public static function sign($msg, $key, $method = 'HS256')
{
if (empty(self::$methods[$method])) {
throw new DomainException('Algorithm not supported');
}
list($function, $algo) = self::$methods[$method];
switch ($function) {
case 'hash_hmac':
return hash_hmac($algo, $msg, $key, true);
case 'openssl':
$signature = '';
$success = openssl_sign($msg, $signature, $key, $algo);
if (!$success) {
throw new DomainException("OpenSSL unable to sign data");
} else {
return $signature;
}
}
} /**
* @param object|array $payload PHP object or array
* @param string $key The secret key
* @param string $algo The signing algorithm
*
* @return string A JWT
*/
public static function encode($payload, $key, $algo = 'HS256')
{
$header = array('typ' => 'jwt', 'alg' => $algo);
$segments = array();
$segments[] = JWT::urlsafeB64Encode(JWT::jsonEncode($header));
$segments[] = JWT::urlsafeB64Encode(JWT::jsonEncode($payload));
$signing_input = implode('.', $segments);
$signature = JWT::sign($signing_input, $key, $algo);
$segments[] = JWT::urlsafeB64Encode($signature);
return implode('.', $segments);
}
