sshkey_to_certified
if ((r = sshkey_to_certified(key)) != 0 ||
if ((r = sshkey_to_certified(private)) != 0) {
if ((r = sshkey_to_certified(public)) != 0)
if ((r = sshkey_to_certified(privkey)) != 0) {
if ((r = sshkey_to_certified(ret)) != 0 ||
int sshkey_to_certified(struct sshkey *);