public function validateData($data, $key, $rawHash = false)
    {
        $test = @hash_hmac($this->macHash, '', '', $rawHash);
        if (!$test) {
            throw new InvalidConfigException('Failed to generate HMAC with hash algorithm: ' . $this->macHash);
        }
        $hashLength = StringHelper::byteLength($test);
        if (StringHelper::byteLength($data) >= $hashLength) {
            $hash = StringHelper::byteSubstr($data, 0, $hashLength);
            $pureData = StringHelper::byteSubstr($data, $hashLength, null);

            $calculatedHash = hash_hmac($this->macHash, $pureData, $key, $rawHash);

            if ($this->compareString($hash, $calculatedHash)) {
                return $pureData;
            }
        }

        return false;
    }