Make API requests

import (
   "crypto/md5"
   "crypto/rand"
   "encoding/hex"
   "fmt"
   "log"
   "time"
)
// Signature=md5(AppId + SignatureNonce + ServerSecret + Timestamp)
func GenerateSignature(appId uint32, signatureNonce string, serverSecret string, timestamp int64) (Signature string){
   data := fmt.Sprintf("%d%s%s%d", appId, signatureNonce, serverSecret, timestamp)
   h := md5.New()
   h.Write([]byte(data))
   return hex.EncodeToString(h.Sum(nil))
}
func main() {
   /*Generate a random hexadecimal string of 16 characters. */
   nonceByte := make([]byte, 8)
   rand.Read(nonceByte)
   signatureNonce := hex.EncodeToString(nonceByte)
   log.Printf(signatureNonce)
   appId := 12345       // Use your AppId
   serverSecret := "9193cc662a4c0ec135ec71fb57194b38"    // Use your  ServerSecret
   timestamp := time.Now().Unix()
   /* appId:12345
      signatureNonce:4fd24687296dd9f3
      serverSecret:9193cc662a4c0ec135ec71fb57194b38
      timestamp:1615186943      2021/03/08 15:02:23
      signature:43e5cfcca828314675f91b001390566a
    */
   log.Printf("signature:%v", GenerateSignature(uint32(appId), signatureNonce, serverSecret, timestamp))
}

# -*- coding: UTF-8 -*-
import secrets
import string
import hashlib
import time
#Signature=md5(AppId + SignatureNonce + ServerSecret + Timestamp)
def GenerateSignature(appId, signatureNonce, serverSecret, timestamp):
    str1 = str(appId) + signatureNonce + serverSecret + str(timestamp)
    hash = hashlib.md5()
    hash.update(str1.encode("utf8"))
    signature = hash.hexdigest()
    return signature

def main():
    # Generate a random hexadecimal string of 16 characters. 
    signatureNonce = secrets.token_hex(8)

    # Use the application ID and server secret of your project.
    appId = 12345
    serverSecret = "9193cc662a4c0ec135ec71fb57194b38"
    # Obtain a 10-digit UNIX timestamp.
    timestamp = int(time.time())
    print(GenerateSignature(appId,signatureNonce,serverSecret,timestamp))

if __name__ == '__main__': main()

import java.security.MessageDigest;
import java.security.SecureRandom;
public class Md5{
    /**
     * Converts the byte array to a hexadecimal string.
     * @param bytes The byte array to be converted.
     * @return  The generated hexadecimal string.
     */
    public static String bytesToHex(byte[] bytes) {
        StringBuffer md5str = new StringBuffer();
        // Convert each byte of the array to a hexadecimal string and concatenate all the generated hexadecimal strings into an MD5 string.
        int digital;
        for (int i = 0; i < bytes.length; i++) {
            digital = bytes[i];
            if (digital < 0) {
                digital += 256;
            }
            if (digital < 16) {
                md5str.append("0");
            }
            md5str.append(Integer.toHexString(digital));
        }
        return md5str.toString();
    }
    // Signature=md5(AppId + SignatureNonce + ServerSecret + Timestamp)
    public static String GenerateSignature(long appId, String signatureNonce, String serverSecret, long timestamp){
        String str = String.valueOf(appId) + signatureNonce + serverSecret + String.valueOf(timestamp);
        String signature = "";
        try{
            // Create an object that provides the message-digest algorithm, and initialize the object as an MD5 algorithm object.
            MessageDigest md = MessageDigest.getInstance("MD5");
            // Obtain a byte array after calculation.
            byte[] bytes = md.digest(str.getBytes("utf-8"));
            // Convert each byte of the array to a hexadecimal string and concatenate all the generated hexadecimal strings into an MD5 string.
            signature = bytesToHex(bytes);
        }catch (Exception e) {
            e.printStackTrace();
        }
        return signature;
    }


    public static void main(String[] args){
        // Generate a random hexadecimal string of 16 characters.
        byte[] bytes = new byte[8];

        // Obtain a cryptographically strong random number generator by using the `SecureRandom` class.
        SecureRandom sr = new SecureRandom();

        sr.nextBytes(bytes);
        String signatureNonce = bytesToHex(bytes);
        long appId = 12345L;       // Use the application ID and server secret of your project. Append an "L" or "l" to the application ID to indicate that the application ID is of the LONG type.
        String serverSecret = "9193cc662a4c0ec135ec71fb57194b38";
        long timestamp = System.currentTimeMillis() / 1000L;
        System.out.println(GenerateSignature(appId,signatureNonce,serverSecret,timestamp));
    }
}

<?php
function GenerateSignature($appId, $signatureNonce, $serverSecret, $timestamp)
{
    $str = $appId.$signatureNonce.$serverSecret.$timestamp;
    $signature = md5($str);
    return $signature;
}

// Generate a random hexadecimal string of 16 characters.
$signatureNonce = bin2hex(random_bytes(8));
// Use the application ID and server secret of your project.
$appId = 12345;
$serverSecret = "9193cc662a4c0ec135ec71fb57194b38";
$timestamp = time();
$signature = GenerateSignature($appId, $signatureNonce, $serverSecret, $timestamp);
echo $signature;
?>

const crypto = require('crypto'); 
//Signature=md5(AppId + SignatureNonce + ServerSecret + Timestamp)
function GenerateUASignature(appId, signatureNonce, serverSecret, timeStamp){
    const hash = crypto.createHash('md5'); // Use the MD5 hash algorithm.
    var str = appId + signatureNonce + serverSecret + timeStamp;
    hash.update(str);
    //hash.digest('hex') indicates that the output is in the hexadecimal format.
    return hash.digest('hex');
}

var signatureNonce = crypto.randomBytes(8).toString('hex');
// Use the application ID and server secret of your project.
var appId = 12345;
var serverSecret = "9193cc662a4c0ec135ec71fb57194b38";
var timeStamp = Math.round(Date.now()/1000);
console.log(GenerateUASignature(appId, signatureNonce, serverSecret, timeStamp));