On Fri, 17 Oct 2008 22:45:19 +1300, Lawrence D'Oliveiro wrote: > In message <[EMAIL PROTECTED]>, Steven D'Aprano > wrote: > >> On Fri, 17 Oct 2008 20:51:37 +1300, Lawrence D'Oliveiro wrote: >> >>> ... why do you say that xoring random data with other random data >> produces less randomness than you started with? > > blocksize <= number_of_blocks * blocksize
I must be thick, because that looks like a non sequitor to me. I don't see the relevance. Of course, that's just another way of saying that: 1 <= number_of_blocks and I don't see how this relates to whether xoring random data with other random data decreases the randomness available. >>> c1 = os.urandom(1) >>> c2 = os.urandom(1) >>> c3 = chr( ord(c1)^ord(c2) ) Is it your contention that c3 is more predictable than c1 or c2? If so, why? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
