/**
* Verify the authenticity of a message, given a shared MAC key
*
* @param string $message
* @param AuthenticationKey $secretKey
* @param string $mac
* @param mixed $encoding
* @param SymmetricConfig $config
* @return bool
*/
public static function verify(string $message, AuthenticationKey $secretKey, string $mac, $encoding = Halite::ENCODE_BASE64URLSAFE, SymmetricConfig $config = null) : bool
{
$decoder = Halite::chooseEncoder($encoding, true);
if ($decoder) {
// We were given hex data:
$mac = $decoder($mac);
}
if ($config === null) {
// Default to the current version
$config = SymmetricConfig::getConfig(Halite::HALITE_VERSION, 'auth');
}
return self::verifyMAC($mac, $message, $secretKey->getRawKeyMaterial(), $config);
}
/**
* Authenticate a message
*
* @param string|resource $plaintext
* @param AuthenticationKey $key
* @return string
*/
public function authSymmetric($plaintext, AuthenticationKey $key, array $options = []) : string
{
return \hash_hmac($this->config['hash'], $plaintext, $key->getRawBytes(), true);
}
/**
* Verify a MAC, given a MAC key
*
* @param string $message
* @param AuthenticationKey $secretKey
* @param string $mac
* @param boolean $raw
* @return boolean
*/
public static function verify(string $message, AuthenticationKey $secretKey, string $mac, bool $raw = false) : bool
{
if (!$raw) {
$mac = \Sodium\hex2bin($mac);
}
return self::verifyMAC($mac, $message, $secretKey->getRawKeyMaterial());
}