sshkey_write
if ((r = sshkey_write(key, f)) != 0)
if ((r = sshkey_write(idlist->keys[i], stdout)) != 0) {
if ((r = sshkey_write(sign_key, stdout)) == 0)
if ((r = sshkey_write(k, stdout)) == 0)
if ((r = sshkey_write(prv, stdout)) != 0)
(void) sshkey_write(keys[i], stdout); /* XXX check */
if (r >= 0 && sshkey_write(key, stdout) == 0)
int sshkey_write(const struct sshkey *, FILE *);