C#对Url进行处理，传递Url代码,Asp.Net代码库,德仔网

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【Asp.Net】 C#对Url进行处理，传递Url
作者:Dezai.CN / 发布于2013/1/4/ 564
string _QueryStringKey = "abcdefgh"; //URL传输参数加密Key
        /// 
        /// 加密URL传输的字符串
        /// 
        /// 
        /// 
        public string EncryptQueryString(string QueryString)
        {
            return Encrypt(QueryString, _QueryStringKey);
        }
        /// 
        /// 解密URL传输的字符串
        /// 
        /// 
        /// 
        public string DecryptQueryString(string QueryString)
        {
            return Decrypt(QueryString, _QueryStringKey);
        }
        /// 
        /// DEC 加密过程
        /// 
        /// 
        /// 
        /// 
        public string Encrypt(string pToEncrypt, string sKey)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();  //把字符串放到byte数组中 
            byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
            //byte[]  inputByteArray=Encoding.Unicode.GetBytes(pToEncrypt); 
            des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);  //建立加密对象的密钥和偏移量
            des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);   //原文使用ASCIIEncoding.ASCII方法的GetBytes方法 
            MemoryStream ms = new MemoryStream();     //使得输入密码必须输入英文文本
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            StringBuilder ret = new StringBuilder();
            foreach (byte b in ms.ToArray())
            {
                ret.AppendFormat("{0:X2}", b);
            }
            ret.ToString();
            return ret.ToString();
        }
        /// 
        /// DEC 解密过程
        /// 
        /// 
        /// 
        /// 
        public string Decrypt(string pToDecrypt, string sKey)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
            for (int x = 0; x < pToDecrypt.Length / 2; x++)
            {
                int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
                inputByteArray[x] = (byte)i;
            }
            des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);  //建立加密对象的密钥和偏移量，此值重要，不能修改  
            des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            StringBuilder ret = new StringBuilder();  //建立StringBuild对象，CreateDecrypt使用的是流对象，必须把解密后的文本变成流对象 
            return System.Text.Encoding.Default.GetString(ms.ToArray());
        }
试试其它关键字
　加密解密Url字符串　
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