Today I thought: well, even if there is great suspicion on RDRAND implementation of NIST SP 800-90A, it is still a hardware implementation of pseudo-random number generator (PRNG) that must be good...

Does anyone have a good implementation of a stream cipher written in pure portable C? I am not terribly concerned with the strength of the cipher at this point in time because it is only for a proo...

I've been playing around with cryptocat, which is an interesting online chat service that allows you to encrypt your messages with a key, so that only people with the same key can read your message...