using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(GetSHA1Hash("10000006", "2040000436", "3000001955", "10.98.99.1", "c192cfb2edd92450c7e7c51dfed5c794b4c9cdae"));

    }

    public static string GetSHA1Hash(params string[] arrParams)

        {

            string Input = "";

            int i;

            for (i = 0; i <= arrParams.Length - 1; i++)

            {

                Input = Input + " " + arrParams[i];

            }

        Console.WriteLine("Input:" + Input);

​

            System.Security.Cryptography.SHA1CryptoServiceProvider x = new System.Security.Cryptography.SHA1CryptoServiceProvider();

            byte[] bs = Encoding.UTF8.GetBytes(Input);

            bs = x.ComputeHash(bs);

​

            StringBuilder s = new StringBuilder();

            foreach (byte b in bs)

            {

                s.Append(b.ToString("x2").ToLower());

            }

            string sha1String = s.ToString();

            return sha1String;

        }

}