Encryption Decryption using 3DES Algorithm in asp.net C#

Code for Class file is as per below displayed:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.IO;

using System.Text;

using System.Security.Cryptography;

/// <summary>

/// Summary description for EncryptDecrypt

/// </summary>

public class EncryptDecrypt

{

    public EncryptDecrypt()

    {

        //

        // TODO: Add constructor logic here

        //

    }

    //Define the tripple Des Provider

    public TripleDESCryptoServiceProvider m_des = new TripleDESCryptoServiceProvider();

    //Define the string Handler

    public UTF8Encoding m_utf8 = new UTF8Encoding();

    //Define the local Propertirs Array

    public byte[] m_key = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 13, 15, 16, 17, 18, 19, 20, 21, 22, 24, 23 };

    public byte[] m_iv = { 8, 7, 6, 5, 4, 3, 2, 1 };

    public byte[] Encypt(byte[] input)

    {

        return Transform(input, m_des.CreateEncryptor(m_key, m_iv));

    }

    public byte[] Decrypt(byte[] input)

    {

        return Transform(input, m_des.CreateDecryptor(m_key, m_iv));

    }

    public string Encypt(string text)

    {

        byte[] input = m_utf8.GetBytes(text);

        byte[] output = Transform(input, m_des.CreateEncryptor(m_key, m_iv));

        return Convert.ToBase64String(output);

    }

    public string Decrypt(string text)

    {

        byte[] input = Convert.FromBase64String(text);

        byte[] output = Transform(input, m_des.CreateDecryptor(m_key, m_iv));

        return m_utf8.GetString(output);

    }

    private byte[] Transform(byte[] input, ICryptoTransform cryptoTransform)

    {

        //Create the Neccessary streams

        MemoryStream memStream = new MemoryStream();

        CryptoStream cryptoStream = new CryptoStream(memStream, cryptoTransform, CryptoStreamMode.Write);

        //transform the bytes as requested

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

        cryptoStream.FlushFinalBlock();

        //Reasd the memory stream and convert it to byte array

        memStream.Position = 0;

        byte[] result = new byte[Convert.ToInt32(memStream.Length - 1) + 1];

        memStream.Read(result, 0, Convert.ToInt32(result.Length));

        memStream.Close();

        cryptoStream.Close();

        return result;

    }

}

Then Call From your page like 

EncryptDecrypt ed = new EncryptDecrypt();

        string EncryStr = ed.Encypt("Your String Goes Here");

        string DescryStr = ed.Decrypt(EncyStr);

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