C# 文件加密解密（支持签名）

实践的加解密文件例子，附带传输，可签名验证

很有借鉴作用

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DESHelp;
using TransferFilesHelper;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;

namespace ClientSide
{
    public partial class ClientMain : Form
    {
        string filePath = string.Empty;   //文件路径
        string strIPAddress=“127.0.0.1“;   //目标主机的IP地址
        string strPort=“7468“;   //目标主机的端口号
        Thread threadSend;   //发送数据线程

        public ClientMain（）
        {
            InitializeComponent（）;
            this.toolStripStatusLabelClientMain.Text = “加载完毕“;
        }

        private void butt

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      22016  2013-06-19 20:14  SocketApplication\ClientSide\bin\Debug\ClientSide.exe

     文件      54784  2013-06-19 20:14  SocketApplication\ClientSide\bin\Debug\ClientSide.pdb

     文件      11600  2013-06-19 20:14  SocketApplication\ClientSide\bin\Debug\ClientSide.vshost.exe

     文件      10360  2013-06-19 19:01  SocketApplication\ClientSide\ClientMain.cs

     文件      10579  2013-06-18 21:15  SocketApplication\ClientSide\ClientMain.Designer.cs

     文件       6230  2013-06-18 21:01  SocketApplication\ClientSide\ClientMain.resx

     文件       4216  2013-06-19 20:11  SocketApplication\ClientSide\ClientSide.csproj

     文件       1488  2013-06-19 20:00  SocketApplication\ClientSide\ClientSide.idc

     文件       9180  2013-06-18 10:59  SocketApplication\ClientSide\DES.cs

     文件       2006  2013-06-18 21:03  SocketApplication\ClientSide\MD5.cs

     文件        180  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.ClientMain.resources

     文件       1098  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.csproj.FileListAbsolute.txt

     文件      22016  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.exe

     文件      54784  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.pdb

     文件        180  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.Properties.Resources.resources

     文件        180  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\ClientSide.TargetInfo.resources

     文件       6386  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        550  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\GenerateResource.read.1.tlog

     文件       1264  2013-06-19 20:14  SocketApplication\ClientSide\obj\x86\Debug\GenerateResource.write.1.tlog

     文件        496  2013-06-17 21:32  SocketApplication\ClientSide\Program.cs

     文件       1396  2013-06-17 10:01  SocketApplication\ClientSide\Properties\AssemblyInfo.cs

     文件       2858  2013-06-18 18:00  SocketApplication\ClientSide\Properties\Resources.Designer.cs

     文件       5612  2013-06-17 10:01  SocketApplication\ClientSide\Properties\Resources.resx

     文件       1108  2013-06-18 18:00  SocketApplication\ClientSide\Properties\Settings.Designer.cs

     文件        249  2013-06-17 10:01  SocketApplication\ClientSide\Properties\Settings.settings

     文件       8208  2013-06-18 15:29  SocketApplication\ClientSide\RSA.cs

     文件       2129  2013-06-18 20:18  SocketApplication\ClientSide\TargetInfo.cs

     文件       4553  2013-06-17 21:33  SocketApplication\ClientSide\TargetInfo.Designer.cs

     文件       5817  2013-06-17 17:17  SocketApplication\ClientSide\TargetInfo.resx

     文件       1775  2013-06-18 18:25  SocketApplication\ClientSide\TransferFiles.cs

............此处省略47个文件信息