Forwarded by: "Jay D. Dyson" <jdysonat_private> -----BEGIN PGP SIGNED MESSAGE----- Courtesy of Cryptography List. Busy day. - ---------- Forwarded message ---------- Date: Fri, 3 Aug 2001 10:50:34 -0400 From: "R. A. Hettinga" <rahat_private> To: Digital Bearer Settlement List <dbsat_private>, dcsbat_private, cryptographyat_private Subject: NSA's new mode of operation broken in less than 24 hours - --- begin forwarded text Reply-To: <paulo.barretoat_private> From: "Paulo S. L. M. Barreto" <paulo.barretoat_private> To: <coderpunksat_private> Subject: NSA's new mode of operation broken in less than 24 hours Date: Thu, 2 Aug 2001 22:40:32 -0300 Sender: owner-coderpunksat_private NSA has recently convinced NIST to include a new algorithm - something they dubbed "Double Counter" mode after 18 months of development - for consideration as a possible standard mode of operation for the AES. It's described at <http://csrc.nist.gov/encryption/modes/proposedmodes/>, but I wouldn't bother reading it now had I not done it already. The new mode seems to have been reduced to bits by Phillip Rogaway, David Wagner and others. Could it be that the NSA is losing its proverbial cryptologic skills? For one can't help but conclude that, if they acted in good faith to provide a useful mode, then they did a very poor job, and if they acted otherwise, then they quite underestimate current public knowledge in the area. Paulo Barreto. - --- end forwarded text - -- - ----------------- R. A. Hettinga <mailto: rahat_private> The Internet Bearer Underwriting Corporation <http://www.ibuc.com/> 44 Farquhar Street, Boston, MA 02131 USA "... however it may deserve respect for its usefulness and antiquity, [predicting the end of the world] has not been found agreeable to experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire' - --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to majordomoat_private -----BEGIN PGP SIGNATURE----- Version: 2.6.2 Comment: See http://www.treachery.net/~jdyson/ for current keys. iQCVAwUBO2rxq7lDRyqRQ2a9AQGzKwP+Jysc0CnpAoclenz3Kzux0mvXEDdWzrVJ 1Nh/OwPjylIPfbP2jgaOj2aNkzRyUOgBQFliuZ4Ob6Ay+wLOlJ4mlICCGHP/k7jn txUhB0eFNQdh40RL8VnBRRNLc7oy6hYn5+5QP2XhXzT2ZW1KwOflSKaqACvlUjg3 TJqH6NoPDRw= =mlt6 -----END PGP SIGNATURE----- - ISN is currently hosted by Attrition.org To unsubscribe email majordomoat_private with 'unsubscribe isn' in the BODY of the mail.
This archive was generated by hypermail 2b30 : Mon Aug 06 2001 - 02:59:40 PDT