src/Service/Tencent/Authorization.php
protected function signature()
    {
        $signatureKey = $this->buildSignatureKey();

        $sing = hash_hmac('SHA1', $signatureKey, $this->secretKey, true);

        return base64_encode($sing . $signatureKey);
    }
protected function signature()
    {
        $signatureKey = $this->buildSignatureKey();

        $sing = hash_hmac('SHA1', $signatureKey, $this->secretKey, true);

        return base64_encode($sing . $signatureKey);
    }
Tencent Authorization signature

@return string