求 查询字符串的加密方法。

[paul_C]

比如 csdn的 http://so.csdn.net/bbsSearchResult.aspx?q=%E7%9A%84%E8%90%A8%E8%8A%AC%E7%9A%84

怎么加密q值？

都有哪些方法

要能解密的！！

谢谢

[杰子]

我的博客有一个加密的类，你可以看看有用不
http://blog.csdn.net/jiezigege/archive/2009/07/31/4397730.aspx

[paul_C]

谢谢楼上的，

这个方法不可逆啊，加密了后，如果不是用作比较的话，

我就用不了查询字符串了

[paul_C]

顶起来啊

[feitianchong]

        #region 对称加密（可解密）
        //定义用于对称加密的常量
        private const string SYMMETRICKEY = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
        private const string SYMMETRICTEMPKEY = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
        //定义成员变量
        private static SymmetricAlgorithm mobjCryptoService;
        private static string Key;

        private static void InitializeKey()
        {
            mobjCryptoService = new RijndaelManaged();
            //初始化密钥
            Key = SYMMETRICKEY;
        }

        /// <summary>
        /// 取得加密密钥
        /// </summary>
        /// <returns>返回密钥</returns>
        private static byte[] GetLegalKey()
        {
            string sTemp = Key;
            mobjCryptoService.GenerateKey();
            byte[] bytTemp = mobjCryptoService.Key;
            int KeyLength = bytTemp.Length;
            if (sTemp.Length > KeyLength)
                sTemp = sTemp.Substring(0, KeyLength);
            else if (sTemp.Length < KeyLength)
                sTemp = sTemp.PadRight(KeyLength, ' ');
            return ASCIIEncoding.ASCII.GetBytes(sTemp);
        }

        /// <summary>
        /// 获得用于加密的初始向量
        /// </summary>
        /// <returns>返回初试向量</returns>
        private static byte[] GetLegalIV()
        {
            string sTemp = SYMMETRICTEMPKEY;
            mobjCryptoService.GenerateIV();
            byte[] bytTemp = mobjCryptoService.IV;
            int IVLength = bytTemp.Length;
            if (sTemp.Length > IVLength)
                sTemp = sTemp.Substring(0, IVLength);
            else if (sTemp.Length < IVLength)
                sTemp = sTemp.PadRight(IVLength, ' ');
            return ASCIIEncoding.ASCII.GetBytes(sTemp);
        }

        /// <summary>
        /// 功能：对称加密算法
        /// 作者：木木
        /// 日期：2005-11-20
        /// 更改者：
        /// 更改日期：
        /// </summary>
        /// <param name="Source">待加密的数据，必须转化未字符传</param>
        /// <returns>经过加密的数据</returns>
        public static string fEncrypData(string Source)
        {
            InitializeKey();
            byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
            MemoryStream ms = new MemoryStream();
            mobjCryptoService.Key = GetLegalKey();
            mobjCryptoService.IV = GetLegalIV();
            ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
            CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
            cs.Write(bytIn, 0, bytIn.Length);
            cs.FlushFinalBlock();
            ms.Close();
            byte[] bytOut = ms.ToArray();
            return Convert.ToBase64String(bytOut);
        }
        /// <summary>
        /// 功能：对称解密算法
        /// 作者：木木
        /// 日期：2005-11-20
        /// 更改者：
        /// 更改日期：
        /// </summary>
        /// <param name="Source">待解密的数据</param>
        /// <returns>解密后的数据</returns>
        public static string fDecryptData(string Source)
        {
            InitializeKey();
            byte[] bytIn = Convert.FromBase64String(Source);
            MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
            mobjCryptoService.Key = GetLegalKey();
            mobjCryptoService.IV = GetLegalIV();
            ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
            CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
            StreamReader sr = new StreamReader(cs);
            return sr.ReadToEnd();
        }
        #endregion 对称加密（可解密）

[love_cloud]

没闹过 给你顶个 别沉了