Can anybody guide me how can I generate the digital signature of 56 bytes for ecdsa. I am using the curve NID_secp224r1. Thanks jeetendra
On 17 December 2012 09:26, jeetendra gangele <gangele...@gmail.com> wrote: > Actaully I was trying to generate the signature of lenght 56 bytes but > its failing. > When I check the code it said lenght of the sig should not lessa than 56. > can anybody help me how can I generate the signature of lenght 56 bytes?. > > > On 14 December 2012 19:11, Matt Caswell (fr...@baggins.org) > <fr...@baggins.org> wrote: >> >> On 14 December 2012 13:36, jeetendra gangele <gangele...@gmail.com> wrote: >>> >>> Ok, >>> So is there any way after setting these parameters I can get the >>> public key(point) on curve.? >> >> >> Setting the parameters just gets you a curve, not a private/public key pair. >> To create a private/public key pair create an EC_KEY object (passing in the >> curve as a parameter), and then call EC_KEY_generate_key. Then you can get >> the public key from the EC_KEY object. >> >>> after setting the curve parameter I can ask for point in the curve >>> there is one API I have seen right? >>> GetPublicKey. >>> Can u do that from command line? >>> >> As far as I know you can't use custom curves from the command line - but I >> am not an expert on the command line tool so others on this list may be able >> to answer that. >> >> Matt ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
