On 14 December 2012 20:18, Matt Caswell (fr...@baggins.org) <fr...@baggins.org> wrote: > > > On 14 December 2012 14:20, jeetendra gangele <gangele...@gmail.com> wrote: >> >> it looks very odd loading of public key during sign operation. >> Ok tell me one thing I can load any valid point on the curve during sign. > > > An ECDSA sign operates on the curve and associated parameters, the private > key, and the message, and outputs two values (which are just numbers) r and > s. No points on the curve are provided as input or received as output > (although they are used internally). > > What I have recommended to you is that you fill in both the private and > public key in the EC_KEY object so that an EC_KEY_check_key call passes. > This is not loading "any valid point on the curve"...it must be the public > key for the associated private key, or EC_KEY_check_key will not pass. As I > said in one of my first emails, it is straight forward to find the public > key given the private key. > Here I wont agree because suppose if I loaded all the curve parameters and try to load public key which wont lie on the curve,Its failing. > >> >> and whn I verify the signed message i should be able to verify with >> the other valid public key? > > > When verifying you will be able to verify with the public key that > corresponds to the private key used originally to sign the message. This I understand....
> > Matt > -- ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
