Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site allegra.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!don From: don@allegra.UUCP (Don Mitchell) Newsgroups: net.crypt Subject: bad S boxes Message-ID: <4956@allegra.UUCP> Date: Sat, 17-Aug-85 15:18:28 EDT Article-I.D.: allegra.4956 Posted: Sat Aug 17 15:18:28 1985 Date-Received: Tue, 20-Aug-85 05:42:12 EDT Organization: AT&T Bell Laboratories, Murray Hill Lines: 5 To answer various people's questions, consider the S boxes in DES. They take six input bits and give four output bits. I understand that Shamir has found that there are strong correlations between the xor of the four output bits and simple functions of the input bits.