CAs as trapdoor on way functions

2000-05-07 Thread Simon Aronson
Does anyone know if any research has been done into the use of cellular automata as one way functions? or even into the reversing of CAs? [People have tried using Cellular Automata for all sorts of cryptographic purposes, never too successfully. --Perry]

RE: Java, Crypto and Speed

2000-06-30 Thread Simon Aronson
Yes, I have, It is pretty fast. Diffie Hellman Applets can be found at http://www.rdg.ac.uk/~sip99sma (The CGI is REALLY slow though - am working on that, perl is not good for BigIntegers) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gary Ellison Sent:

Elgamal

2000-07-19 Thread Simon Aronson
In an implementation of the ElGamal cryptosystem, is it acceptable to always use the same prime and generator for every transmission? Or should a new prime/generator pair be chosen for each communication? Also does anyone know of where I can find suitable parameters to test the system with ? tha