using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Security.Cryptography;
using?System.IO;
using?System.Net;

namespace?Tencent
{
????class?Cryptography
????{
????????public?static?UInt32?HostToNetworkOrder（UInt32?inval）
????????{
????????????UInt32?outval?=?0;
????????????for?（int?i?=?0;?i?????????????????outval?=?（outval?<>?（i?*?8））?&?255）;
????????????return?outval;
????????}

????????public?static?Int32?HostToNetworkOrder（Int32?inval）
????????{
????????????Int32?outval?=?0;
????????????for?（int?i?=?0;?i?????????????????outval?=?（outval?<>?（i?*?8））?&?255）;
????????????return?outval;
????????}
????????///?

????????///?解密方法
????????///?

????????///?密文
????????///?
????????///?
????????///?
????????public?static?string?AES_decrypt（String?Input?string?EncodingAESKey?ref?string?corpid）
????????{
????????????byte[]?Key;
????????????Key?=?Convert.Frombase64String（EncodingAESKey?+?“=“）;
????????????byte[]?Iv?=?new?byte[16];
????????????Array.Copy（Key?Iv?16）;
????????????byte[]?btmpMsg?=?AES_decrypt（Input?Iv?Key）;

????????????int?len?=?BitConverter.ToInt32（btmpMsg?16）;
????????????len?=?IPAddress.NetworkToHostOrder（len）;


????????????byte[]?bMsg?=?new?byte[len];
????????????byte[]?bCorpid?=?new?byte[btmpMsg.Length?-?20?-?len];
????????????Array.Copy（btmpMsg?20?bMsg?0?len）;
????????????Array.Copy（btmpMsg?20?+?len?bCorpid?0?btmpMsg.Length?-?20?-?len）;
????????????string?oriMsg?=?Encoding.UTF8.GetString（bMsg）;
????????????corpid?=?Encoding.UTF8.GetString（bCorpid）;


????????????return?oriMsg;
????????}

????????public?static?String?AES_encrypt（String?Input?string?EncodingAESKey?string?corpid）
????????{
????????????byte[]?Key;
????????????Key?=?Convert.Frombase64String（EncodingAESKey?+?“=“）;
????????????byte[]?Iv?=?new?byte[16];
????????????Array.Copy（Key?Iv?16）;
????????????string?Randcode?=?CreateRandCode（16）;
????????????byte[]?bRand?=?Encoding.UTF8.GetBytes（Randcode）;
????????????byte[]?bCorpid?=?Encoding.UTF8.GetBytes（corpid）;
????????????byte[]?btmpMsg?=?Encoding.UTF8.GetBytes（Input）;
????????????byte[]?bMsgLen?=?BitConverter.GetBytes（HostToNetworkOrder（btmpMsg.Length））;
????????????byte[]?bMsg?=?new?byte[bRand.Length?+?bMsgLen.Length?+?bCorpid.Length?+?btmpMsg.Length];

????????????Array.Copy（bRand?bMsg?bRand.Length）;
????????????Array.Copy（bMsgLen?0?bMsg?bRand.Length?bMsgLen.Length）;
????????????Array.Copy（btmpMsg?0?bMsg?bRand.Length?+?bMsgLen.Length?btmpMsg.Length）;
????????????Array.Copy（bCorpid?0?bMsg?bRand.Length?+?bMsgLen.Length?+?btmpMsg.Length?bCorpid.Length）;

????????????return?AES_encrypt（bMsg?Iv?Key）;

????????}
????????private?static?string?CreateRandCode（int?codeLen）
????????{
????????????string?codeSerial?=?“234567

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-06-29?11:09??Demo.WeChat\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\bin\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\bin\Debug\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\bin\Release\
?????文件????????8580??2016-06-23?16:15??Demo.WeChat\Demo.Common\Cryptography.cs
?????文件????????2583??2016-06-29?11:10??Demo.WeChat\Demo.Common\Demo.Common.csproj
?????文件?????????227??2016-06-22?01:17??Demo.WeChat\Demo.Common\Demo.Common.csproj.user
?????文件????????9151??2016-06-29?11:09??Demo.WeChat\Demo.Common\Log.cs
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\obj\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\obj\Debug\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\obj\Debug\TempPE\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\obj\Release\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.Common\obj\Release\TempPE\
?????目錄???????????0??2016-06-29?11:17??Demo.WeChat\Demo.Common\Properties\
?????文件????????1358??2016-06-22?01:17??Demo.WeChat\Demo.Common\Properties\AssemblyInfo.cs
?????文件????????4347??2016-06-29?11:10??Demo.WeChat\Demo.Common\weixinsendmessage.cs
?????文件???????10439??2016-06-23?16:17??Demo.WeChat\Demo.Common\WXBizMsgCrypt.cs
?????文件?????????662??2016-06-29?11:10??Demo.WeChat\Demo.Common\wxmessage.cs
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.WeChat\
?????文件????????1410??2016-06-29?11:09??Demo.WeChat\Demo.WeChat.sln
?????文件???????61440??2016-06-29?11:18??Demo.WeChat\Demo.WeChat.suo
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.WeChat\bin\
?????文件?????????444??2016-06-29?11:10??Demo.WeChat\Demo.WeChat\Default.aspx
?????文件????????7431??2016-06-29?11:16??Demo.WeChat\Demo.WeChat\Default.aspx.cs
?????文件?????????806??2016-06-29?11:11??Demo.WeChat\Demo.WeChat\Default.aspx.designer.cs
?????文件????????4521??2016-06-29?11:11??Demo.WeChat\Demo.WeChat\Demo.WeChat.csproj
?????文件????????1171??2016-06-24?09:31??Demo.WeChat\Demo.WeChat\Demo.WeChat.csproj.user
?????文件?????????980??2016-06-29?11:11??Demo.WeChat\Demo.WeChat\Demo.WeChat.Publish.xml
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.WeChat\obj\
?????目錄???????????0??2016-06-29?11:27??Demo.WeChat\Demo.WeChat\obj\Debug\
............此處省略7個文件信息