Use the Schoof program from the miracl library to calculate your own curves:
http://indigo.ie/~mscott/ You can also play with ECB (Elliptic Curve Builder): http://www.ellipsa.net/ Cheers, Scott -----Original Message----- From: Jeffrey Walton [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 08, 2006 1:26 PM To: Crypto++ Subject: ECC ECIES and Smaller Curves Hi All, The smallest curves available are 112 bits (GF(p)) and 113 bits (GF(2)). I'd like to go even smaller - possibly down to 80 or 60 bits. Has anyone attempted this before? Also, Is it possible to define my curve based on a base class? The Certicom curves appear to be defined in eccrypto.cpp based on OIDs (among other things). I don't think there is a 'NULL' OID per se, so is this against the spirit of ECC and using Wei's Library? Finally, is there a 'RSA equivalent size' based on a smaller curve. The documentation I have read is 160 bit ECC ~= 1024 bit RSA. Jeff
