function sign_reply($reply, $key, $signed_fields)
{
// Sign the given fields from the reply with the specified key.
// Return signed and sig
$text = '';
foreach ($signed_fields as $i) {
$val = $reply['openid.' . $i];
$text .= sprintf("%s:%s\n", $i, $val);
}
$sha1 = oidUtil::hmacsha1($key, $text);
$b64_sha1 = oidUtil::to_b64($sha1);
return array(implode(',', $signed_fields), $b64_sha1);
}
function create_return_to($base, $identity)
{
$args = array('id' => $identity, 'time' => (string) time());
$args['v'] = oidUtil::to_b64(oidUtil::hmacsha1($this->secret, $args['id'] . $args['time']));
return oidUtil::append_args($base, $args);
}
