【13】MD5编码、Zlib压缩解压缩

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1.MD5加密

        /// <summary>        /// 使用MD5加密算法        /// </summary>        /// <param name="md5MessageStr">需要加密的字符串</param>        /// <returns>加密后返回字符串</returns>        public static string GetMD5String(string md5MessageStr)        {            using (MD5 md5 = new MD5CryptoServiceProvider())            {                byte[] convertValue = Encoding.UTF8.GetBytes(md5MessageStr);                byte[] resultValue = md5.ComputeHash(convertValue);                string strResult = string.Empty;                for (int i = 0; i < 16; i++)                {                    strResult += resultValue[i].ToString("x2");                }                return strResult;            }        }

2.Zlib压缩解压缩

nuget获取zlib.net

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Web;using zlib;namespace LargePlatformService.Logic{    public class ZLibNetHelper    {        /// <summary>          /// zlib.net 解压函数          /// </summary>          /// <param name="strSource">带解压数据源</param>          /// <returns>解压后的数据</returns>          public static string DeflateDecompress(string strSource)        {            int data = 0;            int stopByte = -1;            byte[] Buffer = Convert.FromBase64String(strSource); // 解base64              MemoryStream intms = new MemoryStream(Buffer);            zlib.ZInputStream inZStream = new zlib.ZInputStream(intms);            List<byte> inByteList = new List<byte>();            int i = 0;            while (stopByte != (data = inZStream.Read()))            {                inByteList.Add((byte)data);            }            inZStream.Close();            return System.Text.Encoding.UTF8.GetString(inByteList.ToArray(), 0, inByteList.Count);        }        /// <summary>          /// zlib.net 压缩函数          /// </summary>          /// <param name="strSource">待压缩数据</param>          /// <returns>压缩后数据</returns>          public static string DeflateCompress(string strSource)        {            MemoryStream outms = new MemoryStream();            byte[] bytes = System.Text.Encoding.UTF8.GetBytes(strSource);            MemoryStream inms = new MemoryStream(bytes);            zlib.ZOutputStream outZStream = new zlib.ZOutputStream(outms, zlib.zlibConst.Z_DEFAULT_COMPRESSION);            try            {                CopyStream(inms, outZStream);            }            catch (Exception ex)            {                throw ex;            }            finally            {                outZStream.Close();            }            return Convert.ToBase64String(outms.ToArray());        }        public static void CopyStream(System.IO.Stream input, System.IO.Stream output)        {            byte[] buffer = new byte[2000];            int len;            while ((len = input.Read(buffer, 0, 2000)) > 0)            {                output.Write(buffer, 0, len);            }            output.Flush();        }          }}

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