public string Decrypt(string pToDecrypt, string sKey)
{
    DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
    byte[] bytes = new PasswordDeriveBytes(sKey, null).GetBytes(8);
    MemoryStream stream = new MemoryStream();
    CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(bytes, bytes), CryptoStreamMode.Write);
    try
    {
        byte[] buffer = Convert.FromBase64String(pToDecrypt);
        stream2.Write(buffer, 0, buffer.Length);
        stream2.FlushFinalBlock();
        byte[] buffer3 = stream.ToArray();
        return Encoding.UTF8.GetString(buffer3);
    }
    catch
    {
        return "";
    }
}

public string Encrypt(string pToEncrypt, string sKey)
{
    DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
    byte[] bytes = new PasswordDeriveBytes(sKey, null).GetBytes(8);
    MemoryStream stream = new MemoryStream();
    CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(bytes, bytes), CryptoStreamMode.Write);
    try
    {
        byte[] buffer = Encoding.UTF8.GetBytes(pToEncrypt);
        stream2.Write(buffer, 0, buffer.Length);
        stream2.FlushFinalBlock();
        return Convert.ToBase64String(stream.ToArray());
    }
    catch
    {
        return "";
    }
}

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