SIGBLOB_LEN
u_char digest[SSH_DIGEST_MAX_LENGTH], sigblob[SIGBLOB_LEN];
explicit_bzero(sigblob, SIGBLOB_LEN);
BN_bn2bin(sig_r, sigblob + SIGBLOB_LEN - INTBLOB_LEN - rlen);
BN_bn2bin(sig_s, sigblob + SIGBLOB_LEN - slen);
(ret = sshbuf_put_string(b, sigblob, SIGBLOB_LEN)) != 0)
if (len != SIGBLOB_LEN) {