SRTP: Support of AES-256
Issue generated from Tuleap's migration script. Originally submitted by: Guillaume Roguez (guillaume)
The IETF has approved the RFC 6188 to support bigger cryptographic key length into SRPT protocol.
This include AES-192 and AES-256 encryptions.
AES-256 doesn't provide much security than AES-128 if we limit our possible threats to the brut-force attack.
But on some other kind of attacks (key dependency, quantum computing, ...) this could be interesting
to support these crypto-protocols.