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Key sizes paper published

daemon@ATHENA.MIT.EDU (P.J. Ponder)
Wed Nov 17 11:07:11 1999

Date: Wed, 17 Nov 1999 11:05:02 -0500 (EST)
From: "P.J. Ponder" <ponder@freenet.tlh.fl.us>
Reply-To: "P.J. Ponder" <ponder@freenet.tlh.fl.us>
To: cryptography@c2.net
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Bruce Schneier noted in the latest 'Crypto-Gram' a paper on key sizes
written by Arjen Lenstra and Eric Verheul:

   http://www.cryptosavvy.com

The paper explains the methods used to arrive at various estimates.

One interesting note is the expected weakness of the US Digital Signature
Standard (DSS) - it is recommended for commercial applications only until
about 2002 (for the field size) and about 2013 for hashes.  They also note
that NIST is working on a replacement of the DSS with longer key sizes.

The Crypto-Gram newsletter is at: http://www.counterpane.com/labs.html




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