An addition to ProjectTox-Core for saving and loading encrypted copies of the Tox Messenger using scrypt-jane. It's written in C and tries to be simple.
/* "Profile" Save Format
* ==============
*
* bytes name type purpose
* ----------------------------------------
* -- block one [unencrypted] --
* 4 magic uint8 magic, 6c:69:62:65 "libe"
* 8 saved uint64 unix timestamp from when the profile was last used
* 2 namelen uint16 length of name
* varies name uint8 name of profile, UTF-8 preferably
* 12 scryptvars uint32 N,r,p variables for scrypt - in this order
* 24 salt uint8 the salt for scrypt
* 24 nonce uint8 the nonce for nacl
* 8 blocklen uint64 the length of the encrypted block
* -- block two [encrypted] --
* 32 0 uint8 crypto_secretbox_ZEROBYTES
* 4 magic uint8 magic, 72:74:61:73 "rtas"
* varies profile uint8 the messenger data - this goes to tox_load()
* -- block three+ --
* for future extensions...
*/
As can be seen in tox_data.h
It's also suggested that .tox is used as the extension for these files (e.g. whatever.tox).
- Add tox_data.c & submodules/scrypt-jane/scrypt-jane.c to your project.
- Add submodules/scrypt-jane/ to your search paths.
- Add SCRYPT_SALSA & SCRYPT_SHA256 to your defines.
- Add -no-integrated-as to your CFLAGS if you use clang.
tox_data *profile = data_init_load("/home/user/.config/tox/whatever.tox");
data_unlock(profile, "password1");
uint8_t *buffer;
size_t size = data_read_messenger(profile, &buffer);
tox_load(tox, buffer, size);- Endianess & padding haven't been tackled yet here or in ToxCore. Which means that these saves will be fine among similar machines, but good luck going from your laptop to your raspberry pi.