using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System;

using System.Collections.Generic;

using System.IO;

using System.Net;

using System.Net.Http;

using System.Net.Http.Headers;

using System.Net.Http.Json;

using System.Security.Cryptography;

using System.Text;

using System.Text.RegularExpressions;

using System.Web;

​

​

public class Program

{

    public static void Main()

    {

        // acente ve refrance bilgilerini buraya girin

        var agentId="11659";

        var agentUserName="dogan";

        var agentPassword="dogancanli";

        var agentSecretKey="WRk2I/PTlJOXQgVs+3VfACZjxMudysF3Ap32g7xqyME=";

        var referance="11609_202405061435391363b604_ma_2";

        var  concatenatedKeys=$"{referance}-{agentId}-{agentUserName}-{agentPassword}";

        Console.WriteLine(GetComputedHmacSignatureString(agentSecretKey,concatenatedKeys));

    }

    private static string GetComputedHmacSignatureString(string secretKey, string concatenatedKeys)

{

    // Get the request body.

    var requestBody = Encoding.UTF8.GetBytes(concatenatedKeys);

​

    // Create an HMACSHA256 hash function using the secret key.

    using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(secretKey)))

    {

        // Compute the HMAC signature for the request body.

        byte[] hmacSignature = hmac.ComputeHash(requestBody);

​

        // Convert the signature to Base64 format.

        return Convert.ToBase64String(hmacSignature);

    }

}

}