DerEncodeDSASignature
return (DerEncodeDSASignature(rawdata, signature));
extern KMF_RETURN DerEncodeDSASignature(KMF_DATA *, KMF_DATA *);
ret = DerEncodeDSASignature(&signed_data, &signature);
ret = DerEncodeDSASignature(&signed_data, &signature);