ECDSA_Signature_Operation::ECDSA_Signature_Operation(const ECDSA_PrivateKey& ecdsa) :
base_point(ecdsa.domain().get_base_point()),
order(ecdsa.domain().get_order()),
x(ecdsa.private_value()),
mod_order(order)
{
}
std::unique_ptr<PK_Ops::Signature>
make_openssl_ecdsa_sig_op(const ECDSA_PrivateKey& key, const std::string& params)
{
const int nid = OpenSSL_EC_nid_for(key.domain().get_oid());
if(nid < 0)
{
throw Lookup_Error("OpenSSL ECDSA does not support this curve");
}
return std::unique_ptr<PK_Ops::Signature>(new OpenSSL_ECDSA_Signing_Operation(key, params));
}