Simple C# Url Parameter Encryption

Thu, 03 Oct 2013

Simple encryption and encoding for URL parameters.

using System;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace Ixoxo.Helpers
{
  public static class UrlEncryptionHelper
  {
    private static byte[] _optionalEntropy = { 9, 8, 7, 6, 5 };
  
    public static string Encrypt(string plainText)
    {
      return HttpServerUtility.UrlTokenEncode(ProtectedData.Protect(Encoding.UTF8.GetBytes(plainText), _optionalEntropy, DataProtectionScope.LocalMachine));
    }
    
    public static string Decrypt(string text)
    {
      return Encoding.UTF8.GetString(ProtectedData.Unprotect(HttpServerUtility.UrlTokenDecode(text), _optionalEntropy, DataProtectionScope.LocalMachine));
    }
  }
}