sshkey_from_blob_internal
if (sshkey_from_blob_internal(ca, &key->cert->signature_key, 0) != 0) {
r = sshkey_from_blob_internal(b, keyp, 1);
return sshkey_from_blob_internal(b, keyp, 1);
r = sshkey_from_blob_internal(b, keyp, 1);
static int sshkey_from_blob_internal(struct sshbuf *buf,