I have seen the Diamond2 algorithm in the dlock2 package, with its predecessors MPJ, MPJ2. This a thesis by Michael Paul Johnson for is Master of Science degree (1989), and a free softwar (date: 12/21/1995). Schneier's Applied Cryptography doesn't say anything about MPJ or Diamond. What is its strength? Jean-Paul Kroepfli ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~- Jean-Paul et Micheline Kroepfli (our son: Nicolas and daughter: Celine) eMail: JeanPaul.Kroepfli@utopia.fnet.fr Also Compuserve and MSNetwork Phone: +33 81 55 52 59 (F) PostMail: F-25640 Breconchaux (France) or: +41 21 843 27 36 (CH) or: CP 138, CH-1337 Vallorbe Fax: +33 81 55 52 62 (Switzerland) Zephyr(r) : InterNet Communication and Commerce, Security and Cryptography consulting PGP Fingerprint : 19 FB 67 EA 20 70 53 89 AF B2 5C 7F 02 1F CA 8F "The InterNet is the most open standard since air for breathing"