Thanks. Refer to the sample test given in PKV.txt in http://csrc.nist.gov/cryptval/dss/ecdsatestvectors.zip. I tried EC_KEY_check_key() against six NIST recommended EC curves P-192 P-224 K-163 K-233 B-163 B-233. For curves P-192 P-224 B-163 B-233 the function gives correct results. However, for B-163 and B-233, some invalid public keys are wrongly evaluated to true. Those invalid public keys are exactly the ones marked "(2 - Added PT of order 2)". Is that a bug of implementation of EC_KEY_check_key()? Any ideas will be greatly appreciated. Thanks.
-Xiaoyu -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nils Larsch Sent: Friday, March 02, 2007 2:24 PM To: openssl-users@openssl.org Subject: Re: Public key validation for ECDSA Xiaoyu Ruan wrote: > Hi dear fellows, > > > > I would like to know if there is any function(s) in OpenSSL that handles > public key validation for ECDSA. > > Given a point (public key) and a curve, I would like to test if this > point is a valid public key for this curve. have a look at EC_KEY_check_key() in crypto/ec/ec_key.c Cheers, Nils ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
