C# Test Encryption and Decryption-优快云博客

本文介绍了一个使用 C# 实现的简单应用程序，该程序包括 UUID 获取、字符串编码与解码的功能，并实现了一种简单的校验和计算方法。通过示例代码展示了如何对字符串进行加解密操作及如何计算字符串的校验和。

 public MainWindow()
        {
          
            InitializeComponent();
            Title = getUUID();
            string s= httpGet("http://220.181.57.216/");
            //MessageBox.Show(s);
            MessageBox.Show( CheckSum("2019-9-10"));
            string sEncode=encode("0;2018-12-30");
            string sDecode=decode(sEncode );
            Title = sEncode +"-------"+ sDecode ;


        }

        int tabIndex = 0;



        string getUUID()
        {
            string code = null;
            SelectQuery query = new SelectQuery("select * from Win32_ComputerSystemProduct");
            using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))
            {

              //  MessageBox.Show(searcher.Get().Count.ToString());
                foreach (var item in searcher.Get() )
                {
                    using (item) code = item["UUID"].ToString();

                }
            }
            return code;


        }


        public static string encode(string str)
        {
            string htext = "";

            for (int i = 0; i < str.Length; i++)
            {
                htext = htext + (char)(str[i] + 22 );
            }
            return htext;
        }

        public static string decode(string str)
        {
            string dtext = "";

            for (int i = 0; i < str.Length; i++)
            {
                dtext = dtext + (char)(str[i] - 22 );
            }
            return dtext;
        }

        private static string CheckSum(string message)
        {
            char[] chars = message.ToCharArray();
            int checksum = 0;
            for (int i = 0; i < chars.Length; i++)
            {
                checksum += (int)chars[i];
            }
           //  checksum = (~checksum & 0xFFFF) + 0x0001;
             //return Convert.ToString(checksum, 16).ToUpper();
             return Convert.ToString(checksum, 10).ToUpper().PadLeft(5,'0');
        }

转载于:https://www.cnblogs.com/wgscd/p/9663094.html