You should just be able to create an ECDSA_SIG structure using: ECDSA_SIG *mysig;
if(!(mysig = ECDSA_SIG_new())) goto err; And then simply copy your r and s values directly into the ECDSA_SIG structure (assuming they are BIGNUMs): if(!BN_copy(mysig->r, r)) goto err; if(!BN_copy(mysig->s, s)) goto err; Finally you should be able to call ECDSA_do_verify. Matt On 21 December 2012 09:26, jeetendra gangele <gangele...@gmail.com> wrote: > Hi all, > > I am having a raw data(signature to verify the signed data). > I used ECDSA_verify function and its failing because by ram signature > not having encoding details. > I removed these details while signing the data I copied r and s buffer > of ECDSA_SIG structure into the buffer and then that buffer I am using > as verification. > Its failing . > When I used the d2i_ECDSA_SIG to ram unsiged char * to ECDSA_SIG > object that also failing. > anyway internall ECDSA_verify is callling the ECDSA_do_verify. > Can any body guide me given the raw data signature or two BIGNUM(r and > s of ECDSA_SIG object) can I create the Actaul signature object which > can be used ofr verification? > > > > Thanks > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager majord...@openssl.org >
