using System;

using Microsoft.Owin.Security.DataHandler.Encoder;

using System.IO;

​

public class Program

{

    public static void WriteEmail(BinaryWriter writer)

    {       

        writer.Write("asitmscreguk@yopmail.com");

    }

    static string encodedEmail = string.Empty;

    public static void Main()

    {

        //Encrypt

        using (MemoryStream memoryStream = new MemoryStream())

        {

            using (BinaryWriter binaryWriter = new BinaryWriter(memoryStream))

            {

                WriteEmail(binaryWriter);

                binaryWriter.Flush();

                var byteData =  memoryStream.ToArray();

​

                Base64TextEncoder encoder1 = new Base64TextEncoder();

                encodedEmail =  encoder1.Encode(byteData);

                Console.WriteLine("Encoded Email: " + encodedEmail);

            }

        }

        Console.WriteLine("----------------------------------");

        //Decrypt       

         Base64TextEncoder encoder = new Base64TextEncoder();

         var decodedValue = encoder.Decode(encodedEmail);

        using (MemoryStream input = new MemoryStream(decodedValue))

        {

            using (BinaryReader reader = new BinaryReader(input))

            {

                var email = reader.ReadString();

                Console.WriteLine("Email: "+ email);

            }

        }       

    }

}