简单的编码加密

using System;
using System.Collections.Generic;
using System.Text;

namespace CEncrypt
{
    public class Encrypt
    {
        public Encrypt()
        { }
        /**//// <summary>
        /// 加密
        /// </summary>
        /// <param name="str">被加密字符</param>
        /// <param name="level">加密强度</param>
        /// <returns></returns>
        public static string EncryptCode(string str,int level)
        {
            string temp = Convert.ToBase64String(Encoding.Default.GetBytes(str));
            for (int i = 0; i < level; i++)
            {
                temp = Convert.ToBase64String(Encoding.Default.GetBytes(temp));
            }
            return temp;
        }
        /**//// <summary>
        /// 加密
        /// </summary>
        /// <param name="str">被解密字符</param>
        /// <param name="level">对应的加密强度</param>
        /// <returns></returns>
        public static string UnEncryptCode(string str,int level)
        {
            string temp = Encoding.Default.GetString(Convert.FromBase64String(str));
            for (int i = 0; i < level; i++)
            {
                temp= Encoding.Default.GetString(Convert.FromBase64String(temp));
            }
            return temp;
        }

    }
}