sshkey_load_private
int sshkey_load_private(const char *, const char *, struct sshkey **, char **);
r = sshkey_load_private(identity_file, "", &private, &comment);
r = sshkey_load_private(identity_file, old_passphrase,
if ((r = sshkey_load_private(identity_file, "",
if ((r = sshkey_load_private(identity_file, passphrase,
if ((r = sshkey_load_private(privpath, "", &privkey, NULL)) != 0 &&
if ((r = sshkey_load_private(filename, "", &prv, commentp)) == 0)
r = sshkey_load_private(filename, pass, &prv, commentp);
if ((r = sshkey_load_private(path, NULL,
if ((r = sshkey_load_private(options.host_key_files[i], "",