get_hostkey_public_by_index
struct sshkey *get_hostkey_public_by_index(int, struct ssh *);
if ((key = get_hostkey_public_by_index(keyid, ssh)) == NULL)
} else if ((key = get_hostkey_public_by_index(keyid, ssh)) != NULL &&
(key_pub = get_hostkey_public_by_index(ndx, ssh)) == NULL) {
key = get_hostkey_public_by_index(i, ssh);