fuerza bruta, que deriva de -
la paradoja del cumpleaños:

-

“si tenemos un grupo de 23 personas, la probabilidad de tener un par con la misma fecha de cumpleaños - es del 50%”

-

sólo hace falta que el grupo llegue a 70 personas para que la probabilidad sea del 99%

-

en general, $p=0.5$ si la cantidad de experimentos es $x \approx 1,25 \sqrt{\text{elementos}}$

-
-
-

La probabilidad de que dos personas no tengan el mismo aniversario es:

-

$p=\frac{364}{365} = 99'7\%$

-

La probabilidad de que tres personas no tengan el mismo aniversario es:

-

$p=\frac{364}{365} \frac{363}{365} = 99'2\%$

-

La probabilidad de que cuatro personas no tengan el mismo aniversario es:

-

$p=\frac{364}{365} \frac{363}{365} \frac{362}{365} = 98'4\%$

-

$\vdots$

-

La probabilidad de que 23 personas no tengan el mismo aniversario es:

-

$p=\frac{364}{365} \cdots \frac{365-22}{365} = 49'3\%$

-

(es decir, es más probable que sí haya dos personas con el mismo aniversario en un conjunto de 23, que qué no)

-
-
- -
-

Ataque del cumpleaños

-

(Birthday attack)

-

si tenemos un hash de tamaño $\|r\|$ la probabilidad de colisión será muy alta a medida que nos acercamos - a las $\sqrt{|r|}$ operaciones

-

e.g para $\|r\| = 256\text{ b}$ esto son unas $\sqrt{2^{256}} = 2^\frac{256}{2} = 2^{128}$ operaciones

-

esto implica que para un hash hacen falta resúmenes el doble de largos de lo que hacía falta para las - claves para obtener el mismo nivel de seguridad

-

la security strength de una función de hash de longitud $b$ bits es $b/2$

-
- -
-

ejemplos

-

los hashes recomendados en la actualidad son el SHA-2 y el SHA-3

-
    -
  • SHA-2: longitudes de $256$ b y $512$ b (con variantes truncadas de $224$ b y $384$ b)
  • -
  • SHA-3: longitudes entre $224$ b a $512$ b
  • -
-

longitudes aproximadamente el doble que las longitudes de claves que las claves de AES ($128$ b, $192$ b, $256$ b) - para una seguridad equivalente

-
- -
-

¿SHA-2 ó SHA-3?

-

los primeros están diseñados por la NSA, y los segundos escogidos por el NIST después de organizar una - competición para definir el siguiente hash a utilizar

-

el SHA-3 se ha desarrollado teniendo en cuenta la eficiencia y como backup en caso de encontrar vulnerabilidades - en el SHA-2 (diseños totalmente diferentes)

-

el SHA-2 hasta ahora ha sido sometido a un trabajo de
- análisis muy superior al SHA-3

-
- -
-

Protocolos basados en hash

-
- -
-

seguridad en conjuntos de mensajes

-

hace falta vigilar que la seguridad con la que protegemos los mensajes individuales, debe extrapolarse a - secuencias de mensajes (la sesión)

-

si no hacemos nada más que lo comentado hasta ahora, seríamos vulnerables a ataques:

-
    -
  • de réplica (replay attacks)
  • -
  • de reordenado
  • -
  • de eliminado
  • -
-
- -
-

Protocolos: Sesión

- -

por ejemplo, añadiendo un identificador de secuencia -
$\{1\|\text{more}\|m_1, 2\|\text{more}\|m_2, \dots, n\|\text{last}\|m_n\}$

- -

cada mensaje debe ir protegido por hash, HMAC o firma, cifrado, etc.

-
- -
-

Protocolos: Merkle Hash tree

-

permite firmar bases de datos, discos, de forma eficiente

- -
- -
-

Protocolos: almacenamiento de contraseñas

-

el sistema operativo no debe guardar las contraseñas de los usuarios, -
no hace falta.

-

podemos guardar simplemente su hash: $\text{hash}(\text{contraseña})$

-

pero esto tiene un problema: muchos usuarios usan palabras, nombres, etc. limitados. Las palabras, nombres conocidos són del orden de $\approx 100.000$

-

un atacante realizar un "diccionario" con el hash de todas las palabras, nombres, etc. (ataque de diccionario)

-
- -
-

Contramedidas ataque de diccionario

-

añadir un valor aleatorio o salt y lo guardamos: -
$\text{salt} \| \text{hash}(\text{salt} \| \text{contraseña})$

-

esto fuerza al atacante a calcular el diccionario para cada contraseña

-

pero sigue siendo factible realizar $\approx 100.000$ operaciones para encontrar una contraseña

-

contramedida adicional: realizar iteraciones -
implementar un hash "costoso": -
$\text{hash}(\text{hash}(\text{hash}(\cdots \text{hash}(\text{salt} \| \text{contraseña}))))$ -

-
- -
-
-

Protocolos: BitCoin (Blockchain)

-

Desafío (aka "minería"): resumen "escogiendo" un hash "costoso"

-

$\begin{aligned} - \text{SHA2-256}(\text{bloque}) = - & 00000000000000000000000000000000 \\ - & 00000000000000000000000000000000 \\ - & 00000001\dots \text{ y 185 bits más} - \end{aligned}$

-

para poder escoger el hash, se debe añadir una secuencia de bits adecuada a la estructura a firmar (el bloque de transacciones de los últimos minutos):

-

$\text{hash}(\text{prefijo_adecuado} \| \text{bloque})$

-

Nota: este hash (la "minería") se realiza sobre el libro de transacciones de bitcoin (ledger)

- (el titular del dinero se conoce porque se asocia la transacción con criptografía asimétrica)

-
-
-
-

Addenda

-

el "ledger" BlockChain (y otros como NameCoin, Ethereum…) se está usando también como notaría:

-

en el libro de transacciones, a parte de transacciones, se pueden inscribir datos que quedan públicos (el ledger es público) para posterior consulta

-
-
- -
-

PRNG basado en hash

-

también (como con cifradores de bloque) se puede generar una función PRNG basada en hash:

-
    -
  • Hash DRBG
  • -
  • HMAC DRBG
  • -
- -
- -
-

HMAC

-

Hash-based Message Authentication Code

-
- -
-

MAC: objetivo

-

MAC es la implementación de la firma símetrica

-

impide que un atacante pueda modificar el mensaje
sin que el receptor lo detecte
-

-
- - -
-

MAC: funcionamiento

-

nos hará falta una clave secreta que aplicaremos al mensaje con la función $\text{MAC}$:

-

$t = \text{MAC}(k, m)$

- - - - - Layer 1 - - - t - m - - -
- -
-

(Nota sobre el cifrado)

-

sólo usando un algoritmo de cifrado, un atacante puede modificar el mensaje, aunque no lo pueda leer -
(incluso hay algoritmos que le permiten realizar operaciones:
e.g. $\oplus$ en cifrado de flujo) -

-

esta funcionalidad es ortogonal con el cifrado: -
cifrado y MAC se utilizan combinadas para obtener
confidencialidad y integridad -

-
- -
-

SHA2-HMAC: primer intento

-

$t = h(k \| m)$

-

concatenamos una clave $k$ (o simplemente una contraseña de longitud suficiente) al propio mensaje

-

Nota: esta implementación es insegura [9.64][9.65]

-
- -
-

SHA2-HMAC

-

el HMAC que se utiliza habitualmente utiliza como cifrado
- el propio hash y $\oplus$

-

- $\begin{aligned} - k_1 = k \oplus \text{opad} \\ - k_2 = k \oplus \text{ipad} \\ - \end{aligned}$

-

$t = \color{red}{h}( k_1 \, \| \, \color{red}{h}( k_2 \| m ) )$

-

Donde:

-

$\begin{aligned} - \text{opad} &= \text{5C5C}\cdots \\ - \text{ipad} &= \text{3636}\cdots - \end{aligned}$ -

- -
- -
-

(ECBC-MAC) $\rightarrow$

- -
-
- -
- - - - - - - - - - - - diff --git a/docs/hsm.html b/docs/hsm.html deleted file mode 100644 index 3551f89..0000000 --- a/docs/hsm.html +++ /dev/null @@ -1,517 +0,0 @@ - - - - - - - HSM - - - - - - - - - - - - - - - - - - - - - - - - -
- -
- -
-

Generación de Números Aleatorios -
y HSM

- Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
- - - - - -
-

RNG

-

o TRNG (True Random Number Generation)

-
- -
-

RNG

-

La generación de números aleatorios (RNG) no se puede implementar con un algoritmo, a diferencia de PRNG que precisamente eran algoritmos con un parámetro o semilla que les permitía generar secuencias impredecibles
(impredecibles a condición de que no se conozca la semilla)

-
- -
-

RNG: generación

-

¿Cómo implementamos un RNG si no es algorítmico?

-
    -
  • Recopilando eventos de entrada (I/O) y acumulando sus parámetros (habitualmente las cifras menos significativas de la hora en ns ó μs)
  • -
  • Mediante dispositivos especializados (HSM*)

    -


    -

    *) HSM: Hardware Secure Module

    -
- - -
-

RNG: fuentes

-

UI ($\ll 1$ kbps después de reducción)

-

latencia disco duro ($\ll 1$ kbps después de reducción)

-

red ($\approx 1$ kbps después de reducción)

-

funciones de procesador (Intel: $\gg$ Mbps)

-
-
-

RNG: distribución uniforme

-

Los RNG deben tener unas propiedades

-

estas propiedades no aplican al número generado (o el bit) en sí, si no a las secuencias de números generados

-

la secuencia de números (o de bits) debe tener una distribución uniforme

-
-
-

RNG: distribución uniforme

-

para $n$ bits generados, la probabilidad de una secuencia dada es la misma de la de cualquier otra ($2^{-n}$)

-

ningún algoritmo puede predecir el seguiente bit conocidos los anteriores (y además, la probabilidad de acierto debe ser $p \approx 1/2$)

-
-
-

RNG: validación

-

para secuencias suficientemente largas el número de '$1$'s y '$0$'s tiende a ser el mismo

-

para secuencias suficientemente largas el número de grupos ${00, 01, 10, 11}$ tiende a ser el mismo

-

etc.

-

estos tipos de test permiten saber que mi fuente no tiene problemas obvios, pero no es suficiente contra un - atacante capaz de modificar conveniente el sistema RNG

-
-
-

RNG: ¿validación?

-

un RNG sólo se puede considerar seguro si sabemos como lo generamos, y lo generamos de forma segura

-
- -
-

RNG: vulnerabilidades

-

Wikipedia: Random number generator atack

-

Cloud: random... con poca entropía por poca I/O

-

Debian (Ubuntu): random... con poca entropía por errores de código

-

Intel: random... implementación cerrada - (...)

-

PlayStation 3: random... - constante

-
- -
-

RNG: vulnerabilidades

-

la criptografía es segura siempre que las hipótesis de funcionamiento se cumplan

-

la aleatoriedad suficiente de la fuente RNG (o PRNG) es una de ellas

-

-
(de xkcd.com/221)

-
- -
-

RNG ó PRNG

-

¿para generar claves hemos de utilizar PRNG o RNG?

- -

podemos usar PRNG a condición que:

-
    -
  1. el PRNG se alimente de una semilla RNG
  2. -
  3. que el PRNG sea de calidad criptográfica (hacer servir un - AES-CTR - cifrando una secuencia constante es una buena opción) -
  4. -
  5. que la semilla tenga suficiente entropía para cubrir el nivel de seguridad - requerido (i.e. $128$ b de entropía para claves de seguridad $128$ b equivalente - como AES-128 ó RSA-3072)
  6. -
  7. y que se mantengan las hipótesis de seguridad: no reutilizar bajo ningún concepto una secuencia de bits - (ja sea RNG ó PRNG) y que las fuentes físicas RNG tengan una entropía bien estimada y acondicionada, - y que los generadoros PRNG sean de buena calidad y cubran un espacio de posibilidades suficiente (i.e. - hace falta usar AES-256-CTR si queremos generar claves con $256$ b de seguridad con una única - secuencia)
  8. -
-
-
- -
-

dispositivos
ad-hoc para
RNG

-

(usados en HSM, SmartCards, algunas CPUs, etc.)

-
- -
-

RNG: ruido térmico

-

-

una resistencia a temperatura ambiente, tiene electrones libres que se mueven aleatoriamente (carga negativa) - y podemos medir el desequilibrio momentáneo con un conversor Analógico/Digital

-

el conversor dará una secuencia indefinida de bits aleatorios

-
- -
-

RNG: ruido térmico

-

el ruido térmico es el resultado de un fenómeno caótico (no estrictamente aleatorio)

-

(…)

-
- -
-

RNG: indeterminación cuántica

-

-

con una fuente (tenue) apuntamos a un espejo semireflectante; dos fotodetectores detectan uno u otro el fotón - de forma totalment aleatoria

-
- -
-

generador random cuántico

-

-
(d'idquantique.com)

-
- -
-

¿RNG?

-

las dos familias de dispositivos generan números aleatorios… pero no uniformes

-
    -
  • RNG térmico: limitado por el ancho de banda (señal)
  • -
  • RNG cuántico: limitado por la precisión del espejo (semireflectancia del 50,000…%)
  • -
-
- -
-

Reducción/acondicionado

-

el flujo en crudo se debe processar siempre, típicamente:

-
    -
  • se descartan las secuencias de '1' y de '0' y sólo se genera un bit random en los cambios
  • -

    -
    esto reduce los bps per "uniformiza" la secuencia -

    -
  • se aplica una PRF/PRP sobre el flujo anterior (e.g. las CPU's Intel cifran la secuencia con AES-128 y la clav 0x00..00)
  • -
-
- -
-

RNG en Linux

-

en Linux (Ubuntu) tenemos dos fuentes random:

-
    -
  • /dev/random: salida RNG basada en I/O ($\approx$ bps)
  • -
  • /dev/urandom: unblocking random, salida PRNG enriquecida con /dev/random; ($\approx$ Mbps)
  • -
-

en otros Linux tenemos diferentes combinaciones de /dev/random y con aleatoriedad obtenida de diferentes fuentes

-
- - - - - -
-

HSM

-

(Hardware Secure Module)

-
- -
-

HSM

-

(Hardware Secure Module)

-

las funciones de un HSM son:

-
    -
  • generar claves "de calidad"
  • -
  • custodiarlas de forma segura
  • -
  • protegerlas contra uso ilegítimo
  • -
  • asegurar su correcto uso
  • -
  • secundarias:
      -
    • velocidad (TPS, aceleración TLS)
    • -
    • volumen (cantidad de claves)
    • -
    • portabilidad (movilidad física)
    • -
    • clave compartida (N/M); backup compartido (N/M)
    • -
    -
  • -
-
- -
-

Ejemplos: portabilidad

-

- -
(fuente - DGP) - -

-
- -
-

Ejemplos: portabilidad

- -
- -
-

Ejemplos: servidores

- -
- -
-

Ejemplos: servicio en red

- -
- -
-

Ejemplos: servicio en red

- -
- -
-

subsistemas

-

para implementar las funciones anteriores hace falta:

-
    -
  • generador de claves aleatories (RNG)
  • -
  • uso controlado verificable -
      -
    • protección física (no se puede leer el sistema de ficheros, o modificar el software - sin "estropear" el HSM)
    • -
    • protección software (API con control de acceso)
    • -
    -
  • -
  • área de ataque mínima (API "minimalista", hace más improbable los bugs o los security flaws)
  • -
-
- -
- -
- -
-

FIPS 140-2

-

los HSM pueden ser certificados según - FIPS 140-2 -
en diferentes niveles: -

-

este estándar define los requisitos de seguredad que deben seguir los HSM (certificados):

-

- The security requirements cover areas related to the secure design and implementation of a - cryptographic module. These areas include cryptographic module specification; cryptographic module - ports and interfaces; roles, services, and authentication; finite state model; physical security; - operational environment; cryptographic key management; electromagnetic interference/electromagnetic - compatibility (EMI/EMC); self-tests; design assurance; and mitigation of other attacks. -

-
-
-

FIPS 140-2

-
    -
  • FIPS 140-2 nivel 1: sin contramedidas físicas (son librerías); análisis lógico y de algoritmos
  • -
  • FIPS 140-2 nivel 2: nivel 1, y debe disponer de contramedidas pasivas para detectar el acceso físico (sellos, evidencias)
  • -
  • FIPS 140-2 nivel 3: nivel 2, y debe disponer de contramedidas activas para contrarrestar el acceso físico (ceroización) - y sólo permite exportar las claves cifradas
  • -
  • FIPS 140-2 nivel 4: nivel 3, y debe disponer de validación formal del funcionamento
  • -
-
- -
-

FIPS 140-2

-

para gestionar claves de usuarios para firma avanzada habitualmente se
requiere FIPS 140-2 nivel 2

-

para autoridades de validación o de sello de tiempo, habitualmente se
requiere FIPS 140-2 nivel 2

-

para autoridades de certificación habitualmente se
require FIPS 140-2 nivel 3

-
- -
-

PKCS #11

-

PKCS #11 - es una especificación de la API de los HSM en lenguaje C (literalmente un .h)

-


-

PKCS: Public Key Cryptographic Standard. Estándares de facto publicados por RSA Labs. Inc. (ahora EMC2 (ahora Dell Technologies)); -
actualmente la gestión del estándar ha pasado a - OASIS -

-
- -
-

PKCS #11: operaciones

-
    -
  • login, gestión de sesión
  • -
  • generación de claves simétricas/asimétricas
  • -
  • cifrado/descifrado simétrica
  • -
  • firma/verificación simétrica
  • -
  • descifrado/firma asimétrica
  • -
  • operaciones para acuerdo de claves (TLS)
  • -
  • RNG
  • -
  • des/ensobrado de claves (key un/wrap)
  • -
  • gestión de objetos
  • -
-
- - - -
-

Partición de Secretos

-

en claves importantes (e.g. la de una CA raíz) un HSM puede no ser suficiente (¿y si lo roban?)

-

en estos casos podemos dividir la clave en trozos:

- -
- -
-

Partición de secretos

-

¿lo podemos hacer "por software"?

- -

sí, pero el secreto ha estado "en claro" en la RAM del ordenador por tanto una vez recuperado - el secreto su exposición ha aumentado notablemente

-

pero en HSM es una propiedad habitual

-
-
- -
-

$\oplus$ (XOR) entre los trozos de clave

-

$n$ custodios se reparten la clave = $\{0,1\}^{\|n\|}$

-
-

partición${}_1$ = secuencia aleatoria de $n$ bits

-

partición${}_2$ = secuencia aleatoria de $n$ bits

-

-

partición${}_{n-1}$ = secuencia aleatoria de $n$ bits

-

partición${}_n$ = partición${}_1 \oplus \cdots \oplus$ partición${}_{n-1} \oplus$ clave

-
-

Es incondicionalmente seguro (criptográficamente hablando) pero "muy inseguro" desde el punto de vista de robustez funcional:
si se pierde un trozo/partición se pierde la clave sin remedio

-
- -
-

Algoritmo de Shamir

-

-
permite dividir el secreto en $M$ trozos, de los cuales nos hacen falta $N$ para recuperarlos

-
- -
-

Algoritmo de Shamir

-

definido sobre $(x \in \mathbb{Z}_{p}^{*}, y \in \mathbb{Z}_{p}^{*})$ (no sobre $(x \in \mathbb{R}, y \in \mathbb{R})$ como en el dibujo anterior)

-

si en lugar de utilizar una recta (polinomio de grado $1$), - usamos un polinomio de grado $M-1$ podemos ajustar cuantos trozos - se deben recuperar ($M$)

-

podemos dividirlo en tantos trozos ($N$) como haga falta ($N | N \geq M$)

-
-
-

Algoritmo de Shamir

-
    -
  • es robusto: mientras tengamos $M$ fragmentos (de los $N$ totales), podemos recuperar el secreto
  • -
  • es seguro: hace falta robar/extorsionar/presionar/… $M$ participantes para obtener el secreto
  • -
  • es seguro: sobre $\mathbb{Z}_p^*$ - es incondicionalmente segura
  • -
  • es seguro: a condición que se cumpla la hipótesis que el HSM es impenetrable
  • -
-
- -
-

(TLS) $\rightarrow$

-
-
- -
- - - - - - - - - - - - diff --git a/docs/img/AES-AddRoundKey.svg b/docs/img/AES-AddRoundKey.svg deleted file mode 100644 index e0020c0..0000000 --- a/docs/img/AES-AddRoundKey.svg +++ /dev/null @@ -1,1290 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - 2,1 - 1,2 - 1,1 - - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - 0,0 - 0,1 - 0,2 - 0,3 - 1,0 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - 3,1 - 3,2 - 3,3 - - - - - - - - - - - - - - - - - - k - k - k - k - k - k - k - k - k - k - 2,1 - k - - k - k - k - k - k - 0,0 - 0,1 - 0,2 - 0,3 - 1,0 - 1,1 - 1,2 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - 3,1 - 3,2 - 3,3 - - - - - - - - - - - - - - - - - b - 2,1 - 1,2 - - b - b - b - b - b - b - b - b - b - b - b - b - b - b - b - 0,0 - 0,1 - 0,2 - 0,3 - 1,0 - 1,1 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - 3,1 - 3,2 - 3,3 - - - AddRoundKey - - - - - - - - - - diff --git a/docs/img/AES-MixColumns.svg b/docs/img/AES-MixColumns.svg deleted file mode 100644 index 17d561d..0000000 --- a/docs/img/AES-MixColumns.svg +++ /dev/null @@ -1,1026 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1,2 - a - a - a - a - a - - 1,1 - a - - a - a - - 2,1 - a - - a - a - a - a - a - 0,0 - - a - 0,1 - - 0,2 - 0,3 - 1,0 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - - a - 3,1 - - 3,2 - 3,3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - b - 1,2 - b - b - b - b - b - b - - - b - - 2,1 - b - - b - b - b - b - 0,0 - - b - 0,1 - - 0,2 - 0,3 - 1,0 - - b - 1,1 - - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - - b - 3,1 - - 3,2 - 3,3 - - - MixColumns - - - - - - - - diff --git a/docs/img/AES-ShiftRows.svg b/docs/img/AES-ShiftRows.svg deleted file mode 100644 index 9efeda1..0000000 --- a/docs/img/AES-ShiftRows.svg +++ /dev/null @@ -1,916 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ShiftRows - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - No - change - Shift 1 - Shift 2 - Shift 3 - - - - - - - - - - 0,0 - 0,1 - 0,2 - 0,3 - 1,0 - 1,1 - 1,2 - 1,3 - 1,1 - 1,2 - 1,3 - 1,0 - 0,0 - 0,1 - 0,2 - 0,3 - 2,0 - 2,1 - 2,2 - 2,3 - 2,0 - 2,1 - 2,2 - 2,3 - 3,0 - 3,1 - 3,2 - 3,3 - 3,0 - 3,1 - 3,2 - 3,3 - - diff --git a/docs/img/AES-SubBytes.svg b/docs/img/AES-SubBytes.svg deleted file mode 100644 index 2dfb063..0000000 --- a/docs/img/AES-SubBytes.svg +++ /dev/null @@ -1,1012 +0,0 @@ - - - - - - - image/svg+xml - - - - - - - - - - - - - - - - - - - - - - - - - - 1,2 - a - a - a - a - a - - 1,1 - a - - a - a - - 2,1 - a - - - - - - a - a - a - a - a - 0,0 - - a - 0,1 - - 0,2 - 0,3 - 1,0 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - - a - 3,1 - - 3,2 - 3,3 - - - - - - - - - - - - - - - - - b - 2,1 - 1,2 - b - b - b - b - b - b - b - b - b - b - - - - - b - b - b - b - b - 0,0 - 0,1 - 0,2 - 0,3 - 1,0 - 1,1 - 1,3 - 2,0 - 2,2 - 2,3 - 3,0 - 3,1 - 3,2 - 3,3 - - - SubBytes - - - S - - diff --git a/docs/img/AdES comparison.png b/docs/img/AdES comparison.png deleted file mode 100644 index 694b34f..0000000 Binary files a/docs/img/AdES comparison.png and /dev/null differ diff --git a/docs/img/CBC-MAC_(encrypt_last_block)_structure.svg b/docs/img/CBC-MAC_(encrypt_last_block)_structure.svg deleted file mode 100644 index 0b2baae..0000000 --- a/docs/img/CBC-MAC_(encrypt_last_block)_structure.svg +++ /dev/null @@ -1,580 +0,0 @@ - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - E - - k1 - k1 - k1 - k2 - - - - - - - - - - diff --git a/docs/img/CBC-MAC_structure_(editat).svg b/docs/img/CBC-MAC_structure_(editat).svg deleted file mode 100644 index 948b9a7..0000000 --- a/docs/img/CBC-MAC_structure_(editat).svg +++ /dev/null @@ -1,111 +0,0 @@ - - - - - - - - - - - - image/svg+xml - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - -L \ No newline at end of file diff --git a/docs/img/CBC-MAC_structure_(en).svg b/docs/img/CBC-MAC_structure_(en).svg deleted file mode 100644 index bba7d13..0000000 --- a/docs/img/CBC-MAC_structure_(en).svg +++ /dev/null @@ -1,107 +0,0 @@ - - image/svg+xml - - Layer 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E - - - - - - - - - - - - - - - - 0 - - diff --git a/docs/img/CBC_encryption.svg b/docs/img/CBC_encryption.svg deleted file mode 100644 index d9734a9..0000000 --- a/docs/img/CBC_encryption.svg +++ /dev/null @@ -1,1113 +0,0 @@ - - - - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - Cipher Block Chaining (CBC) mode encryption - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - Plaintext - - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - Plaintext - - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - Plaintext - - - - - - - - - - - - - - - - - - - - Initialization Vector (IV) - - - - - diff --git a/docs/img/CTR_encryption.svg b/docs/img/CTR_encryption.svg deleted file mode 100644 index af2abd0..0000000 --- a/docs/img/CTR_encryption.svg +++ /dev/null @@ -1,1388 +0,0 @@ - - - - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - Counter (CTR) mode encryption - - block cipherencryption - - - - - - - - - - - - - - - - - - - Noncec59bcf35… - Counter00000000 - - Key - Plaintext - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Ciphertext - - - - - - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - - Noncec59bcf35… - Counter00000001 - - Key - Plaintext - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Ciphertext - - - - - - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - - Noncec59bcf35… - Counter00000002 - - Key - Plaintext - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Ciphertext - - - - - - - - - - diff --git a/docs/img/ECB_encryption.svg b/docs/img/ECB_encryption.svg deleted file mode 100644 index c02810f..0000000 --- a/docs/img/ECB_encryption.svg +++ /dev/null @@ -1,907 +0,0 @@ - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - Electronic Codebook (ECB) mode encryption - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - Plaintext - Plaintext - Plaintext - - diff --git a/docs/img/Hash_Tree.svg b/docs/img/Hash_Tree.svg deleted file mode 100644 index 6ec7326..0000000 --- a/docs/img/Hash_Tree.svg +++ /dev/null @@ -1,827 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - - DataBlocks - - - - - - - Hash1 - - Hash 1-0+Hash 1-1 - hash( ) - - - - - - - - Hash0 - - Hash 0-0+Hash 0-1 - hash( ) - - - - - - - - - - Hash 0+Hash 1 - hash( ) - - Top Hash - - - - - - - - Hash0-0 - hash(L1) - - - - - - - Hash0-1 - hash(L2) - - - - - - - Hash1-0 - hash(L3) - - - - - - - Hash1-1 - hash(L4) - - - - - - - - - L1 - - - - - - - L2 - - - - - - - L3 - - - - - - - L4 - - - - - - - - - - - - - - diff --git a/docs/img/OFB_encryption.svg b/docs/img/OFB_encryption.svg deleted file mode 100644 index 1d97d9f..0000000 --- a/docs/img/OFB_encryption.svg +++ /dev/null @@ -1,1111 +0,0 @@ - - - - - - - - - - - - - - - - - - - image/svg+xml - - - - - - - Output Feedback (OFB) mode encryption - - block cipherencryption - - - - - - - - - - - - - - - - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - Initialization Vector (IV) - - - - - - - block cipherencryption - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - block cipherencryption - - - Key - - - - - - - - - - - - - - - - Ciphertext - - - - - - - - - - - - - - - - - - Plaintext - - - - - - - - - - - - - - - - Plaintext - - - - - - - - - - - - - - - - - Plaintext - - - - - - - - - - - - - diff --git a/docs/img/Tux.jpg b/docs/img/Tux.jpg deleted file mode 100644 index ac314ad..0000000 Binary files a/docs/img/Tux.jpg and /dev/null differ diff --git a/docs/img/Tux_ecb.jpg b/docs/img/Tux_ecb.jpg deleted file mode 100644 index cac8f5c..0000000 Binary files a/docs/img/Tux_ecb.jpg and /dev/null differ diff --git a/docs/img/ca-unica.png b/docs/img/ca-unica.png deleted file mode 100644 index a9fbe73..0000000 Binary files a/docs/img/ca-unica.png and /dev/null differ diff --git a/docs/img/condicionatrng.png b/docs/img/condicionatrng.png deleted file mode 100644 index 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- -
-
-

Introducción a la Criptografía

- - Creative Commons License
- - - “Curso de Introducción a la Criptografía” - - - by Jordi Íñigo Griera is licensed under a
- - Creative Commons Attribution 4.0 International License. - -
Project hosted at github.com/jig/crypto
-
-
-

Introducción a la Criptografía (i/iii)

- -
-
-

Introducción a la Criptografía (ii/iii)

- -
-
-

Introducción a la Criptografía (iii/iii)

-
    - . . . - -
  • Protocolos
  • -
      -
    • Conexiones (TLS)
    • -
    • Infraestructura de Clave Pública (PKI)
    • - -
    -
-
-
-

Enlaces: Bibliografía

- -

-

Enlaces: implementación

-
    -
  • Implementación de referencia: - OpenSSL -
  • -
-
-
-

Enlaces: Uso, Vulnerabilidades

- -

-

Enlaces: Rendimiento

- -
-
-

Enlaces: Cursos

-
    -
  • (Crypto) Universidad de Maryland; Jonathan Katz
  • -
  • (Crypto I, - Crypto II) Universidad de Standford; Dan Boneh
  • -
-
-
-

(Objetivos) $\rightarrow$

- -
-
-
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This list contains the combined state of - // all current slides. - state = [], - - // The current scale of the presentation (see width/height config) - scale = 1, - - // CSS transform that is currently applied to the slides container, - // split into two groups - slidesTransform = { layout: '', overview: '' }, - - // Cached references to DOM elements - dom = {}, - - // Features supported by the browser, see #checkCapabilities() - features = {}, - - // Client is a mobile device, see #checkCapabilities() - isMobileDevice, - - // Client is a desktop Chrome, see #checkCapabilities() - isChrome, - - // Throttles mouse wheel navigation - lastMouseWheelStep = 0, - - // Delays updates to the URL due to a Chrome thumbnailer bug - writeURLTimeout = 0, - - // Flags if the interaction event listeners are bound - eventsAreBound = false, - - // The current auto-slide duration - autoSlide = 0, - - // Auto slide properties - autoSlidePlayer, - autoSlideTimeout = 0, - autoSlideStartTime = -1, - autoSlidePaused = false, - - // Holds information about the currently ongoing touch input - touch = { - startX: 0, - startY: 0, - startSpan: 0, - startCount: 0, - captured: false, - threshold: 40 - }, - - // Holds information about the keyboard shortcuts - keyboardShortcuts = { - 'N , SPACE': 'Next slide', - 'P': 'Previous slide', - '← , H': 'Navigate left', - '→ , L': 'Navigate right', - '↑ , K': 'Navigate up', - '↓ , J': 'Navigate down', - 'Home': 'First slide', - 'End': 'Last slide', - 'B , .': 'Pause', - 'F': 'Fullscreen', - 'ESC, O': 'Slide overview' - }; - - /** - * Starts up the presentation if the client is capable. - */ - function initialize( options ) { - - checkCapabilities(); - - if( !features.transforms2d && !features.transforms3d ) { - document.body.setAttribute( 'class', 'no-transforms' ); - - // Since JS won't be running any further, we load all lazy - // loading elements upfront - var images = toArray( document.getElementsByTagName( 'img' ) ), - iframes = toArray( document.getElementsByTagName( 'iframe' ) ); - - var lazyLoadable = images.concat( iframes ); - - for( var i = 0, len = lazyLoadable.length; i < len; i++ ) { - var element = lazyLoadable[i]; - if( element.getAttribute( 'data-src' ) ) { - element.setAttribute( 'src', element.getAttribute( 'data-src' ) ); - element.removeAttribute( 'data-src' ); - } - } - - // If the browser doesn't support core features we won't be - // using JavaScript to control the presentation - return; - } - - // Cache references to key DOM elements - dom.wrapper = document.querySelector( '.reveal' ); - dom.slides = document.querySelector( '.reveal .slides' ); - - // Force a layout when the whole page, incl fonts, has loaded - window.addEventListener( 'load', layout, false ); - - var query = Reveal.getQueryHash(); - - // Do not accept new dependencies via query config to avoid - // the potential of malicious script injection - if( typeof query['dependencies'] !== 'undefined' ) delete query['dependencies']; - - // Copy options over to our config object - extend( config, options ); - extend( config, query ); - - // Hide the address bar in mobile browsers - hideAddressBar(); - - // Loads the dependencies and continues to #start() once done - load(); - - } - - /** - * Inspect the client to see what it's capable of, this - * should only happens once per runtime. - */ - function checkCapabilities() { - - isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( UA ); - isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA ); - - var testElement = document.createElement( 'div' ); - - features.transforms3d = 'WebkitPerspective' in testElement.style || - 'MozPerspective' in testElement.style || - 'msPerspective' in testElement.style || - 'OPerspective' in testElement.style || - 'perspective' in testElement.style; - - features.transforms2d = 'WebkitTransform' in testElement.style || - 'MozTransform' in testElement.style || - 'msTransform' in testElement.style || - 'OTransform' in testElement.style || - 'transform' in testElement.style; - - features.requestAnimationFrameMethod = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame; - features.requestAnimationFrame = typeof features.requestAnimationFrameMethod === 'function'; - - features.canvas = !!document.createElement( 'canvas' ).getContext; - - // Transitions in the overview are disabled in desktop and - // Safari due to lag - features.overviewTransitions = !/Version\/[\d\.]+.*Safari/.test( UA ); - - // Flags if we should use zoom instead of transform to scale - // up slides. Zoom produces crisper results but has a lot of - // xbrowser quirks so we only use it in whitelsited browsers. - features.zoom = 'zoom' in testElement.style && !isMobileDevice && - ( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) ); - - } - - /** - * Loads the dependencies of reveal.js. Dependencies are - * defined via the configuration option 'dependencies' - * and will be loaded prior to starting/binding reveal.js. - * Some dependencies may have an 'async' flag, if so they - * will load after reveal.js has been started up. - */ - function load() { - - var scripts = [], - scriptsAsync = [], - scriptsToPreload = 0; - - // Called once synchronous scripts finish loading - function proceed() { - if( scriptsAsync.length ) { - // Load asynchronous scripts - head.js.apply( null, scriptsAsync ); - } - - start(); - } - - function loadScript( s ) { - head.ready( s.src.match( /([\w\d_\-]*)\.?js$|[^\\\/]*$/i )[0], function() { - // Extension may contain callback functions - if( typeof s.callback === 'function' ) { - s.callback.apply( this ); - } - - if( --scriptsToPreload === 0 ) { - proceed(); - } - }); - } - - for( var i = 0, len = config.dependencies.length; i < len; i++ ) { - var s = config.dependencies[i]; - - // Load if there's no condition or the condition is truthy - if( !s.condition || s.condition() ) { - if( s.async ) { - scriptsAsync.push( s.src ); - } - else { - scripts.push( s.src ); - } - - loadScript( s ); - } - } - - if( scripts.length ) { - scriptsToPreload = scripts.length; - - // Load synchronous scripts - head.js.apply( null, scripts ); - } - else { - proceed(); - } - - } - - /** - * Starts up reveal.js by binding input events and navigating - * to the current URL deeplink if there is one. - */ - function start() { - - // Make sure we've got all the DOM elements we need - setupDOM(); - - // Listen to messages posted to this window - setupPostMessage(); - - // Prevent the slides from being scrolled out of view - setupScrollPrevention(); - - // Resets all vertical slides so that only the first is visible - resetVerticalSlides(); - - // Updates the presentation to match the current configuration values - configure(); - - // Read the initial hash - readURL(); - - // Update all backgrounds - updateBackground( true ); - - // Notify listeners that the presentation is ready but use a 1ms - // timeout to ensure it's not fired synchronously after #initialize() - setTimeout( function() { - // Enable transitions now that we're loaded - dom.slides.classList.remove( 'no-transition' ); - - loaded = true; - - dispatchEvent( 'ready', { - 'indexh': indexh, - 'indexv': indexv, - 'currentSlide': currentSlide - } ); - }, 1 ); - - // Special setup and config is required when printing to PDF - if( isPrintingPDF() ) { - removeEventListeners(); - - // The document needs to have loaded for the PDF layout - // measurements to be accurate - if( document.readyState === 'complete' ) { - setupPDF(); - } - else { - window.addEventListener( 'load', setupPDF ); - } - } - - } - - /** - * Finds and stores references to DOM elements which are - * required by the presentation. If a required element is - * not found, it is created. - */ - function setupDOM() { - - // Prevent transitions while we're loading - dom.slides.classList.add( 'no-transition' ); - - // Background element - dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null ); - - // Progress bar - dom.progress = createSingletonNode( dom.wrapper, 'div', 'progress', '' ); - dom.progressbar = dom.progress.querySelector( 'span' ); - - // Arrow controls - createSingletonNode( dom.wrapper, 'aside', 'controls', - '' + - '' + - '' + - '' ); - - // Slide number - dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 'slide-number', '' ); - - // Element containing notes that are visible to the audience - dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null ); - dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' ); - - // Overlay graphic which is displayed during the paused mode - createSingletonNode( dom.wrapper, 'div', 'pause-overlay', null ); - - // Cache references to elements - dom.controls = document.querySelector( '.reveal .controls' ); - dom.theme = document.querySelector( '#theme' ); - - dom.wrapper.setAttribute( 'role', 'application' ); - - // There can be multiple instances of controls throughout the page - dom.controlsLeft = toArray( document.querySelectorAll( '.navigate-left' ) ); - dom.controlsRight = toArray( document.querySelectorAll( '.navigate-right' ) ); - dom.controlsUp = toArray( document.querySelectorAll( '.navigate-up' ) ); - dom.controlsDown = toArray( document.querySelectorAll( '.navigate-down' ) ); - dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) ); - dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) ); - - dom.statusDiv = createStatusDiv(); - } - - /** - * Creates a hidden div with role aria-live to announce the - * current slide content. Hide the div off-screen to make it - * available only to Assistive Technologies. - */ - function createStatusDiv() { - - var statusDiv = document.getElementById( 'aria-status-div' ); - if( !statusDiv ) { - statusDiv = document.createElement( 'div' ); - statusDiv.style.position = 'absolute'; - statusDiv.style.height = '1px'; - statusDiv.style.width = '1px'; - statusDiv.style.overflow ='hidden'; - statusDiv.style.clip = 'rect( 1px, 1px, 1px, 1px )'; - statusDiv.setAttribute( 'id', 'aria-status-div' ); - statusDiv.setAttribute( 'aria-live', 'polite' ); - statusDiv.setAttribute( 'aria-atomic','true' ); - dom.wrapper.appendChild( statusDiv ); - } - return statusDiv; - - } - - /** - * Configures the presentation for printing to a static - * PDF. - */ - function setupPDF() { - - var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight ); - - // Dimensions of the PDF pages - var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ), - pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) ); - - // Dimensions of slides within the pages - var slideWidth = slideSize.width, - slideHeight = slideSize.height; - - // Let the browser know what page size we want to print - injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0;}' ); - - // Limit the size of certain elements to the dimensions of the slide - injectStyleSheet( '.reveal section>img, .reveal section>video, .reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight +'px}' ); - - document.body.classList.add( 'print-pdf' ); - document.body.style.width = pageWidth + 'px'; - document.body.style.height = pageHeight + 'px'; - - // Add each slide's index as attributes on itself, we need these - // indices to generate slide numbers below - toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) { - hslide.setAttribute( 'data-index-h', h ); - - if( hslide.classList.contains( 'stack' ) ) { - toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) { - vslide.setAttribute( 'data-index-h', h ); - vslide.setAttribute( 'data-index-v', v ); - } ); - } - } ); - - // Slide and slide background layout - toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { - - // Vertical stacks are not centred since their section - // children will be - if( slide.classList.contains( 'stack' ) === false ) { - // Center the slide inside of the page, giving the slide some margin - var left = ( pageWidth - slideWidth ) / 2, - top = ( pageHeight - slideHeight ) / 2; - - var contentHeight = getAbsoluteHeight( slide ); - var numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 ); - - // Center slides vertically - if( numberOfPages === 1 && config.center || slide.classList.contains( 'center' ) ) { - top = Math.max( ( pageHeight - contentHeight ) / 2, 0 ); - } - - // Position the slide inside of the page - slide.style.left = left + 'px'; - slide.style.top = top + 'px'; - slide.style.width = slideWidth + 'px'; - - // TODO Backgrounds need to be multiplied when the slide - // stretches over multiple pages - var background = slide.querySelector( '.slide-background' ); - if( background ) { - background.style.width = pageWidth + 'px'; - background.style.height = ( pageHeight * numberOfPages ) + 'px'; - background.style.top = -top + 'px'; - background.style.left = -left + 'px'; - } - - // Inject notes if `showNotes` is enabled - if( config.showNotes ) { - var notes = getSlideNotes( slide ); - if( notes ) { - var notesSpacing = 8; - var notesElement = document.createElement( 'div' ); - notesElement.classList.add( 'speaker-notes' ); - notesElement.classList.add( 'speaker-notes-pdf' ); - notesElement.innerHTML = notes; - notesElement.style.left = ( notesSpacing - left ) + 'px'; - notesElement.style.bottom = ( notesSpacing - top ) + 'px'; - notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px'; - slide.appendChild( notesElement ); - } - } - - // Inject slide numbers if `slideNumbers` are enabled - if( config.slideNumber ) { - var slideNumberH = parseInt( slide.getAttribute( 'data-index-h' ), 10 ) + 1, - slideNumberV = parseInt( slide.getAttribute( 'data-index-v' ), 10 ) + 1; - - var numberElement = document.createElement( 'div' ); - numberElement.classList.add( 'slide-number' ); - numberElement.classList.add( 'slide-number-pdf' ); - numberElement.innerHTML = formatSlideNumber( slideNumberH, '.', slideNumberV ); - background.appendChild( numberElement ); - } - } - - } ); - - // Show all fragments - toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) { - fragment.classList.add( 'visible' ); - } ); - - } - - /** - * This is an unfortunate necessity. Some actions – such as - * an input field being focused in an iframe or using the - * keyboard to expand text selection beyond the bounds of - * a slide – can trigger our content to be pushed out of view. - * This scrolling can not be prevented by hiding overflow in - * CSS (we already do) so we have to resort to repeatedly - * checking if the slides have been offset :( - */ - function setupScrollPrevention() { - - setInterval( function() { - if( dom.wrapper.scrollTop !== 0 || dom.wrapper.scrollLeft !== 0 ) { - dom.wrapper.scrollTop = 0; - dom.wrapper.scrollLeft = 0; - } - }, 1000 ); - - } - - /** - * Creates an HTML element and returns a reference to it. - * If the element already exists the existing instance will - * be returned. - */ - function createSingletonNode( container, tagname, classname, innerHTML ) { - - // Find all nodes matching the description - var nodes = container.querySelectorAll( '.' + classname ); - - // Check all matches to find one which is a direct child of - // the specified container - for( var i = 0; i < nodes.length; i++ ) { - var testNode = nodes[i]; - if( testNode.parentNode === container ) { - return testNode; - } - } - - // If no node was found, create it now - var node = document.createElement( tagname ); - node.classList.add( classname ); - if( typeof innerHTML === 'string' ) { - node.innerHTML = innerHTML; - } - container.appendChild( node ); - - return node; - - } - - /** - * Creates the slide background elements and appends them - * to the background container. One element is created per - * slide no matter if the given slide has visible background. - */ - function createBackgrounds() { - - var printMode = isPrintingPDF(); - - // Clear prior backgrounds - dom.background.innerHTML = ''; - dom.background.classList.add( 'no-transition' ); - - // Iterate over all horizontal slides - toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) { - - var backgroundStack; - - if( printMode ) { - backgroundStack = createBackground( slideh, slideh ); - } - else { - backgroundStack = createBackground( slideh, dom.background ); - } - - // Iterate over all vertical slides - toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) { - - if( printMode ) { - createBackground( slidev, slidev ); - } - else { - createBackground( slidev, backgroundStack ); - } - - backgroundStack.classList.add( 'stack' ); - - } ); - - } ); - - // Add parallax background if specified - if( config.parallaxBackgroundImage ) { - - dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")'; - dom.background.style.backgroundSize = config.parallaxBackgroundSize; - - // Make sure the below properties are set on the element - these properties are - // needed for proper transitions to be set on the element via CSS. To remove - // annoying background slide-in effect when the presentation starts, apply - // these properties after short time delay - setTimeout( function() { - dom.wrapper.classList.add( 'has-parallax-background' ); - }, 1 ); - - } - else { - - dom.background.style.backgroundImage = ''; - dom.wrapper.classList.remove( 'has-parallax-background' ); - - } - - } - - /** - * Creates a background for the given slide. - * - * @param {HTMLElement} slide - * @param {HTMLElement} container The element that the background - * should be appended to - */ - function createBackground( slide, container ) { - - var data = { - background: slide.getAttribute( 'data-background' ), - backgroundSize: slide.getAttribute( 'data-background-size' ), - backgroundImage: slide.getAttribute( 'data-background-image' ), - backgroundVideo: slide.getAttribute( 'data-background-video' ), - backgroundIframe: slide.getAttribute( 'data-background-iframe' ), - backgroundColor: slide.getAttribute( 'data-background-color' ), - backgroundRepeat: slide.getAttribute( 'data-background-repeat' ), - backgroundPosition: slide.getAttribute( 'data-background-position' ), - backgroundTransition: slide.getAttribute( 'data-background-transition' ) - }; - - var element = document.createElement( 'div' ); - - // Carry over custom classes from the slide to the background - element.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' ); - - if( data.background ) { - // Auto-wrap image urls in url(...) - if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)$/gi.test( data.background ) ) { - slide.setAttribute( 'data-background-image', data.background ); - } - else { - element.style.background = data.background; - } - } - - // Create a hash for this combination of background settings. - // This is used to determine when two slide backgrounds are - // the same. - if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) { - element.setAttribute( 'data-background-hash', data.background + - data.backgroundSize + - data.backgroundImage + - data.backgroundVideo + - data.backgroundIframe + - data.backgroundColor + - data.backgroundRepeat + - data.backgroundPosition + - data.backgroundTransition ); - } - - // Additional and optional background properties - if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize; - if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor; - if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat; - if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition; - if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition ); - - container.appendChild( element ); - - // If backgrounds are being recreated, clear old classes - slide.classList.remove( 'has-dark-background' ); - slide.classList.remove( 'has-light-background' ); - - // If this slide has a background color, add a class that - // signals if it is light or dark. If the slide has no background - // color, no class will be set - var computedBackgroundColor = window.getComputedStyle( element ).backgroundColor; - if( computedBackgroundColor ) { - var rgb = colorToRgb( computedBackgroundColor ); - - // Ignore fully transparent backgrounds. Some browsers return - // rgba(0,0,0,0) when reading the computed background color of - // an element with no background - if( rgb && rgb.a !== 0 ) { - if( colorBrightness( computedBackgroundColor ) < 128 ) { - slide.classList.add( 'has-dark-background' ); - } - else { - slide.classList.add( 'has-light-background' ); - } - } - } - - return element; - - } - - /** - * Registers a listener to postMessage events, this makes it - * possible to call all reveal.js API methods from another - * window. For example: - * - * revealWindow.postMessage( JSON.stringify({ - * method: 'slide', - * args: [ 2 ] - * }), '*' ); - */ - function setupPostMessage() { - - if( config.postMessage ) { - window.addEventListener( 'message', function ( event ) { - var data = event.data; - - // Make sure we're dealing with JSON - if( typeof data === 'string' && data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) { - data = JSON.parse( data ); - - // Check if the requested method can be found - if( data.method && typeof Reveal[data.method] === 'function' ) { - Reveal[data.method].apply( Reveal, data.args ); - } - } - }, false ); - } - - } - - /** - * Applies the configuration settings from the config - * object. May be called multiple times. - */ - function configure( options ) { - - var numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length; - - dom.wrapper.classList.remove( config.transition ); - - // New config options may be passed when this method - // is invoked through the API after initialization - if( typeof options === 'object' ) extend( config, options ); - - // Force linear transition based on browser capabilities - if( features.transforms3d === false ) config.transition = 'linear'; - - dom.wrapper.classList.add( config.transition ); - - dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed ); - dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition ); - - dom.controls.style.display = config.controls ? 'block' : 'none'; - dom.progress.style.display = config.progress ? 'block' : 'none'; - dom.slideNumber.style.display = config.slideNumber && !isPrintingPDF() ? 'block' : 'none'; - - if( config.shuffle ) { - shuffle(); - } - - if( config.rtl ) { - dom.wrapper.classList.add( 'rtl' ); - } - else { - dom.wrapper.classList.remove( 'rtl' ); - } - - if( config.center ) { - dom.wrapper.classList.add( 'center' ); - } - else { - dom.wrapper.classList.remove( 'center' ); - } - - // Exit the paused mode if it was configured off - if( config.pause === false ) { - resume(); - } - - if( config.showNotes ) { - dom.speakerNotes.classList.add( 'visible' ); - } - else { - dom.speakerNotes.classList.remove( 'visible' ); - } - - if( config.mouseWheel ) { - document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF - document.addEventListener( 'mousewheel', onDocumentMouseScroll, false ); - } - else { - document.removeEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF - document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false ); - } - - // Rolling 3D links - if( config.rollingLinks ) { - enableRollingLinks(); - } - else { - disableRollingLinks(); - } - - // Iframe link previews - if( config.previewLinks ) { - enablePreviewLinks(); - } - else { - disablePreviewLinks(); - enablePreviewLinks( '[data-preview-link]' ); - } - - // Remove existing auto-slide controls - if( autoSlidePlayer ) { - autoSlidePlayer.destroy(); - autoSlidePlayer = null; - } - - // Generate auto-slide controls if needed - if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) { - autoSlidePlayer = new Playback( dom.wrapper, function() { - return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 ); - } ); - - autoSlidePlayer.on( 'click', onAutoSlidePlayerClick ); - autoSlidePaused = false; - } - - // When fragments are turned off they should be visible - if( config.fragments === false ) { - toArray( dom.slides.querySelectorAll( '.fragment' ) ).forEach( function( element ) { - element.classList.add( 'visible' ); - element.classList.remove( 'current-fragment' ); - } ); - } - - sync(); - - } - - /** - * Binds all event listeners. - */ - function addEventListeners() { - - eventsAreBound = true; - - window.addEventListener( 'hashchange', onWindowHashChange, false ); - window.addEventListener( 'resize', onWindowResize, false ); - - if( config.touch ) { - dom.wrapper.addEventListener( 'touchstart', onTouchStart, false ); - dom.wrapper.addEventListener( 'touchmove', onTouchMove, false ); - dom.wrapper.addEventListener( 'touchend', onTouchEnd, false ); - - // Support pointer-style touch interaction as well - if( window.navigator.pointerEnabled ) { - // IE 11 uses un-prefixed version of pointer events - dom.wrapper.addEventListener( 'pointerdown', onPointerDown, false ); - dom.wrapper.addEventListener( 'pointermove', onPointerMove, false ); - dom.wrapper.addEventListener( 'pointerup', onPointerUp, false ); - } - else if( window.navigator.msPointerEnabled ) { - // IE 10 uses prefixed version of pointer events - dom.wrapper.addEventListener( 'MSPointerDown', onPointerDown, false ); - dom.wrapper.addEventListener( 'MSPointerMove', onPointerMove, false ); - dom.wrapper.addEventListener( 'MSPointerUp', onPointerUp, false ); - } - } - - if( config.keyboard ) { - document.addEventListener( 'keydown', onDocumentKeyDown, false ); - document.addEventListener( 'keypress', onDocumentKeyPress, false ); - } - - if( config.progress && dom.progress ) { - dom.progress.addEventListener( 'click', onProgressClicked, false ); - } - - if( config.focusBodyOnPageVisibilityChange ) { - var visibilityChange; - - if( 'hidden' in document ) { - visibilityChange = 'visibilitychange'; - } - else if( 'msHidden' in document ) { - visibilityChange = 'msvisibilitychange'; - } - else if( 'webkitHidden' in document ) { - visibilityChange = 'webkitvisibilitychange'; - } - - if( visibilityChange ) { - document.addEventListener( visibilityChange, onPageVisibilityChange, false ); - } - } - - // Listen to both touch and click events, in case the device - // supports both - var pointerEvents = [ 'touchstart', 'click' ]; - - // Only support touch for Android, fixes double navigations in - // stock browser - if( UA.match( /android/gi ) ) { - pointerEvents = [ 'touchstart' ]; - } - - pointerEvents.forEach( function( eventName ) { - dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } ); - dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } ); - dom.controlsUp.forEach( function( el ) { el.addEventListener( eventName, onNavigateUpClicked, false ); } ); - dom.controlsDown.forEach( function( el ) { el.addEventListener( eventName, onNavigateDownClicked, false ); } ); - dom.controlsPrev.forEach( function( el ) { el.addEventListener( eventName, onNavigatePrevClicked, false ); } ); - dom.controlsNext.forEach( function( el ) { el.addEventListener( eventName, onNavigateNextClicked, false ); } ); - } ); - - } - - /** - * Unbinds all event listeners. - */ - function removeEventListeners() { - - eventsAreBound = false; - - document.removeEventListener( 'keydown', onDocumentKeyDown, false ); - document.removeEventListener( 'keypress', onDocumentKeyPress, false ); - window.removeEventListener( 'hashchange', onWindowHashChange, false ); - window.removeEventListener( 'resize', onWindowResize, false ); - - dom.wrapper.removeEventListener( 'touchstart', onTouchStart, false ); - dom.wrapper.removeEventListener( 'touchmove', onTouchMove, false ); - dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false ); - - // IE11 - if( window.navigator.pointerEnabled ) { - dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false ); - dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false ); - dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false ); - } - // IE10 - else if( window.navigator.msPointerEnabled ) { - dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false ); - dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false ); - dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false ); - } - - if ( config.progress && dom.progress ) { - dom.progress.removeEventListener( 'click', onProgressClicked, false ); - } - - [ 'touchstart', 'click' ].forEach( function( eventName ) { - dom.controlsLeft.forEach( function( el ) { el.removeEventListener( eventName, onNavigateLeftClicked, false ); } ); - dom.controlsRight.forEach( function( el ) { el.removeEventListener( eventName, onNavigateRightClicked, false ); } ); - dom.controlsUp.forEach( function( el ) { el.removeEventListener( eventName, onNavigateUpClicked, false ); } ); - dom.controlsDown.forEach( function( el ) { el.removeEventListener( eventName, onNavigateDownClicked, false ); } ); - dom.controlsPrev.forEach( function( el ) { el.removeEventListener( eventName, onNavigatePrevClicked, false ); } ); - dom.controlsNext.forEach( function( el ) { el.removeEventListener( eventName, onNavigateNextClicked, false ); } ); - } ); - - } - - /** - * Extend object a with the properties of object b. - * If there's a conflict, object b takes precedence. - */ - function extend( a, b ) { - - for( var i in b ) { - a[ i ] = b[ i ]; - } - - } - - /** - * Converts the target object to an array. - */ - function toArray( o ) { - - return Array.prototype.slice.call( o ); - - } - - /** - * Utility for deserializing a value. - */ - function deserialize( value ) { - - if( typeof value === 'string' ) { - if( value === 'null' ) return null; - else if( value === 'true' ) return true; - else if( value === 'false' ) return false; - else if( value.match( /^\d+$/ ) ) return parseFloat( value ); - } - - return value; - - } - - /** - * Measures the distance in pixels between point a - * and point b. - * - * @param {Object} a point with x/y properties - * @param {Object} b point with x/y properties - */ - function distanceBetween( a, b ) { - - var dx = a.x - b.x, - dy = a.y - b.y; - - return Math.sqrt( dx*dx + dy*dy ); - - } - - /** - * Applies a CSS transform to the target element. - */ - function transformElement( element, transform ) { - - element.style.WebkitTransform = transform; - element.style.MozTransform = transform; - element.style.msTransform = transform; - element.style.transform = transform; - - } - - /** - * Applies CSS transforms to the slides container. The container - * is transformed from two separate sources: layout and the overview - * mode. - */ - function transformSlides( transforms ) { - - // Pick up new transforms from arguments - if( typeof transforms.layout === 'string' ) slidesTransform.layout = transforms.layout; - if( typeof transforms.overview === 'string' ) slidesTransform.overview = transforms.overview; - - // Apply the transforms to the slides container - if( slidesTransform.layout ) { - transformElement( dom.slides, slidesTransform.layout + ' ' + slidesTransform.overview ); - } - else { - transformElement( dom.slides, slidesTransform.overview ); - } - - } - - /** - * Injects the given CSS styles into the DOM. - */ - function injectStyleSheet( value ) { - - var tag = document.createElement( 'style' ); - tag.type = 'text/css'; - if( tag.styleSheet ) { - tag.styleSheet.cssText = value; - } - else { - tag.appendChild( document.createTextNode( value ) ); - } - document.getElementsByTagName( 'head' )[0].appendChild( tag ); - - } - - /** - * Converts various color input formats to an {r:0,g:0,b:0} object. - * - * @param {String} color The string representation of a color, - * the following formats are supported: - * - #000 - * - #000000 - * - rgb(0,0,0) - */ - function colorToRgb( color ) { - - var hex3 = color.match( /^#([0-9a-f]{3})$/i ); - if( hex3 && hex3[1] ) { - hex3 = hex3[1]; - return { - r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11, - g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11, - b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11 - }; - } - - var hex6 = color.match( /^#([0-9a-f]{6})$/i ); - if( hex6 && hex6[1] ) { - hex6 = hex6[1]; - return { - r: parseInt( hex6.substr( 0, 2 ), 16 ), - g: parseInt( hex6.substr( 2, 2 ), 16 ), - b: parseInt( hex6.substr( 4, 2 ), 16 ) - }; - } - - var rgb = color.match( /^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i ); - if( rgb ) { - return { - r: parseInt( rgb[1], 10 ), - g: parseInt( rgb[2], 10 ), - b: parseInt( rgb[3], 10 ) - }; - } - - var rgba = color.match( /^rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\,\s*([\d]+|[\d]*.[\d]+)\s*\)$/i ); - if( rgba ) { - return { - r: parseInt( rgba[1], 10 ), - g: parseInt( rgba[2], 10 ), - b: parseInt( rgba[3], 10 ), - a: parseFloat( rgba[4] ) - }; - } - - return null; - - } - - /** - * Calculates brightness on a scale of 0-255. - * - * @param color See colorStringToRgb for supported formats. - */ - function colorBrightness( color ) { - - if( typeof color === 'string' ) color = colorToRgb( color ); - - if( color ) { - return ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000; - } - - return null; - - } - - /** - * Retrieves the height of the given element by looking - * at the position and height of its immediate children. - */ - function getAbsoluteHeight( element ) { - - var height = 0; - - if( element ) { - var absoluteChildren = 0; - - toArray( element.childNodes ).forEach( function( child ) { - - if( typeof child.offsetTop === 'number' && child.style ) { - // Count # of abs children - if( window.getComputedStyle( child ).position === 'absolute' ) { - absoluteChildren += 1; - } - - height = Math.max( height, child.offsetTop + child.offsetHeight ); - } - - } ); - - // If there are no absolute children, use offsetHeight - if( absoluteChildren === 0 ) { - height = element.offsetHeight; - } - - } - - return height; - - } - - /** - * Returns the remaining height within the parent of the - * target element. - * - * remaining height = [ configured parent height ] - [ current parent height ] - */ - function getRemainingHeight( element, height ) { - - height = height || 0; - - if( element ) { - var newHeight, oldHeight = element.style.height; - - // Change the .stretch element height to 0 in order find the height of all - // the other elements - element.style.height = '0px'; - newHeight = height - element.parentNode.offsetHeight; - - // Restore the old height, just in case - element.style.height = oldHeight + 'px'; - - return newHeight; - } - - return height; - - } - - /** - * Checks if this instance is being used to print a PDF. - */ - function isPrintingPDF() { - - return ( /print-pdf/gi ).test( window.location.search ); - - } - - /** - * Hides the address bar if we're on a mobile device. - */ - function hideAddressBar() { - - if( config.hideAddressBar && isMobileDevice ) { - // Events that should trigger the address bar to hide - window.addEventListener( 'load', removeAddressBar, false ); - window.addEventListener( 'orientationchange', removeAddressBar, false ); - } - - } - - /** - * Causes the address bar to hide on mobile devices, - * more vertical space ftw. - */ - function removeAddressBar() { - - setTimeout( function() { - window.scrollTo( 0, 1 ); - }, 10 ); - - } - - /** - * Dispatches an event of the specified type from the - * reveal DOM element. - */ - function dispatchEvent( type, args ) { - - var event = document.createEvent( 'HTMLEvents', 1, 2 ); - event.initEvent( type, true, true ); - extend( event, args ); - dom.wrapper.dispatchEvent( event ); - - // If we're in an iframe, post each reveal.js event to the - // parent window. Used by the notes plugin - if( config.postMessageEvents && window.parent !== window.self ) { - window.parent.postMessage( JSON.stringify({ namespace: 'reveal', eventName: type, state: getState() }), '*' ); - } - - } - - /** - * Wrap all links in 3D goodness. - */ - function enableRollingLinks() { - - if( features.transforms3d && !( 'msPerspective' in document.body.style ) ) { - var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a' ); - - for( var i = 0, len = anchors.length; i < len; i++ ) { - var anchor = anchors[i]; - - if( anchor.textContent && !anchor.querySelector( '*' ) && ( !anchor.className || !anchor.classList.contains( anchor, 'roll' ) ) ) { - var span = document.createElement('span'); - span.setAttribute('data-title', anchor.text); - span.innerHTML = anchor.innerHTML; - - anchor.classList.add( 'roll' ); - anchor.innerHTML = ''; - anchor.appendChild(span); - } - } - } - - } - - /** - * Unwrap all 3D links. - */ - function disableRollingLinks() { - - var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a.roll' ); - - for( var i = 0, len = anchors.length; i < len; i++ ) { - var anchor = anchors[i]; - var span = anchor.querySelector( 'span' ); - - if( span ) { - anchor.classList.remove( 'roll' ); - anchor.innerHTML = span.innerHTML; - } - } - - } - - /** - * Bind preview frame links. - */ - function enablePreviewLinks( selector ) { - - var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) ); - - anchors.forEach( function( element ) { - if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) { - element.addEventListener( 'click', onPreviewLinkClicked, false ); - } - } ); - - } - - /** - * Unbind preview frame links. - */ - function disablePreviewLinks() { - - var anchors = toArray( document.querySelectorAll( 'a' ) ); - - anchors.forEach( function( element ) { - if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) { - element.removeEventListener( 'click', onPreviewLinkClicked, false ); - } - } ); - - } - - /** - * Opens a preview window for the target URL. - */ - function showPreview( url ) { - - closeOverlay(); - - dom.overlay = document.createElement( 'div' ); - dom.overlay.classList.add( 'overlay' ); - dom.overlay.classList.add( 'overlay-preview' ); - dom.wrapper.appendChild( dom.overlay ); - - dom.overlay.innerHTML = [ - '
', - '', - '', - '
', - '
', - '
', - '', - '
' - ].join(''); - - dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) { - dom.overlay.classList.add( 'loaded' ); - }, false ); - - dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) { - closeOverlay(); - event.preventDefault(); - }, false ); - - dom.overlay.querySelector( '.external' ).addEventListener( 'click', function( event ) { - closeOverlay(); - }, false ); - - setTimeout( function() { - dom.overlay.classList.add( 'visible' ); - }, 1 ); - - } - - /** - * Opens a overlay window with help material. - */ - function showHelp() { - - if( config.help ) { - - closeOverlay(); - - dom.overlay = document.createElement( 'div' ); - dom.overlay.classList.add( 'overlay' ); - dom.overlay.classList.add( 'overlay-help' ); - dom.wrapper.appendChild( dom.overlay ); - - var html = '

Keyboard Shortcuts


'; - - html += ''; - for( var key in keyboardShortcuts ) { - html += ''; - } - - html += '
KEYACTION
' + key + '' + keyboardShortcuts[ key ] + '
'; - - dom.overlay.innerHTML = [ - '
', - '', - '
', - '
', - '
'+ html +'
', - '
' - ].join(''); - - dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) { - closeOverlay(); - event.preventDefault(); - }, false ); - - setTimeout( function() { - dom.overlay.classList.add( 'visible' ); - }, 1 ); - - } - - } - - /** - * Closes any currently open overlay. - */ - function closeOverlay() { - - if( dom.overlay ) { - dom.overlay.parentNode.removeChild( dom.overlay ); - dom.overlay = null; - } - - } - - /** - * Applies JavaScript-controlled layout rules to the - * presentation. - */ - function layout() { - - if( dom.wrapper && !isPrintingPDF() ) { - - var size = getComputedSlideSize(); - - var slidePadding = 20; // TODO Dig this out of DOM - - // Layout the contents of the slides - layoutSlideContents( config.width, config.height, slidePadding ); - - dom.slides.style.width = size.width + 'px'; - dom.slides.style.height = size.height + 'px'; - - // Determine scale of content to fit within available space - scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height ); - - // Respect max/min scale settings - scale = Math.max( scale, config.minScale ); - scale = Math.min( scale, config.maxScale ); - - // Don't apply any scaling styles if scale is 1 - if( scale === 1 ) { - dom.slides.style.zoom = ''; - dom.slides.style.left = ''; - dom.slides.style.top = ''; - dom.slides.style.bottom = ''; - dom.slides.style.right = ''; - transformSlides( { layout: '' } ); - } - else { - // Prefer zoom for scaling up so that content remains crisp. - // Don't use zoom to scale down since that can lead to shifts - // in text layout/line breaks. - if( scale > 1 && features.zoom ) { - dom.slides.style.zoom = scale; - dom.slides.style.left = ''; - dom.slides.style.top = ''; - dom.slides.style.bottom = ''; - dom.slides.style.right = ''; - transformSlides( { layout: '' } ); - } - // Apply scale transform as a fallback - else { - dom.slides.style.zoom = ''; - dom.slides.style.left = '50%'; - dom.slides.style.top = '50%'; - dom.slides.style.bottom = 'auto'; - dom.slides.style.right = 'auto'; - transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } ); - } - } - - // Select all slides, vertical and horizontal - var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ); - - for( var i = 0, len = slides.length; i < len; i++ ) { - var slide = slides[ i ]; - - // Don't bother updating invisible slides - if( slide.style.display === 'none' ) { - continue; - } - - if( config.center || slide.classList.contains( 'center' ) ) { - // Vertical stacks are not centred since their section - // children will be - if( slide.classList.contains( 'stack' ) ) { - slide.style.top = 0; - } - else { - slide.style.top = Math.max( ( ( size.height - getAbsoluteHeight( slide ) ) / 2 ) - slidePadding, 0 ) + 'px'; - } - } - else { - slide.style.top = ''; - } - - } - - updateProgress(); - updateParallax(); - - } - - } - - /** - * Applies layout logic to the contents of all slides in - * the presentation. - */ - function layoutSlideContents( width, height, padding ) { - - // Handle sizing of elements with the 'stretch' class - toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( function( element ) { - - // Determine how much vertical space we can use - var remainingHeight = getRemainingHeight( element, height ); - - // Consider the aspect ratio of media elements - if( /(img|video)/gi.test( element.nodeName ) ) { - var nw = element.naturalWidth || element.videoWidth, - nh = element.naturalHeight || element.videoHeight; - - var es = Math.min( width / nw, remainingHeight / nh ); - - element.style.width = ( nw * es ) + 'px'; - element.style.height = ( nh * es ) + 'px'; - - } - else { - element.style.width = width + 'px'; - element.style.height = remainingHeight + 'px'; - } - - } ); - - } - - /** - * Calculates the computed pixel size of our slides. These - * values are based on the width and height configuration - * options. - */ - function getComputedSlideSize( presentationWidth, presentationHeight ) { - - var size = { - // Slide size - width: config.width, - height: config.height, - - // Presentation size - presentationWidth: presentationWidth || dom.wrapper.offsetWidth, - presentationHeight: presentationHeight || dom.wrapper.offsetHeight - }; - - // Reduce available space by margin - size.presentationWidth -= ( size.presentationWidth * config.margin ); - size.presentationHeight -= ( size.presentationHeight * config.margin ); - - // Slide width may be a percentage of available width - if( typeof size.width === 'string' && /%$/.test( size.width ) ) { - size.width = parseInt( size.width, 10 ) / 100 * size.presentationWidth; - } - - // Slide height may be a percentage of available height - if( typeof size.height === 'string' && /%$/.test( size.height ) ) { - size.height = parseInt( size.height, 10 ) / 100 * size.presentationHeight; - } - - return size; - - } - - /** - * Stores the vertical index of a stack so that the same - * vertical slide can be selected when navigating to and - * from the stack. - * - * @param {HTMLElement} stack The vertical stack element - * @param {int} v Index to memorize - */ - function setPreviousVerticalIndex( stack, v ) { - - if( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) { - stack.setAttribute( 'data-previous-indexv', v || 0 ); - } - - } - - /** - * Retrieves the vertical index which was stored using - * #setPreviousVerticalIndex() or 0 if no previous index - * exists. - * - * @param {HTMLElement} stack The vertical stack element - */ - function getPreviousVerticalIndex( stack ) { - - if( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) { - // Prefer manually defined start-indexv - var attributeName = stack.hasAttribute( 'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv'; - - return parseInt( stack.getAttribute( attributeName ) || 0, 10 ); - } - - return 0; - - } - - /** - * Displays the overview of slides (quick nav) by scaling - * down and arranging all slide elements. - */ - function activateOverview() { - - // Only proceed if enabled in config - if( config.overview && !isOverview() ) { - - overview = true; - - dom.wrapper.classList.add( 'overview' ); - dom.wrapper.classList.remove( 'overview-deactivating' ); - - if( features.overviewTransitions ) { - setTimeout( function() { - dom.wrapper.classList.add( 'overview-animated' ); - }, 1 ); - } - - // Don't auto-slide while in overview mode - cancelAutoSlide(); - - // Move the backgrounds element into the slide container to - // that the same scaling is applied - dom.slides.appendChild( dom.background ); - - // Clicking on an overview slide navigates to it - toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { - if( !slide.classList.contains( 'stack' ) ) { - slide.addEventListener( 'click', onOverviewSlideClicked, true ); - } - } ); - - // Calculate slide sizes - var margin = 70; - var slideSize = getComputedSlideSize(); - overviewSlideWidth = slideSize.width + margin; - overviewSlideHeight = slideSize.height + margin; - - // Reverse in RTL mode - if( config.rtl ) { - overviewSlideWidth = -overviewSlideWidth; - } - - updateSlidesVisibility(); - layoutOverview(); - updateOverview(); - - layout(); - - // Notify observers of the overview showing - dispatchEvent( 'overviewshown', { - 'indexh': indexh, - 'indexv': indexv, - 'currentSlide': currentSlide - } ); - - } - - } - - /** - * Uses CSS transforms to position all slides in a grid for - * display inside of the overview mode. - */ - function layoutOverview() { - - // Layout slides - toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) { - hslide.setAttribute( 'data-index-h', h ); - transformElement( hslide, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' ); - - if( hslide.classList.contains( 'stack' ) ) { - - toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) { - vslide.setAttribute( 'data-index-h', h ); - vslide.setAttribute( 'data-index-v', v ); - - transformElement( vslide, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' ); - } ); - - } - } ); - - // Layout slide backgrounds - toArray( dom.background.childNodes ).forEach( function( hbackground, h ) { - transformElement( hbackground, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' ); - - toArray( hbackground.querySelectorAll( '.slide-background' ) ).forEach( function( vbackground, v ) { - transformElement( vbackground, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' ); - } ); - } ); - - } - - /** - * Moves the overview viewport to the current slides. - * Called each time the current slide changes. - */ - function updateOverview() { - - transformSlides( { - overview: [ - 'translateX('+ ( -indexh * overviewSlideWidth ) +'px)', - 'translateY('+ ( -indexv * overviewSlideHeight ) +'px)', - 'translateZ('+ ( window.innerWidth < 400 ? -1000 : -2500 ) +'px)' - ].join( ' ' ) - } ); - - } - - /** - * Exits the slide overview and enters the currently - * active slide. - */ - function deactivateOverview() { - - // Only proceed if enabled in config - if( config.overview ) { - - overview = false; - - dom.wrapper.classList.remove( 'overview' ); - dom.wrapper.classList.remove( 'overview-animated' ); - - // Temporarily add a class so that transitions can do different things - // depending on whether they are exiting/entering overview, or just - // moving from slide to slide - dom.wrapper.classList.add( 'overview-deactivating' ); - - setTimeout( function () { - dom.wrapper.classList.remove( 'overview-deactivating' ); - }, 1 ); - - // Move the background element back out - dom.wrapper.appendChild( dom.background ); - - // Clean up changes made to slides - toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { - transformElement( slide, '' ); - - slide.removeEventListener( 'click', onOverviewSlideClicked, true ); - } ); - - // Clean up changes made to backgrounds - toArray( dom.background.querySelectorAll( '.slide-background' ) ).forEach( function( background ) { - transformElement( background, '' ); - } ); - - transformSlides( { overview: '' } ); - - slide( indexh, indexv ); - - layout(); - - cueAutoSlide(); - - // Notify observers of the overview hiding - dispatchEvent( 'overviewhidden', { - 'indexh': indexh, - 'indexv': indexv, - 'currentSlide': currentSlide - } ); - - } - } - - /** - * Toggles the slide overview mode on and off. - * - * @param {Boolean} override Optional flag which overrides the - * toggle logic and forcibly sets the desired state. True means - * overview is open, false means it's closed. - */ - function toggleOverview( override ) { - - if( typeof override === 'boolean' ) { - override ? activateOverview() : deactivateOverview(); - } - else { - isOverview() ? deactivateOverview() : activateOverview(); - } - - } - - /** - * Checks if the overview is currently active. - * - * @return {Boolean} true if the overview is active, - * false otherwise - */ - function isOverview() { - - return overview; - - } - - /** - * Checks if the current or specified slide is vertical - * (nested within another slide). - * - * @param {HTMLElement} slide [optional] The slide to check - * orientation of - */ - function isVerticalSlide( slide ) { - - // Prefer slide argument, otherwise use current slide - slide = slide ? slide : currentSlide; - - return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i ); - - } - - /** - * Handling the fullscreen functionality via the fullscreen API - * - * @see http://fullscreen.spec.whatwg.org/ - * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode - */ - function enterFullscreen() { - - var element = document.documentElement; - - // Check which implementation is available - var requestMethod = element.requestFullscreen || - element.webkitRequestFullscreen || - element.webkitRequestFullScreen || - element.mozRequestFullScreen || - element.msRequestFullscreen; - - if( requestMethod ) { - requestMethod.apply( element ); - } - - } - - /** - * Enters the paused mode which fades everything on screen to - * black. - */ - function pause() { - - if( config.pause ) { - var wasPaused = dom.wrapper.classList.contains( 'paused' ); - - cancelAutoSlide(); - dom.wrapper.classList.add( 'paused' ); - - if( wasPaused === false ) { - dispatchEvent( 'paused' ); - } - } - - } - - /** - * Exits from the paused mode. - */ - function resume() { - - var wasPaused = dom.wrapper.classList.contains( 'paused' ); - dom.wrapper.classList.remove( 'paused' ); - - cueAutoSlide(); - - if( wasPaused ) { - dispatchEvent( 'resumed' ); - } - - } - - /** - * Toggles the paused mode on and off. - */ - function togglePause( override ) { - - if( typeof override === 'boolean' ) { - override ? pause() : resume(); - } - else { - isPaused() ? resume() : pause(); - } - - } - - /** - * Checks if we are currently in the paused mode. - */ - function isPaused() { - - return dom.wrapper.classList.contains( 'paused' ); - - } - - /** - * Toggles the auto slide mode on and off. - * - * @param {Boolean} override Optional flag which sets the desired state. - * True means autoplay starts, false means it stops. - */ - - function toggleAutoSlide( override ) { - - if( typeof override === 'boolean' ) { - override ? resumeAutoSlide() : pauseAutoSlide(); - } - - else { - autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide(); - } - - } - - /** - * Checks if the auto slide mode is currently on. - */ - function isAutoSliding() { - - return !!( autoSlide && !autoSlidePaused ); - - } - - /** - * Steps from the current point in the presentation to the - * slide which matches the specified horizontal and vertical - * indices. - * - * @param {int} h Horizontal index of the target slide - * @param {int} v Vertical index of the target slide - * @param {int} f Optional index of a fragment within the - * target slide to activate - * @param {int} o Optional origin for use in multimaster environments - */ - function slide( h, v, f, o ) { - - // Remember where we were at before - previousSlide = currentSlide; - - // Query all horizontal slides in the deck - var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ); - - // If no vertical index is specified and the upcoming slide is a - // stack, resume at its previous vertical index - if( v === undefined && !isOverview() ) { - v = getPreviousVerticalIndex( horizontalSlides[ h ] ); - } - - // If we were on a vertical stack, remember what vertical index - // it was on so we can resume at the same position when returning - if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) { - setPreviousVerticalIndex( previousSlide.parentNode, indexv ); - } - - // Remember the state before this slide - var stateBefore = state.concat(); - - // Reset the state array - state.length = 0; - - var indexhBefore = indexh || 0, - indexvBefore = indexv || 0; - - // Activate and transition to the new slide - indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h ); - indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v ); - - // Update the visibility of slides now that the indices have changed - updateSlidesVisibility(); - - layout(); - - // Apply the new state - stateLoop: for( var i = 0, len = state.length; i < len; i++ ) { - // Check if this state existed on the previous slide. If it - // did, we will avoid adding it repeatedly - for( var j = 0; j < stateBefore.length; j++ ) { - if( stateBefore[j] === state[i] ) { - stateBefore.splice( j, 1 ); - continue stateLoop; - } - } - - document.documentElement.classList.add( state[i] ); - - // Dispatch custom event matching the state's name - dispatchEvent( state[i] ); - } - - // Clean up the remains of the previous state - while( stateBefore.length ) { - document.documentElement.classList.remove( stateBefore.pop() ); - } - - // Update the overview if it's currently active - if( isOverview() ) { - updateOverview(); - } - - // Find the current horizontal slide and any possible vertical slides - // within it - var currentHorizontalSlide = horizontalSlides[ indexh ], - currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' ); - - // Store references to the previous and current slides - currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide; - - // Show fragment, if specified - if( typeof f !== 'undefined' ) { - navigateFragment( f ); - } - - // Dispatch an event if the slide changed - var slideChanged = ( indexh !== indexhBefore || indexv !== indexvBefore ); - if( slideChanged ) { - dispatchEvent( 'slidechanged', { - 'indexh': indexh, - 'indexv': indexv, - 'previousSlide': previousSlide, - 'currentSlide': currentSlide, - 'origin': o - } ); - } - else { - // Ensure that the previous slide is never the same as the current - previousSlide = null; - } - - // Solves an edge case where the previous slide maintains the - // 'present' class when navigating between adjacent vertical - // stacks - if( previousSlide ) { - previousSlide.classList.remove( 'present' ); - previousSlide.setAttribute( 'aria-hidden', 'true' ); - - // Reset all slides upon navigate to home - // Issue: #285 - if ( dom.wrapper.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) { - // Launch async task - setTimeout( function () { - var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i; - for( i in slides ) { - if( slides[i] ) { - // Reset stack - setPreviousVerticalIndex( slides[i], 0 ); - } - } - }, 0 ); - } - } - - // Handle embedded content - if( slideChanged || !previousSlide ) { - stopEmbeddedContent( previousSlide ); - startEmbeddedContent( currentSlide ); - } - - // Announce the current slide contents, for screen readers - dom.statusDiv.textContent = currentSlide.textContent; - - updateControls(); - updateProgress(); - updateBackground(); - updateParallax(); - updateSlideNumber(); - updateNotes(); - - // Update the URL hash - writeURL(); - - cueAutoSlide(); - - } - - /** - * Syncs the presentation with the current DOM. Useful - * when new slides or control elements are added or when - * the configuration has changed. - */ - function sync() { - - // Subscribe to input - removeEventListeners(); - addEventListeners(); - - // Force a layout to make sure the current config is accounted for - layout(); - - // Reflect the current autoSlide value - autoSlide = config.autoSlide; - - // Start auto-sliding if it's enabled - cueAutoSlide(); - - // Re-create the slide backgrounds - createBackgrounds(); - - // Write the current hash to the URL - writeURL(); - - sortAllFragments(); - - updateControls(); - updateProgress(); - updateBackground( true ); - updateSlideNumber(); - updateSlidesVisibility(); - updateNotes(); - - formatEmbeddedContent(); - startEmbeddedContent( currentSlide ); - - if( isOverview() ) { - layoutOverview(); - } - - } - - /** - * Resets all vertical slides so that only the first - * is visible. - */ - function resetVerticalSlides() { - - var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); - horizontalSlides.forEach( function( horizontalSlide ) { - - var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); - verticalSlides.forEach( function( verticalSlide, y ) { - - if( y > 0 ) { - verticalSlide.classList.remove( 'present' ); - verticalSlide.classList.remove( 'past' ); - verticalSlide.classList.add( 'future' ); - verticalSlide.setAttribute( 'aria-hidden', 'true' ); - } - - } ); - - } ); - - } - - /** - * Sorts and formats all of fragments in the - * presentation. - */ - function sortAllFragments() { - - var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); - horizontalSlides.forEach( function( horizontalSlide ) { - - var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); - verticalSlides.forEach( function( verticalSlide, y ) { - - sortFragments( verticalSlide.querySelectorAll( '.fragment' ) ); - - } ); - - if( verticalSlides.length === 0 ) sortFragments( horizontalSlide.querySelectorAll( '.fragment' ) ); - - } ); - - } - - /** - * Randomly shuffles all slides in the deck. - */ - function shuffle() { - - var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); - - slides.forEach( function( slide ) { - - // Insert this slide next to another random slide. This may - // cause the slide to insert before itself but that's fine. - dom.slides.insertBefore( slide, slides[ Math.floor( Math.random() * slides.length ) ] ); - - } ); - - } - - /** - * Updates one dimension of slides by showing the slide - * with the specified index. - * - * @param {String} selector A CSS selector that will fetch - * the group of slides we are working with - * @param {Number} index The index of the slide that should be - * shown - * - * @return {Number} The index of the slide that is now shown, - * might differ from the passed in index if it was out of - * bounds. - */ - function updateSlides( selector, index ) { - - // Select all slides and convert the NodeList result to - // an array - var slides = toArray( dom.wrapper.querySelectorAll( selector ) ), - slidesLength = slides.length; - - var printMode = isPrintingPDF(); - - if( slidesLength ) { - - // Should the index loop? - if( config.loop ) { - index %= slidesLength; - - if( index < 0 ) { - index = slidesLength + index; - } - } - - // Enforce max and minimum index bounds - index = Math.max( Math.min( index, slidesLength - 1 ), 0 ); - - for( var i = 0; i < slidesLength; i++ ) { - var element = slides[i]; - - var reverse = config.rtl && !isVerticalSlide( element ); - - element.classList.remove( 'past' ); - element.classList.remove( 'present' ); - element.classList.remove( 'future' ); - - // http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute - element.setAttribute( 'hidden', '' ); - element.setAttribute( 'aria-hidden', 'true' ); - - // If this element contains vertical slides - if( element.querySelector( 'section' ) ) { - element.classList.add( 'stack' ); - } - - // If we're printing static slides, all slides are "present" - if( printMode ) { - element.classList.add( 'present' ); - continue; - } - - if( i < index ) { - // Any element previous to index is given the 'past' class - element.classList.add( reverse ? 'future' : 'past' ); - - if( config.fragments ) { - var pastFragments = toArray( element.querySelectorAll( '.fragment' ) ); - - // Show all fragments on prior slides - while( pastFragments.length ) { - var pastFragment = pastFragments.pop(); - pastFragment.classList.add( 'visible' ); - pastFragment.classList.remove( 'current-fragment' ); - } - } - } - else if( i > index ) { - // Any element subsequent to index is given the 'future' class - element.classList.add( reverse ? 'past' : 'future' ); - - if( config.fragments ) { - var futureFragments = toArray( element.querySelectorAll( '.fragment.visible' ) ); - - // No fragments in future slides should be visible ahead of time - while( futureFragments.length ) { - var futureFragment = futureFragments.pop(); - futureFragment.classList.remove( 'visible' ); - futureFragment.classList.remove( 'current-fragment' ); - } - } - } - } - - // Mark the current slide as present - slides[index].classList.add( 'present' ); - slides[index].removeAttribute( 'hidden' ); - slides[index].removeAttribute( 'aria-hidden' ); - - // If this slide has a state associated with it, add it - // onto the current state of the deck - var slideState = slides[index].getAttribute( 'data-state' ); - if( slideState ) { - state = state.concat( slideState.split( ' ' ) ); - } - - } - else { - // Since there are no slides we can't be anywhere beyond the - // zeroth index - index = 0; - } - - return index; - - } - - /** - * Optimization method; hide all slides that are far away - * from the present slide. - */ - function updateSlidesVisibility() { - - // Select all slides and convert the NodeList result to - // an array - var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ), - horizontalSlidesLength = horizontalSlides.length, - distanceX, - distanceY; - - if( horizontalSlidesLength && typeof indexh !== 'undefined' ) { - - // The number of steps away from the present slide that will - // be visible - var viewDistance = isOverview() ? 10 : config.viewDistance; - - // Limit view distance on weaker devices - if( isMobileDevice ) { - viewDistance = isOverview() ? 6 : 2; - } - - // All slides need to be visible when exporting to PDF - if( isPrintingPDF() ) { - viewDistance = Number.MAX_VALUE; - } - - for( var x = 0; x < horizontalSlidesLength; x++ ) { - var horizontalSlide = horizontalSlides[x]; - - var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ), - verticalSlidesLength = verticalSlides.length; - - // Determine how far away this slide is from the present - distanceX = Math.abs( ( indexh || 0 ) - x ) || 0; - - // If the presentation is looped, distance should measure - // 1 between the first and last slides - if( config.loop ) { - distanceX = Math.abs( ( ( indexh || 0 ) - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0; - } - - // Show the horizontal slide if it's within the view distance - if( distanceX < viewDistance ) { - showSlide( horizontalSlide ); - } - else { - hideSlide( horizontalSlide ); - } - - if( verticalSlidesLength ) { - - var oy = getPreviousVerticalIndex( horizontalSlide ); - - for( var y = 0; y < verticalSlidesLength; y++ ) { - var verticalSlide = verticalSlides[y]; - - distanceY = x === ( indexh || 0 ) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy ); - - if( distanceX + distanceY < viewDistance ) { - showSlide( verticalSlide ); - } - else { - hideSlide( verticalSlide ); - } - } - - } - } - - } - - } - - /** - * Pick up notes from the current slide and display tham - * to the viewer. - * - * @see `showNotes` config value - */ - function updateNotes() { - - if( config.showNotes && dom.speakerNotes && currentSlide && !isPrintingPDF() ) { - - dom.speakerNotes.innerHTML = getSlideNotes() || ''; - - } - - } - - /** - * Updates the progress bar to reflect the current slide. - */ - function updateProgress() { - - // Update progress if enabled - if( config.progress && dom.progressbar ) { - - dom.progressbar.style.width = getProgress() * dom.wrapper.offsetWidth + 'px'; - - } - - } - - /** - * Updates the slide number div to reflect the current slide. - * - * The following slide number formats are available: - * "h.v": horizontal . vertical slide number (default) - * "h/v": horizontal / vertical slide number - * "c": flattened slide number - * "c/t": flattened slide number / total slides - */ - function updateSlideNumber() { - - // Update slide number if enabled - if( config.slideNumber && dom.slideNumber ) { - - var value = []; - var format = 'h.v'; - - // Check if a custom number format is available - if( typeof config.slideNumber === 'string' ) { - format = config.slideNumber; - } - - switch( format ) { - case 'c': - value.push( getSlidePastCount() + 1 ); - break; - case 'c/t': - value.push( getSlidePastCount() + 1, '/', getTotalSlides() ); - break; - case 'h/v': - value.push( indexh + 1 ); - if( isVerticalSlide() ) value.push( '/', indexv + 1 ); - break; - default: - value.push( indexh + 1 ); - if( isVerticalSlide() ) value.push( '.', indexv + 1 ); - } - - dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] ); - } - - } - - /** - * Applies HTML formatting to a slide number before it's - * written to the DOM. - */ - function formatSlideNumber( a, delimiter, b ) { - - if( typeof b === 'number' && !isNaN( b ) ) { - return ''+ a +'' + - ''+ delimiter +'' + - ''+ b +''; - } - else { - return ''+ a +''; - } - - } - - /** - * Updates the state of all control/navigation arrows. - */ - function updateControls() { - - var routes = availableRoutes(); - var fragments = availableFragments(); - - // Remove the 'enabled' class from all directions - dom.controlsLeft.concat( dom.controlsRight ) - .concat( dom.controlsUp ) - .concat( dom.controlsDown ) - .concat( dom.controlsPrev ) - .concat( dom.controlsNext ).forEach( function( node ) { - node.classList.remove( 'enabled' ); - node.classList.remove( 'fragmented' ); - } ); - - // Add the 'enabled' class to the available routes - if( routes.left ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - if( routes.right ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - if( routes.up ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - if( routes.down ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - - // Prev/next buttons - if( routes.left || routes.up ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); } ); - - // Highlight fragment directions - if( currentSlide ) { - - // Always apply fragment decorator to prev/next buttons - if( fragments.prev ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - if( fragments.next ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - - // Apply fragment decorators to directional buttons based on - // what slide axis they are in - if( isVerticalSlide( currentSlide ) ) { - if( fragments.prev ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - if( fragments.next ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - } - else { - if( fragments.prev ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - if( fragments.next ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); - } - - } - - } - - /** - * Updates the background elements to reflect the current - * slide. - * - * @param {Boolean} includeAll If true, the backgrounds of - * all vertical slides (not just the present) will be updated. - */ - function updateBackground( includeAll ) { - - var currentBackground = null; - - // Reverse past/future classes when in RTL mode - var horizontalPast = config.rtl ? 'future' : 'past', - horizontalFuture = config.rtl ? 'past' : 'future'; - - // Update the classes of all backgrounds to match the - // states of their slides (past/present/future) - toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) { - - backgroundh.classList.remove( 'past' ); - backgroundh.classList.remove( 'present' ); - backgroundh.classList.remove( 'future' ); - - if( h < indexh ) { - backgroundh.classList.add( horizontalPast ); - } - else if ( h > indexh ) { - backgroundh.classList.add( horizontalFuture ); - } - else { - backgroundh.classList.add( 'present' ); - - // Store a reference to the current background element - currentBackground = backgroundh; - } - - if( includeAll || h === indexh ) { - toArray( backgroundh.querySelectorAll( '.slide-background' ) ).forEach( function( backgroundv, v ) { - - backgroundv.classList.remove( 'past' ); - backgroundv.classList.remove( 'present' ); - backgroundv.classList.remove( 'future' ); - - if( v < indexv ) { - backgroundv.classList.add( 'past' ); - } - else if ( v > indexv ) { - backgroundv.classList.add( 'future' ); - } - else { - backgroundv.classList.add( 'present' ); - - // Only if this is the present horizontal and vertical slide - if( h === indexh ) currentBackground = backgroundv; - } - - } ); - } - - } ); - - // Stop any currently playing video background - if( previousBackground ) { - - var previousVideo = previousBackground.querySelector( 'video' ); - if( previousVideo ) previousVideo.pause(); - - } - - if( currentBackground ) { - - // Start video playback - var currentVideo = currentBackground.querySelector( 'video' ); - if( currentVideo ) { - - var startVideo = function() { - currentVideo.currentTime = 0; - currentVideo.play(); - currentVideo.removeEventListener( 'loadeddata', startVideo ); - }; - - if( currentVideo.readyState > 1 ) { - startVideo(); - } - else { - currentVideo.addEventListener( 'loadeddata', startVideo ); - } - - } - - var backgroundImageURL = currentBackground.style.backgroundImage || ''; - - // Restart GIFs (doesn't work in Firefox) - if( /\.gif/i.test( backgroundImageURL ) ) { - currentBackground.style.backgroundImage = ''; - window.getComputedStyle( currentBackground ).opacity; - currentBackground.style.backgroundImage = backgroundImageURL; - } - - // Don't transition between identical backgrounds. This - // prevents unwanted flicker. - var previousBackgroundHash = previousBackground ? previousBackground.getAttribute( 'data-background-hash' ) : null; - var currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' ); - if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== previousBackground ) { - dom.background.classList.add( 'no-transition' ); - } - - previousBackground = currentBackground; - - } - - // If there's a background brightness flag for this slide, - // bubble it to the .reveal container - if( currentSlide ) { - [ 'has-light-background', 'has-dark-background' ].forEach( function( classToBubble ) { - if( currentSlide.classList.contains( classToBubble ) ) { - dom.wrapper.classList.add( classToBubble ); - } - else { - dom.wrapper.classList.remove( classToBubble ); - } - } ); - } - - // Allow the first background to apply without transition - setTimeout( function() { - dom.background.classList.remove( 'no-transition' ); - }, 1 ); - - } - - /** - * Updates the position of the parallax background based - * on the current slide index. - */ - function updateParallax() { - - if( config.parallaxBackgroundImage ) { - - var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), - verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); - - var backgroundSize = dom.background.style.backgroundSize.split( ' ' ), - backgroundWidth, backgroundHeight; - - if( backgroundSize.length === 1 ) { - backgroundWidth = backgroundHeight = parseInt( backgroundSize[0], 10 ); - } - else { - backgroundWidth = parseInt( backgroundSize[0], 10 ); - backgroundHeight = parseInt( backgroundSize[1], 10 ); - } - - var slideWidth = dom.background.offsetWidth, - horizontalSlideCount = horizontalSlides.length, - horizontalOffsetMultiplier, - horizontalOffset; - - if( typeof config.parallaxBackgroundHorizontal === 'number' ) { - horizontalOffsetMultiplier = config.parallaxBackgroundHorizontal; - } - else { - horizontalOffsetMultiplier = horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) : 0; - } - - horizontalOffset = horizontalOffsetMultiplier * indexh * -1; - - var slideHeight = dom.background.offsetHeight, - verticalSlideCount = verticalSlides.length, - verticalOffsetMultiplier, - verticalOffset; - - if( typeof config.parallaxBackgroundVertical === 'number' ) { - verticalOffsetMultiplier = config.parallaxBackgroundVertical; - } - else { - verticalOffsetMultiplier = ( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 ); - } - - verticalOffset = verticalSlideCount > 0 ? verticalOffsetMultiplier * indexv * 1 : 0; - - dom.background.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px'; - - } - - } - - /** - * Called when the given slide is within the configured view - * distance. Shows the slide element and loads any content - * that is set to load lazily (data-src). - */ - function showSlide( slide ) { - - // Show the slide element - slide.style.display = 'block'; - - // Media elements with data-src attributes - toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src]' ) ).forEach( function( element ) { - element.setAttribute( 'src', element.getAttribute( 'data-src' ) ); - element.removeAttribute( 'data-src' ); - } ); - - // Media elements with children - toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( media ) { - var sources = 0; - - toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( function( source ) { - source.setAttribute( 'src', source.getAttribute( 'data-src' ) ); - source.removeAttribute( 'data-src' ); - sources += 1; - } ); - - // If we rewrote sources for this video/audio element, we need - // to manually tell it to load from its new origin - if( sources > 0 ) { - media.load(); - } - } ); - - - // Show the corresponding background element - var indices = getIndices( slide ); - var background = getSlideBackground( indices.h, indices.v ); - if( background ) { - background.style.display = 'block'; - - // If the background contains media, load it - if( background.hasAttribute( 'data-loaded' ) === false ) { - background.setAttribute( 'data-loaded', 'true' ); - - var backgroundImage = slide.getAttribute( 'data-background-image' ), - backgroundVideo = slide.getAttribute( 'data-background-video' ), - backgroundVideoLoop = slide.hasAttribute( 'data-background-video-loop' ), - backgroundVideoMuted = slide.hasAttribute( 'data-background-video-muted' ), - backgroundIframe = slide.getAttribute( 'data-background-iframe' ); - - // Images - if( backgroundImage ) { - background.style.backgroundImage = 'url('+ backgroundImage +')'; - } - // Videos - else if ( backgroundVideo && !isSpeakerNotes() ) { - var video = document.createElement( 'video' ); - - if( backgroundVideoLoop ) { - video.setAttribute( 'loop', '' ); - } - - if( backgroundVideoMuted ) { - video.muted = true; - } - - // Support comma separated lists of video sources - backgroundVideo.split( ',' ).forEach( function( source ) { - video.innerHTML += ''; - } ); - - background.appendChild( video ); - } - // Iframes - else if( backgroundIframe ) { - var iframe = document.createElement( 'iframe' ); - iframe.setAttribute( 'src', backgroundIframe ); - iframe.style.width = '100%'; - iframe.style.height = '100%'; - iframe.style.maxHeight = '100%'; - iframe.style.maxWidth = '100%'; - - background.appendChild( iframe ); - } - } - } - - } - - /** - * Called when the given slide is moved outside of the - * configured view distance. - */ - function hideSlide( slide ) { - - // Hide the slide element - slide.style.display = 'none'; - - // Hide the corresponding background element - var indices = getIndices( slide ); - var background = getSlideBackground( indices.h, indices.v ); - if( background ) { - background.style.display = 'none'; - } - - } - - /** - * Determine what available routes there are for navigation. - * - * @return {Object} containing four booleans: left/right/up/down - */ - function availableRoutes() { - - var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), - verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); - - var routes = { - left: indexh > 0 || config.loop, - right: indexh < horizontalSlides.length - 1 || config.loop, - up: indexv > 0, - down: indexv < verticalSlides.length - 1 - }; - - // reverse horizontal controls for rtl - if( config.rtl ) { - var left = routes.left; - routes.left = routes.right; - routes.right = left; - } - - return routes; - - } - - /** - * Returns an object describing the available fragment - * directions. - * - * @return {Object} two boolean properties: prev/next - */ - function availableFragments() { - - if( currentSlide && config.fragments ) { - var fragments = currentSlide.querySelectorAll( '.fragment' ); - var hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.visible)' ); - - return { - prev: fragments.length - hiddenFragments.length > 0, - next: !!hiddenFragments.length - }; - } - else { - return { prev: false, next: false }; - } - - } - - /** - * Enforces origin-specific format rules for embedded media. - */ - function formatEmbeddedContent() { - - var _appendParamToIframeSource = function( sourceAttribute, sourceURL, param ) { - toArray( dom.slides.querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( function( el ) { - var src = el.getAttribute( sourceAttribute ); - if( src && src.indexOf( param ) === -1 ) { - el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param ); - } - }); - }; - - // YouTube frames must include "?enablejsapi=1" - _appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' ); - _appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' ); - - // Vimeo frames must include "?api=1" - _appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' ); - _appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' ); - - } - - /** - * Start playback of any embedded content inside of - * the targeted slide. - */ - function startEmbeddedContent( slide ) { - - if( slide && !isSpeakerNotes() ) { - // Restart GIFs - toArray( slide.querySelectorAll( 'img[src$=".gif"]' ) ).forEach( function( el ) { - // Setting the same unchanged source like this was confirmed - // to work in Chrome, FF & Safari - el.setAttribute( 'src', el.getAttribute( 'src' ) ); - } ); - - // HTML5 media elements - toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( el ) { - if( el.hasAttribute( 'data-autoplay' ) && typeof el.play === 'function' ) { - el.play(); - } - } ); - - // Normal iframes - toArray( slide.querySelectorAll( 'iframe[src]' ) ).forEach( function( el ) { - startEmbeddedIframe( { target: el } ); - } ); - - // Lazy loading iframes - toArray( slide.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) { - if( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) { - el.removeEventListener( 'load', startEmbeddedIframe ); // remove first to avoid dupes - el.addEventListener( 'load', startEmbeddedIframe ); - el.setAttribute( 'src', el.getAttribute( 'data-src' ) ); - } - } ); - } - - } - - /** - * "Starts" the content of an embedded iframe using the - * postmessage API. - */ - function startEmbeddedIframe( event ) { - - var iframe = event.target; - - // YouTube postMessage API - if( /youtube\.com\/embed\//.test( iframe.getAttribute( 'src' ) ) && iframe.hasAttribute( 'data-autoplay' ) ) { - iframe.contentWindow.postMessage( '{"event":"command","func":"playVideo","args":""}', '*' ); - } - // Vimeo postMessage API - else if( /player\.vimeo\.com\//.test( iframe.getAttribute( 'src' ) ) && iframe.hasAttribute( 'data-autoplay' ) ) { - iframe.contentWindow.postMessage( '{"method":"play"}', '*' ); - } - // Generic postMessage API - else { - iframe.contentWindow.postMessage( 'slide:start', '*' ); - } - - } - - /** - * Stop playback of any embedded content inside of - * the targeted slide. - */ - function stopEmbeddedContent( slide ) { - - if( slide && slide.parentNode ) { - // HTML5 media elements - toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( el ) { - if( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) { - el.pause(); - } - } ); - - // Generic postMessage API for non-lazy loaded iframes - toArray( slide.querySelectorAll( 'iframe' ) ).forEach( function( el ) { - el.contentWindow.postMessage( 'slide:stop', '*' ); - el.removeEventListener( 'load', startEmbeddedIframe ); - }); - - // YouTube postMessage API - toArray( slide.querySelectorAll( 'iframe[src*="youtube.com/embed/"]' ) ).forEach( function( el ) { - if( !el.hasAttribute( 'data-ignore' ) && typeof el.contentWindow.postMessage === 'function' ) { - el.contentWindow.postMessage( '{"event":"command","func":"pauseVideo","args":""}', '*' ); - } - }); - - // Vimeo postMessage API - toArray( slide.querySelectorAll( 'iframe[src*="player.vimeo.com/"]' ) ).forEach( function( el ) { - if( !el.hasAttribute( 'data-ignore' ) && typeof el.contentWindow.postMessage === 'function' ) { - el.contentWindow.postMessage( '{"method":"pause"}', '*' ); - } - }); - - // Lazy loading iframes - toArray( slide.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) { - // Only removing the src doesn't actually unload the frame - // in all browsers (Firefox) so we set it to blank first - el.setAttribute( 'src', 'about:blank' ); - el.removeAttribute( 'src' ); - } ); - } - - } - - /** - * Returns the number of past slides. This can be used as a global - * flattened index for slides. - */ - function getSlidePastCount() { - - var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); - - // The number of past slides - var pastCount = 0; - - // Step through all slides and count the past ones - mainLoop: for( var i = 0; i < horizontalSlides.length; i++ ) { - - var horizontalSlide = horizontalSlides[i]; - var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); - - for( var j = 0; j < verticalSlides.length; j++ ) { - - // Stop as soon as we arrive at the present - if( verticalSlides[j].classList.contains( 'present' ) ) { - break mainLoop; - } - - pastCount++; - - } - - // Stop as soon as we arrive at the present - if( horizontalSlide.classList.contains( 'present' ) ) { - break; - } - - // Don't count the wrapping section for vertical slides - if( horizontalSlide.classList.contains( 'stack' ) === false ) { - pastCount++; - } - - } - - return pastCount; - - } - - /** - * Returns a value ranging from 0-1 that represents - * how far into the presentation we have navigated. - */ - function getProgress() { - - // The number of past and total slides - var totalCount = getTotalSlides(); - var pastCount = getSlidePastCount(); - - if( currentSlide ) { - - var allFragments = currentSlide.querySelectorAll( '.fragment' ); - - // If there are fragments in the current slide those should be - // accounted for in the progress. - if( allFragments.length > 0 ) { - var visibleFragments = currentSlide.querySelectorAll( '.fragment.visible' ); - - // This value represents how big a portion of the slide progress - // that is made up by its fragments (0-1) - var fragmentWeight = 0.9; - - // Add fragment progress to the past slide count - pastCount += ( visibleFragments.length / allFragments.length ) * fragmentWeight; - } - - } - - return pastCount / ( totalCount - 1 ); - - } - - /** - * Checks if this presentation is running inside of the - * speaker notes window. - */ - function isSpeakerNotes() { - - return !!window.location.search.match( /receiver/gi ); - - } - - /** - * Reads the current URL (hash) and navigates accordingly. - */ - function readURL() { - - var hash = window.location.hash; - - // Attempt to parse the hash as either an index or name - var bits = hash.slice( 2 ).split( '/' ), - name = hash.replace( /#|\//gi, '' ); - - // If the first bit is invalid and there is a name we can - // assume that this is a named link - if( isNaN( parseInt( bits[0], 10 ) ) && name.length ) { - var element; - - // Ensure the named link is a valid HTML ID attribute - if( /^[a-zA-Z][\w:.-]*$/.test( name ) ) { - // Find the slide with the specified ID - element = document.getElementById( name ); - } - - if( element ) { - // Find the position of the named slide and navigate to it - var indices = Reveal.getIndices( element ); - slide( indices.h, indices.v ); - } - // If the slide doesn't exist, navigate to the current slide - else { - slide( indexh || 0, indexv || 0 ); - } - } - else { - // Read the index components of the hash - var h = parseInt( bits[0], 10 ) || 0, - v = parseInt( bits[1], 10 ) || 0; - - if( h !== indexh || v !== indexv ) { - slide( h, v ); - } - } - - } - - /** - * Updates the page URL (hash) to reflect the current - * state. - * - * @param {Number} delay The time in ms to wait before - * writing the hash - */ - function writeURL( delay ) { - - if( config.history ) { - - // Make sure there's never more than one timeout running - clearTimeout( writeURLTimeout ); - - // If a delay is specified, timeout this call - if( typeof delay === 'number' ) { - writeURLTimeout = setTimeout( writeURL, delay ); - } - else if( currentSlide ) { - var url = '/'; - - // Attempt to create a named link based on the slide's ID - var id = currentSlide.getAttribute( 'id' ); - if( id ) { - id = id.replace( /[^a-zA-Z0-9\-\_\:\.]/g, '' ); - } - - // If the current slide has an ID, use that as a named link - if( typeof id === 'string' && id.length ) { - url = '/' + id; - } - // Otherwise use the /h/v index - else { - if( indexh > 0 || indexv > 0 ) url += indexh; - if( indexv > 0 ) url += '/' + indexv; - } - - window.location.hash = url; - } - } - - } - - /** - * Retrieves the h/v location of the current, or specified, - * slide. - * - * @param {HTMLElement} slide If specified, the returned - * index will be for this slide rather than the currently - * active one - * - * @return {Object} { h: , v: , f: } - */ - function getIndices( slide ) { - - // By default, return the current indices - var h = indexh, - v = indexv, - f; - - // If a slide is specified, return the indices of that slide - if( slide ) { - var isVertical = isVerticalSlide( slide ); - var slideh = isVertical ? slide.parentNode : slide; - - // Select all horizontal slides - var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); - - // Now that we know which the horizontal slide is, get its index - h = Math.max( horizontalSlides.indexOf( slideh ), 0 ); - - // Assume we're not vertical - v = undefined; - - // If this is a vertical slide, grab the vertical index - if( isVertical ) { - v = Math.max( toArray( slide.parentNode.querySelectorAll( 'section' ) ).indexOf( slide ), 0 ); - } - } - - if( !slide && currentSlide ) { - var hasFragments = currentSlide.querySelectorAll( '.fragment' ).length > 0; - if( hasFragments ) { - var currentFragment = currentSlide.querySelector( '.current-fragment' ); - if( currentFragment && currentFragment.hasAttribute( 'data-fragment-index' ) ) { - f = parseInt( currentFragment.getAttribute( 'data-fragment-index' ), 10 ); - } - else { - f = currentSlide.querySelectorAll( '.fragment.visible' ).length - 1; - } - } - } - - return { h: h, v: v, f: f }; - - } - - /** - * Retrieves the total number of slides in this presentation. - */ - function getTotalSlides() { - - return dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ':not(.stack)' ).length; - - } - - /** - * Returns the slide element matching the specified index. - */ - function getSlide( x, y ) { - - var horizontalSlide = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR )[ x ]; - var verticalSlides = horizontalSlide && horizontalSlide.querySelectorAll( 'section' ); - - if( verticalSlides && verticalSlides.length && typeof y === 'number' ) { - return verticalSlides ? verticalSlides[ y ] : undefined; - } - - return horizontalSlide; - - } - - /** - * Returns the background element for the given slide. - * All slides, even the ones with no background properties - * defined, have a background element so as long as the - * index is valid an element will be returned. - */ - function getSlideBackground( x, y ) { - - // When printing to PDF the slide backgrounds are nested - // inside of the slides - if( isPrintingPDF() ) { - var slide = getSlide( x, y ); - if( slide ) { - var background = slide.querySelector( '.slide-background' ); - if( background && background.parentNode === slide ) { - return background; - } - } - - return undefined; - } - - var horizontalBackground = dom.wrapper.querySelectorAll( '.backgrounds>.slide-background' )[ x ]; - var verticalBackgrounds = horizontalBackground && horizontalBackground.querySelectorAll( '.slide-background' ); - - if( verticalBackgrounds && verticalBackgrounds.length && typeof y === 'number' ) { - return verticalBackgrounds ? verticalBackgrounds[ y ] : undefined; - } - - return horizontalBackground; - - } - - /** - * Retrieves the speaker notes from a slide. Notes can be - * defined in two ways: - * 1. As a data-notes attribute on the slide
- * 2. As an