MD5　16位 32 位加密实例

落日映苍穹つ 2022-09-29 12:58 167阅读 0赞

环境：vs.net2005/sql server2000/xp测试通过  
![None.gif][]1.MD5　16位加密实例  
![None.gif][]       using System;  
![None.gif][]using System.Collections.Generic;  
![None.gif][]using System.Text;  
![None.gif][]using System.Security.Cryptography;  
![None.gif][]  
![None.gif][]namespace md5  
![ExpandedBlockStart.gif][]![ContractedBlock.gif][]![dot.gif][]\{  
![InBlock.gif][]    class Program  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]    ![dot.gif][]\{  
![InBlock.gif][]        static void Main(string\[\] args)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            Console.WriteLine(UserMd5("8"));  
![InBlock.gif][]            Console.WriteLine(GetMd5Str("8"));  
![ExpandedSubBlockEnd.gif][]        \}  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        /\*\*//// <summary>  
![InBlock.gif][]        /// MD5 16位加密  
![InBlock.gif][]        /// </summary>  
![InBlock.gif][]        /// <param name="ConvertString"></param>  
![ExpandedSubBlockEnd.gif][]        /// <returns></returns>  
![InBlock.gif][]        public static string GetMd5Str(string ConvertString)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();  
![InBlock.gif][]            string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8);  
![InBlock.gif][]            t2 = t2.Replace("\-", "");  
![InBlock.gif][]            return t2;  
![ExpandedSubBlockEnd.gif][]        \}  
![InBlock.gif][]  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        /\*\*//// <summary>  
![InBlock.gif][]        /// MD5　32位加密  
![InBlock.gif][]        /// </summary>  
![InBlock.gif][]        /// <param name="str"></param>  
![ExpandedSubBlockEnd.gif][]        /// <returns></returns>  
![InBlock.gif][]       static  string UserMd5(string str)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]        ![dot.gif][]\{  
![InBlock.gif][]            string cl = str;  
![InBlock.gif][]            string pwd = "";  
![InBlock.gif][]            MD5 md5 = MD5.Create();//实例化一个md5对像  
![InBlock.gif][]            // 加密后是一个字节类型的数组，这里要注意编码UTF8/Unicode等的选择　  
![InBlock.gif][]            byte\[\] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl));  
![InBlock.gif][]            // 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得  
![InBlock.gif][]            for (int i = 0; i < s.Length; i\++)  
![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]            ![dot.gif][]\{  
![InBlock.gif][]                // 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（X）则格式后的字符是大写字符   
![InBlock.gif][]  
![InBlock.gif][]                pwd = pwd \+ s\[i\].ToString("X");  
![InBlock.gif][]                  
![ExpandedSubBlockEnd.gif][]            \}  
![InBlock.gif][]            return pwd;  
![ExpandedSubBlockEnd.gif][]        \}  
![ExpandedSubBlockEnd.gif][]    \}  
![ExpandedBlockEnd.gif][]\}

[None.gif]: /images/20220708/98039cd3d3514affb808882ecd0411f4.png
[ExpandedBlockStart.gif]: http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif
[ContractedBlock.gif]: http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif
[dot.gif]: /images/20220708/13fa155693ed47dea5021a650e66f19a.png
[InBlock.gif]: /images/20220708/081934a3f6754a2593f5634d1a26bc3a.png
[ExpandedSubBlockStart.gif]: http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif
[ContractedSubBlock.gif]: /images/20220708/bfacc1044a9d48d8914b65c0848f6dc3.png
[ExpandedSubBlockEnd.gif]: /images/20220708/20d80919e1a442b0a045537ee705252f.png
[ExpandedBlockEnd.gif]: /images/20220708/d04a40b303b641ea82dedd5b422189fc.png