In message <3b5643635f.3635f3b564@xxxxxxxxxxxxx>, Benyamin Nasution writes: > >I have the same thought regarding dynamic techniques, in this case the >encryption. >If you use a well known mathemtical formula, I think passive attackers >may still have a chance to challenge it. > >What if the encryption algorithm is made dynamic? >It means that each peer can update and upgrade peer's algorithm >whenever required. (a) this is off-topic for the IETF mailing list (b) cryptography is a branch of applied mathematics, with a rich literature. I suggest you consult it first, or at least ask your question on a cryptography mailing list or newsgroup. Start at http://www.faqs.org/faqs/cryptography-faq/. (Well, it's dated at this point, but it will give you a hint of the flavor of modern cryptography.) --Steven M. Bellovin, http://www.cs.columbia.edu/~smb _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf