C# Example of how to create a secured hash signature from requested text and key

SecuredHashSignature.cs

using System;
using System.Text;
using System.Linq;
using System.Security.Cryptography;
          
public class Program
{
  public static void Main()
  {
    var request = "322424946172;69760;24051943;000001;69760;000182B0CC538B1C5F1EFB31CDA1FB01A15D62AC380F38A6EDB6";
    var signature = CreateSignature(request,"2a0f5c8feea9a9d52ed2555a3540cea9dc92982b75b50ef0");
    Console.Write(signature);
  }
  
  public static string CreateSignature(string request, string hexEncodedKey)
  {
    var key = FromHexString(hexEncodedKey);
    var iso919 = new MACTripleDES(key);
    var bytes = Encoding.Unicode.GetBytes(request);
    var signBytes = iso919.ComputeHash(bytes);
    var sign = Convert.ToBase64String(signBytes);
    return sign;
  }
  
  public static string ToHexString(byte[] bytes)
  {
    StringBuilder hex = new StringBuilder(bytes.Length * 2);
    foreach (byte b in bytes) hex.AppendFormat("{0:X2}", b);
    return hex.ToString();
  }
  
  public static byte[] FromHexString(string hex)
  {
    return Enumerable.Range(0, hex.Length)
                     .Where(x => x % 2 == 0)
                     .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                     .ToArray();
  }
}