From owner-freebsd-security Mon Sep 17 20:39:48 2001 Delivered-To: freebsd-security@freebsd.org Received: from silby.com (cb34181-a.mdsn1.wi.home.com [24.14.173.39]) by hub.freebsd.org (Postfix) with ESMTP id DB9A637B401 for ; Mon, 17 Sep 2001 20:39:41 -0700 (PDT) Received: (qmail 19100 invoked by uid 1000); 18 Sep 2001 03:39:39 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 18 Sep 2001 03:39:39 -0000 Date: Mon, 17 Sep 2001 22:39:39 -0500 (CDT) From: Mike Silbersack To: Michael Richards Cc: , Subject: Re: US Congress already discussing bans on strong crypto In-Reply-To: <3BA6BCBE.0001F5.04743@frodo.searchcanada.ca> Message-ID: <20010917223618.A19035-100000@achilles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Mon, 17 Sep 2001, Michael Richards wrote: > Your sediments echo mine about RSA and peer review. They can't really > stuff the RSA cat back into the bag. As for the change NSA did make > to the DES, I was not at all aware of this. I always assumed they had > weakened it. When did this info become public knowledge? > > -Michael The history of DES (including the design of the sboxes) is in "Applied Cryptography", "The Code Book", and presumably many other crypto books. I recommend that you pick up a copy of The Code Book; it's an informative and enjoyable read. To be more specific, Applied Cryptography lists Differential Cryptanalysis as being public found in 1990. So, that puts the IBM researchers / NSA only 14 years ahead of the rest of the world. Good thing they decided to protect against the attack rather than weaken DES to it. Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message