ecdsa_sign_raw
ATTRIBUTE_WARN_UNUSED_RET int ecdsa_sign_raw(struct ec_sign_context *ctx, const u8 *input, u8 inputlen, u8 *sig, u8 siglen, const u8 *nonce, u8 noncelen);
ret = ecdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, NULL, 0); EG(ret, err);
if(ecdsa_sign_raw(&sig_ctx, digest, digestlen, sig, siglen, nonce, noncelen)){