using System;

using System.Text;

using System.Security.Cryptography;

using System.Web;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(GetLoginUrl());

    }

    public static string GetLoginUrl()

{

    const string key = "0e896dfe28b327ffc7977bc511ce76f0";

    const string pathTemplate = "http://shreyasns.freshdesk.com/login/sso?name={0}&email={1}&timestamp={2}&hash={3}";

​

    var username = "Shreyas";

    var email = "shreyas.ns@freshdesk.com";

    int time = (int) (DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;

    string timems = time.ToString();

    var hash = GetHash(key, username, email, timems);

    var path = String.Format(pathTemplate, HttpUtility.UrlEncode(username), HttpUtility.UrlEncode(email), timems, hash);

​

    return path;

}

​

private static string GetHash(string secret, string name, string email, string timems)

{

    string input = name + email + timems;

    var keybytes = Encoding.Default.GetBytes(secret);

    var inputBytes = Encoding.Default.GetBytes(input);

​

    var crypto = new HMACMD5(keybytes);

    byte[] hash = crypto.ComputeHash(inputBytes);

​

    StringBuilder sb = new StringBuilder();

    foreach (byte b in hash)

    {

        string hexValue = b.ToString("X").ToLower(); // Lowercase for compatibility on case-sensitive systems

        sb.Append((hexValue.Length == 1 ? "0" : "") + hexValue);

    }

    return sb.ToString();

}

}

​

​