On Thu, Oct 24, 2013 at 6:30 PM, Johannes Bauer <dfnsonfsdu...@gmx.de> wrote: > On 24.10.2013 09:07, Chris Angelico wrote: >> AES is a stream cipher; > > No, it is definitely not! It's a block cipher! However, since he uses > CFB mode of operation, it behaves like a stream cipher.
Sorry! Quite right. What I meant was, it behaves differently based on its current state. The SHA256 of "Hello, world!" is 315f5b...edd3 no matter how many times you calculate it; but the AES-encrypted text is going to change based on the previously-encrypted text. Hence the need to either, as stated in your other email, reset the internal state, or, as stated in my previous one, treat it as a stream. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
