using System;

using System.IO;

using System.Security.Cryptography;

using System.Collections;

using System.Collections.Generic;  

using System.Text;

using System.Reflection;

using System.Linq; 

​

​

public class HashMac256  

{  

    public static string GenerateHash(string secretKey, string value){

        byte[] key = Encoding.ASCII.GetBytes(secretKey);

        HMACSHA256 myhmacsha1 = new HMACSHA256(key);

​

        byte[] byteArray = Encoding.ASCII.GetBytes(value);

​

        MemoryStream stream = new MemoryStream(byteArray);

​

         string computedHash = myhmacsha1.ComputeHash(stream).Aggregate("", (s, e) => s + String.Format("{0:x2}", e), s => s);

        return computedHash;

    }

    public static string GetHashOfObjectValues(object ob, string key) {

        string hash = "";

        SortedDictionary<string, string> dict = new SortedDictionary<string, string>();  

        PropertyInfo[] properties = ob.GetType().GetProperties();

        foreach (PropertyInfo property in properties)

        {

          dict.Add(property.Name,  (string) property.GetValue(ob, null));

        }

        StringBuilder builder = new StringBuilder();

         var list = dict.Keys.ToList();

         list.Sort(StringComparer.Ordinal);

         foreach (string k in list)  

        {  

            Console.WriteLine(k +" " + dict[k]);  

            builder.AppendFormat("{0}",dict[k]);

        }  

        string concatenatedString = builder.ToString();

        Console.WriteLine("\nConcatenatedString: {0}", concatenatedString);

        hash = GenerateHash(key, concatenatedString);

        return hash;

    }

    public static void Main(string[] args)  

    {  

       UserRequest request = new UserRequest();

       string hash = GetHashOfObjectValues(request, "abcd+1234");

       Console.WriteLine("\nhash: {0}", hash);

    }  

} 

​

​

public class UserRequest{

    public string AppVersion{ get; set; } ="4fgJIWGpawo=";

    public string LoginBy { get; set; } ="5Vs3cRQk5o8=";

    public string LoginName{ get; set; } ="YcW5WWhKiKw=";

    public string PIN { get; set; } ="BRciD5TDuXw=";

    public string Latitude{ get; set; } ="k0qr25VkyRoMdgDbKhMLDA==";

    public string DeviceOS{ get; set; } ="8cWtH/dXJcQ=";

    public string Longitude { get; set; } = "6INLDcs7+ljmlba08bNCdg==";

    public string SessionID{ get; set; } ="8JiuqnOKxotEIN9QEsygRmPVJmZ5mLpMTHASJgtcEHI3zd2KuuI7kg==";

    public string Location{ get; set; } ="1EACaP/omt3ggJHDp8iR5ZA/r8D+ZeCoaAv8Hy3gUkg=";

    public string Password {get;set;}="ZKPgpCGMeJQ8Ms/7jPavXg==";

​

}