Conversational AI Server Callback

# -*- coding: utf8 -*-
import hmac
import base64
from hashlib import sha256

# Feature: Third-Party callback signature verification
# The parameters are as follows:
#   key: Key configured in the console.
#   body: Body returned by the Tencent Cloud callback.
#   sign: Signature returned by the Tencent Cloud callback.
# Returned values:
#   Status: OK indicates a successful verification, and FAIL indicates a failed verification. See Info for details.
#   Info: Information about a successful/failed verification.

def checkSign(key, body, sign):
    temp_dict = {}
    computSign = base64.b64encode(hmac.new(key.encode('utf-8'), body.encode('utf-8'), digestmod=sha256).digest()).decode('utf-8')
    print(computSign)
    if computSign == sign:
        temp_dict['Status'] = 'OK'
        temp_dict['Info'] = 'Verification successful.'
        return temp_dict
    else:
        temp_dict['Status'] = 'FAIL'
        temp_dict['Info'] = 'Verification failed.'
        return temp_dict

if __name__ == '__main__':
    key = '123654'
    body = "{\n" + "\t\"EventGroupId\":\t2,\n" + "\t\"EventType\":\t204,\n" + "\t\"CallbackTs\":\t1664209748188,\n" + "\t\"EventInfo\":\t{\n" + "\t\t\"RoomId\":\t8489,\n" + "\t\t\"EventTs\":\t1664209748,\n" + "\t\t\"EventMsTs\":\t1664209748180,\n" + "\t\t\"UserId\":\t\"user_85034614\",\n" + "\t\t\"Reason\":\t0\n" + "\t}\n" + "}"
    sign = 'kkoFeO3Oh2ZHnjtg8tEAQhtXK16/KI05W3BQff8IvGA='
    result = checkSign(key, body, sign)
    print(result)

<?php

class TlsEventSig {
    
    private $key = false;
    private $body = false;
    
    public function __construct( $key, $body ) {
        $this->key = $key;
		$this->body = $body;
    }

    private function __hmacsha256() {
        $hash = hash_hmac( 'sha256', $this->body, $this->key, true );
		return base64_encode( $hash);
    }
    
    public function genEventSig() {
        return $this->__hmacsha256();
    }
}

$key="789";
$data="{\n\t\"EventGroupId\":\t1,\n\t\"EventType\":\t101,\n\t\"CallbackTs\":\t1608086882372,\n\t\"EventInfo\":\t{\n\t\t\"RoomId\":\t20222,\n\t\t\"EventTs\":\t1608086882,\n\t\t\"UserId\":\t\"222222_phone\"\n\t}\n}";

$api = new  TlsEventSig($key, $data);
echo $api->genEventSig();

package main
import "fmt"
import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/base64"
)

func main () {
    var data = "{\n\t\"EventGroupId\":\t1,\n\t\"EventType\":\t101,\n\t\"CallbackTs\":\t1608086882372,\n\t\"EventInfo\":\t{\n\t\t\"RoomId\":\t20222,\n\t\t\"EventTs\":\t1608086882,\n\t\t\"UserId\":\t\"222222_phone\"\n\t}\n}"
    var key = "789"

    //JSRUN Engine 2.0. It supports up to 30 languages and fully simulated input/output for online interaction.
    fmt.Println(hmacsha256(data,key))
}

func hmacsha256(data string, key string) string {
	h := hmac.New(sha256.New, []byte(key))
	h.Write([]byte(data))
	return base64.StdEncoding.EncodeToString(h.Sum(nil))
}