At 9:29 PM 9/10/96 +0200, Germano Caronni wrote:

Just a short note. The DH patent (#4200770), as held by Cylink expires at the 29th of april '97. Afterwards DH enters the public domain. That's a certain argument for using DH key exchange. RSA will go into the public domain somewhen in 2002, if I remember correctly.

The US patent for RSA expires September 20, 2000 according to Applied Cryptography Second Edition, p474. ------------------------------------------------------------------------- Bill Frantz | "Lone Star" - My personal | Periwinkle -- Consulting (408)356-8506 | choice for best movie of | 16345 Englewood Ave. frantz@netcom.com | 1996 | Los Gatos, CA 95032, USA