Jose\Algorithm\KeyEncryption\AESGCMKW::wrapKey PHP Method

    public function wrapKey(JWKInterface $key, $cek, array $complete_headers, array &$additional_headers)
    {
        $this->checkKey($key);
        $kek = Base64Url::decode($key->get('k'));
        $iv = random_bytes(96 / 8);
        $additional_headers['iv'] = Base64Url::encode($iv);
        list($encrypted_cek, $tag) = AESGCM::encrypt($kek, $iv, $cek, null);
        $additional_headers['tag'] = Base64Url::encode($tag);
        return $encrypted_cek;
    }