feat(ed25519): ios, macos implementation of ed25519

base-asymmetric-encryption/base_asymmetric_encryption.podspec

@@ -12,6 +12,7 @@ Pod::Spec.new do |spec|
     spec.osx.deployment_target = '12.0'
     spec.tvos.deployment_target = '13.0'
     spec.watchos.deployment_target = '8.0'
+    spec.dependency 'IOHKCryptoKit', '1.0.0'
     spec.dependency 'IOHKRSA', '1.0.0'
     spec.dependency 'IOHKSecureRandomGeneration', '1.0.0'
 

base-asymmetric-encryption/build.gradle.kts

@@ -123,6 +123,11 @@ kotlin {
                 packageName = "IOHKSecureRandomGeneration1"
                 source = path(project.file("../iOSLibs/IOHKSecureRandomGeneration"))
             }
+
+            pod("IOHKCryptoKit") {
+                version = "1.0.0"
+                source = path(project.file("../iOSLibs/IOHKCryptoKit"))
+            }
         }
     }
 

base-asymmetric-encryption/src/commonMain/kotlin/io/iohk/atala/prism/apollo/utils/KMMEdPrivateKey.kt

@@ -1,3 +1,3 @@
 package io.iohk.atala.prism.apollo.utils
 
-expect class KMMEdPrivateKey
+public expect class KMMEdPrivateKey

base-asymmetric-encryption/src/commonMain/kotlin/io/iohk/atala/prism/apollo/utils/KMMEdPublicKey.kt

@@ -1,3 +1,3 @@
 package io.iohk.atala.prism.apollo.utils
 
-expect class KMMEdPublicKey
+public expect class KMMEdPublicKey

base-asymmetric-encryption/src/iosMain/kotlin/io/iohk/atala/prism/apollo/utils/KMMEdKeyPair.kt

@@ -4,15 +4,11 @@ actual class KMMEdKeyPair actual constructor(
     actual val privateKey: KMMEdPrivateKey,
     actual val publicKey: KMMEdPublicKey
 ) {
-    init {
-        // TODO: To be investigated
-        throw NotImplementedError("Ed25519 is yet to be implemented in iOS")
-    }
 
     actual companion object : Ed25519KeyPairGeneration {
         override fun generateEd25519KeyPair(): KMMEdKeyPair {
-            // TODO: To be investigated
-            throw NotImplementedError("Ed25519 is yet to be implemented in iOS")
+            val privateKey = KMMEdPrivateKey()
+            return KMMEdKeyPair(privateKey, privateKey.publicKey())
         }
     }
 }

base-asymmetric-encryption/src/iosMain/kotlin/io/iohk/atala/prism/apollo/utils/KMMEdPrivateKey.kt

@@ -1,8 +1,33 @@
 package io.iohk.atala.prism.apollo.utils
 
-actual class KMMEdPrivateKey {
-    init {
-        // TODO: To be investigated
-        throw NotImplementedError("Ed25519 is yet to be implemented in iOS")
+import cocoapods.IOHKCryptoKit.Ed25519
+import kotlinx.cinterop.ObjCObjectVar
+import kotlinx.cinterop.alloc
+import kotlinx.cinterop.memScoped
+import kotlinx.cinterop.ptr
+import kotlinx.cinterop.value
+import platform.Foundation.NSError
+
+public actual class KMMEdPrivateKey(val raw: ByteArray = Ed25519.createPrivateKey().toByteArray()) {
+
+    @Throws(RuntimeException::class)
+    public fun sign(data: ByteArray): ByteArray {
+        memScoped {
+            val errorRef = alloc<ObjCObjectVar<NSError?>>()
+            val result = Ed25519.signWithPrivateKey(raw.toNSData(), data.toNSData(), errorRef.ptr)
+            errorRef.value?.let { throw RuntimeException(it.localizedDescription()) }
+            return result?.toByteArray() ?: throw RuntimeException("Null result")
+        }
+    }
+
+    @Throws(RuntimeException::class)
+    public fun publicKey(): KMMEdPublicKey {
+        memScoped {
+            val errorRef = alloc<ObjCObjectVar<NSError?>>()
+            val result = Ed25519.publicKeyWithPrivateKey(raw.toNSData(), errorRef.ptr)
+            errorRef.value?.let { throw RuntimeException(it.localizedDescription()) }
+            val publicRaw = result?.toByteArray() ?: throw RuntimeException("Null result")
+            return KMMEdPublicKey(publicRaw)
+        }
     }
 }

base-asymmetric-encryption/src/iosMain/kotlin/io/iohk/atala/prism/apollo/utils/KMMEdPublicKey.kt

@@ -1,8 +1,22 @@
 package io.iohk.atala.prism.apollo.utils
 
-actual class KMMEdPublicKey {
-    init {
-        // TODO: To be investigated
-        throw NotImplementedError("Ed25519 is yet to be implemented in iOS")
+import cocoapods.IOHKCryptoKit.Ed25519
+import kotlinx.cinterop.ObjCObjectVar
+import kotlinx.cinterop.alloc
+import kotlinx.cinterop.memScoped
+import kotlinx.cinterop.ptr
+import kotlinx.cinterop.value
+import platform.Foundation.NSError
+
+public actual class KMMEdPublicKey(val raw: ByteArray) {
+
+    @Throws(RuntimeException::class)
+    public fun verify(data: ByteArray, sig: ByteArray): Boolean {
+        memScoped {
+            val errorRef = alloc<ObjCObjectVar<NSError?>>()
+            val result = Ed25519.verifyWithPublicKey(raw.toNSData(), sig.toNSData(), data.toNSData(), errorRef.ptr)
+            errorRef.value?.let { throw RuntimeException(it.localizedDescription()) }
+            return result?.boolValue ?: throw RuntimeException("Null result")
+        }
     }
 }

iOSLibs/IOHKCryptoKit/IOHKCryptoKit.podspec

@@ -0,0 +1,36 @@
+#
+# Be sure to run `pod lib lint IOHKSecureRandomGeneration.podspec' to ensure this is a
+# valid spec before submitting.
+#
+# Any lines starting with a # are optional, but their use is encouraged
+# To learn more about a Podspec see https://guides.cocoapods.org/syntax/podspec.html
+#
+
+Pod::Spec.new do |s|
+    s.name             = 'IOHKCryptoKit'
+    s.version          = '1.0.0'
+    s.summary          = 'IOHKCryptoKit contains Ed25519, X25519 CryptoKit functionalities.'
+
+    # This description is used to generate tags and improve search results.
+    #   * Think: What does it do? Why did you write it? What is the focus?
+    #   * Try to keep it short, snappy and to the point.
+    #   * Write the description between the DESC delimiters below.
+    #   * Finally, don't worry about the indent, CocoaPods strips it!
+
+    s.description      = <<-DESC
+        IOHKCryptoKit contains Ed25519, X25519 CryptoKit functionalities.
+    DESC
+
+    s.homepage         = 'https://github.com/input-output-hk/atala-prism-apollo'
+    s.author           = { 'Gonçalo Frade' => '[email protected]' }
+    s.source           = { :git => 'https://github.com/input-output-hk/atala-prism-apollo.git', :tag => s.version.to_s }
+    s.swift_version = '5.7'
+    s.cocoapods_version = '>= 1.10.0'
+
+    s.ios.deployment_target = '13.0'
+    s.osx.deployment_target  = '12.0'
+    s.tvos.deployment_target = '13.0'
+    s.watchos.deployment_target = '8.0'
+
+    s.source_files = 'IOHKCryptoKit/**/*.swift'
+end