Bitpay\Util\Util::sha512hmac PHP Метод

    public static function sha512hmac($data, $key)
    {
        return hash_hmac('SHA512', $data, $key);
    }

 public function testSha512Hmac()
 {
     $data = array(array('data', 'key', '3c5953a18f7303ec653ba170ae334fafa08e3846f2efe317b87efce82376253cb52a8c31ddcde5a3a2eee183c2b34cb91f85e64ddbc325f7692b199473579c58'));
     foreach ($data as $datum) {
         $this->assertSame($datum[2], Util::sha512hmac($datum[0], $datum[1]));
     }
 }