In message <010845d8$0$20638$c3e8da3 at news.astraweb.com>, 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