Hi Scott, Thanks.
Use the Schoof program from the miracl library to
I've been working with Crypto++ for years, so I'd like to stay with Wei's library. However, I may have to adapt to overcome...
You can also play with ECB (Elliptic Curve Builder):
This may be what I need. The prime p over GF(p) has to be greater than 64 bits. I'm not sure at this point if the cipher text will be too large. I will write to the author, and ask him/her to change the Error to a Warning; and then continue the calculation of the parameters. Jeff On 11/8/06, Scott Guthery <[EMAIL PROTECTED]> wrote:
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
