using System;

using System.IO;

using System.Security.Cryptography;

using System.Text;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        string secret = "A376553B-6854-4475-8F1A-0EF24036A09D";

        string key = "b1c788f1-1fab-43ec-ac00-4cbe843b493f";

        var tempToken = DateTime.UtcNow.ToString("yyyy/M/d H:m:s", CultureInfo.InvariantCulture) + "#" + key  + "#" + DateTime.UtcNow.AddMinutes(10).ToString("yyyy/M/d H:m:s", CultureInfo.InvariantCulture);

        var token = Encrypt(tempToken,secret);

        var hash = CreateMd5(token);

    Console.WriteLine(token.Replace("+","%2B") + "*" + hash);

    }

        private const string initVector = "tu89geji340t89u2";

​

        // This constant is used to determine the keysize of the encryption algorithm.

        private const int keysize = 256;

      public static string Encrypt(string plainText, string passPhrase)

        {

           byte[] initVectorBytes = Encoding.UTF8.GetBytes(initVector);

            byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);

            var password = new Rfc2898DeriveBytes(passPhrase, new byte[8], 10000);

            byte[] keyBytes = password.GetBytes(keysize / 8);

            var symmetricKey = new RijndaelManaged();

            symmetricKey.Mode = CipherMode.CBC;

            ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes);

            var memoryStream = new MemoryStream();

            var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write);

            cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);

            cryptoStream.FlushFinalBlock();

            byte[] cipherTextBytes = memoryStream.ToArray();

            memoryStream.Close();

            cryptoStream.Close();

            return Convert.ToBase64String(cipherTextBytes);

        }

    public static string CreateMd5(string input)

        {

            byte[] inputBytes = Encoding.ASCII.GetBytes(input);

            return CreateMd5(inputBytes);

        }

​

        public static string CreateMd5(byte[] inputBytes)

        {

            // Use input string to calculate MD5 hash

            var md5 = MD5.Create();

            byte[] hashBytes = md5.ComputeHash(inputBytes);

​

             var sb = new StringBuilder();

            for (int i = 0; i < hashBytes.Length; i++)

            {

                sb.Append(hashBytes[i].ToString("x2"));

            }

            return sb.ToString();

        }

}