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  • 加密解密Url字符串,C#对Url进行处理,传递Url

    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());
            }

  • 相关阅读:
    严蔚敏数据结构习题3.14
    Effective C++ Item 34 Differentiate between inheritance of interface and inheritance of implementation
    Effective C++ Item 33 Avoid hiding inherited names
    Effective C++ Item 19 Treat class design as type design
    Effective C++ Item 18 Make interfaces easy to use correctly and hard to use incorrectly
    Effective C++ Item 17 Store newed objects in smart pointer in standalone statements
    Effective C++ Item 16 Use the same form in corresponding uses of new and delete
    Effective C++ Item 15 Provide access to raw resources in resource-managing classes
    Effective C++ Item 14 Think carefully about copying behavior in resource-managing classe
    Effective C++ Item 13 Use object to manage resources
  • 原文地址:https://www.cnblogs.com/ken-admin/p/6405739.html
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