Hi, I've started playing around with doing encryption with telnet/telnetd again (I'm cheating and using the rsa/prime number code from pgp-2.0) and I'm stuck on what to use as the encryption for the actual flow of data. (hmm...if it works for telnet/telnetd, it can probably be made to work for the other r-daemons too :-) The idea is telnet and telnetd each choose an rsa pub & sec key, then use rsa to encode a key for the encryption scheme which both ends send and then use that for the base of the link encryption. Whatever I use for encryption of the session data has to work quickly and efficiently and I've got little idea about what to use/how to and would like some opinions on what would make a good choice. Any suggestions ? (Xor seems a possibility but straight Xor is very easy to break). I hope I'm not duplicating work that has already been done :) cheers, Darren