At 1:02 PM 8/20/96 -0700, Jeff Davis wrote:

I've read Blaze and diffie's paper on Semetric Key Length. I'm currious how semetric key length correlates to public key cryptography length. Does public key length have to be much longer, (assuming the algorithms are strong), to provide the same level of security as a shorter semetric key? TIA

According to Applied Cryptography V2, Symmetric and Public-key Key Lengths with Similar Resistances to Brute-Force Attacks Symmetric Public-key Key Length Key Length 56 bits 348 bits 64 bits 512 bits 80 bits 768 bits 112 bits 1792 bits 128 bits 2304 bits Regards - Bill ------------------------------------------------------------------------- Bill Frantz | Cave ab homine unius lebri | Periwinkle -- Consulting (408)356-8506 | [Beware the man of one | 16345 Englewood Ave. frantz@netcom.com | book] - Anonymous Latin | Los Gatos, CA 95032, USA