ASP.NET中重要数据加密方法及实现

public class Operate
{
public Operate()
{
   //
   //TODO: 在此处添加构造函数逻辑
   //
}

    //Encrypting方法，用来对重要的数据进行加密，返回值为string类型
    public static string Encrypting(string strSource)
    {
        //把字符串放到数组中
        byte[] bytIn = System.Text.Encoding.Default.GetBytes(strSource);
        //建立加密对象的密钥和偏移量
        byte[] iv = { 102, 16, 93, 156, 78, 4, 218, 32 };   //定义偏移量
        byte[] key = { 55, 103, 246, 79, 36, 99, 167, 3 };   //定义密钥
        //实例DES加密类
        DESCryptoServiceProvider mobjCryptoService = new DESCryptoServiceProvider();
        mobjCryptoService.Key = iv;
        mobjCryptoService.IV = key;
        ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
        //实例MemoryStream流加密文件
        System.IO.MemoryStream ms = new System.IO.MemoryStream();
        CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
        cs.Write(bytIn, 0, bytIn.Length);
        cs.FlushFinalBlock();
        return System.Convert.ToBase64String(ms.ToArray());
    }

    //Decryptin方法，对已加密数据进行解密，返回值为string类型
    public static string Decryption(string Source)
    {
        try
        {
            //将解密字符串转换成字节数组
            byte[] bytIn = System.Convert.FromBase64String(Source);
            //给出解密的密钥和偏移量，并且与加密的相同
            byte[] iv = { 102, 16, 93, 156, 78, 4, 218, 32 };   //定义偏移量
            byte[] key = { 55, 103, 246, 79, 36, 99, 167, 3 };   //定义密钥
            DESCryptoServiceProvider mobjCryptoService = new DESCryptoServiceProvider();
            mobjCryptoService.Key = iv;
            mobjCryptoService.IV = key;
            //实例流进行解密
            System.IO.MemoryStream ms = new System.IO.MemoryStream(bytIn, 0, bytIn.Length);
            ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
            CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
            System.IO.StreamReader strd = new System.IO.StreamReader(cs, System.Text.Encoding.Default);
            return strd.ReadToEnd();
        }
        catch(Exception ex)
        {
            throw new Exception("在文件解密的时候出现错误！错误提示：\n" + ex.Message);
        }
    }
}

//调用时候的代码

string password = Operate.Encrypting(txtPass.Text.ToString());