1.MD5加密

1     /// 
   2     /// 使用MD5加密算法   3     /// 
   4     /// 需要加密的字符串   5     /// 
     
      加密后返回字符串
        6     public static string GetMD5String(string md5MessageStr)   7     {   8         using (MD5 md5 = new MD5CryptoServiceProvider())   9         {  10             byte[] convertValue = Encoding.UTF8.GetBytes(md5MessageStr);  11             byte[] resultValue = md5.ComputeHash(convertValue);  12             string strResult = string.Empty;  13             for (int i = 0; i < 16; i++)  14             {  15                 strResult += resultValue[i].ToString("x2");  16             }  17             return strResult;  18         }  19     }

 

2.Zlib压缩解压缩

nuget获取zlib.net

1         using System;   2         using System.Collections.Generic;   3         using System.IO;   4         using System.Linq;   5         using System.Web;   6         using zlib;   7            8         namespace LargePlatformService.Logic   9         {  10             public class ZLibNetHelper  11             {  12                 /// 
    13                 /// zlib.net 解压函数    14                 /// 
    15                 /// 带解压数据源    16                 /// 
        
         解压后的数据
            17                 public static string DeflateDecompress(string strSource)  18                 {  19                     int data = 0;  20                     int stopByte = -1;  21                     byte[] Buffer = Convert.FromBase64String(strSource); // 解base64    22                     MemoryStream intms = new MemoryStream(Buffer);  23                     zlib.ZInputStream inZStream = new zlib.ZInputStream(intms);  24                     List
        
          inByteList = new List
         
          ();  25                     int i = 0;  26                     while (stopByte != (data = inZStream.Read()))  27                     {  28                         inByteList.Add((byte)data);  29                     }  30                     inZStream.Close();  31                     return System.Text.Encoding.UTF8.GetString(inByteList.ToArray(), 0, inByteList.Count);  32           33                 }  34           35                 /// 
          
    36                 /// zlib.net 压缩函数    37                 /// 
    38                 /// 
          待压缩数据    39                 /// 
          
           压缩后数据
              40                 public static string DeflateCompress(string strSource)  41                 {  42                     MemoryStream outms = new MemoryStream();  43                     byte[] bytes = System.Text.Encoding.UTF8.GetBytes(strSource);  44                     MemoryStream inms = new MemoryStream(bytes);  45                     zlib.ZOutputStream outZStream = new zlib.ZOutputStream(outms, zlib.zlibConst.Z_DEFAULT_COMPRESSION);  46                     try  47                     {  48                         CopyStream(inms, outZStream);  49                     }  50                     catch (Exception ex)  51                     {  52                         throw ex;  53                     }  54                     finally  55                     {  56                         outZStream.Close();  57                     }  58                     return Convert.ToBase64String(outms.ToArray());  59                 }  60           61           62                 public static void CopyStream(System.IO.Stream input, System.IO.Stream output)  63                 {  64                     byte[] buffer = new byte[2000];  65                     int len;  66                     while ((len = input.Read(buffer, 0, 2000)) > 0)  67                     {  68                         output.Write(buffer, 0, len);  69                     }  70                     output.Flush();  71                 }        72             }  73         }