sshkey_xmss_deserialize_enc_key
(r = sshkey_xmss_deserialize_enc_key(k, b)) != 0)
if ((r = sshkey_xmss_deserialize_enc_key(k, b)) != 0 ||
int sshkey_xmss_deserialize_enc_key(struct sshkey *, struct sshbuf *);