olm/lib
Richard van der Hoff 0c462cff11 Fix Ed25519 keypair generation
Ed25519 private keys, it turns out, have 64 bytes, not 32.

We were previously generating only 32 bytes (which is all that is required to
generate the public key), and then using the public key as the upper 32 bytes
when generating the per-message session key. This meant that everything
appeared to work, but the security of the private key was severely compromised.

By way of fixes:

 * Use the correct algorithm for generating the Ed25519 private key, and store
   all 512 bits of it.

 * Update the account pickle format and refuse to load the old format (since we
   should consider it compromised).

 * Bump the library version, and add a function to retrieve the library
   version, so that applications can verify that they are linked against a
   fixed version of the library.

 * Remove the curve25519_{sign, verify} functions which were unused and of
   dubious quality.
2016-09-01 13:35:23 +01:00
..
crypto-algorithms Merge commit 'c61e5359cb454ae20c0b7b057c3a7b53e2beefd6' as 'lib/crypto-algorithms' 2015-02-26 16:43:06 +00:00
curve25519-donna switch from /usr/bin/python to /usr/bin/env python. this doesn't help folks whose python path points at python3 (e.g. Arch linux) though, but I see no choice than they have to change the shebangs, as we do on Synapse. For instance, OSX doesn't have a python2 symlink, otherwise we'd use /usr/bin/env python2 shebang. 2015-11-01 13:05:51 +00:00
ed25519 Add functions for signing and verifying messages using curve25519 keys 2015-03-03 11:18:07 +00:00
curve25519-donna.h Use header files where possible 2015-12-03 17:08:04 +00:00