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 proof of concept, but speed would be important. I've thought about just Xor'ing with a constant if I cannot find a decent stream cipher. ...
I want to secure the communication of a TCP-based program using a shared passphrase/key. The easiest way to do that without having to deal with block size, padding, ... is to directly use a stream cipher. Doing that way, the amount of data is not changed between clear and encrypted data and the modification is trivial. Using only a stre...
I have an idea for encryption that I could program fairly easily to encrypt some local text file. Given that my approach is novel, and does not use any of the industry standard encryption techniques, would I be able to test the strength of my encryption using 'cracker' apps or suchlike? Or do all those tools rely on advanced knowledge ...