net加密软件
1. 用VB.net编写一个加密解密软件
"采用DES算法"这个说法不明确，首先是使用多少位的DES进行加密，通常是128位或192位，其次是，要先把主密钥转化成散列，才能供DES进行加密，转化的方法是什么没有明确，通常是md5，所以有的银行卡说是128位md5 3DS就是指用md5转换主密钥散列，用DES进行加密，但是DES本身是64位（包含校验码），2DES是128位，3DES是192位，但是没有2DES的叫法，所以128位、192位统称3DES
要完整的md5+3DS实例，需要100分以上，要不到我的空间中查找相关的文章
2. VB.NET开发的软件，大家一般都是怎么加密的
网上有很多专业的加密教程
最适合小开发者的软件加密方式就是下面这个
获取硬件信息和个人注册时的姓名手机号等一系列信息，通过预先设定好的加密函数进行散列加密，生成一个只有本人本机能使用的序列号，软件正版授权的时候用同样的方式生成序列号进行比对，一样则通过
3. .net软件,用什么软件加密狗加密,能防止代码反编译
.Net软件
特点,
些强
编译工具
.Net
执行文件进行反编译操作,并
相应
IL代码甚至
源代码
即使
采用混淆工具
及强命名工具
能
根本
解决问题,代码依
容易
Reflectoer等工具反编译源代码
软件加密狗：威步(WIBU)
CodeMeter,AxProtector(for.net)两款软件加密狗性能非
错
反编译
问题,与传统
代码混淆工具（Obfuscator）
同,AxProtector
完全阻止
.NET
程序集（由
C#,
VB.NET,
Delphi.NET,
ASP.Net…
等语言编写）
反编译
通俗
讲,AxProtector
破解者
您
.NET
代码
间构建
强
防破解保护屏障,
基于
Windows
基于
MSIL
兼容格式文件
原始
.NET
代码完整
加密
封装
本
代码内,
论何
都
释放
硬盘,
于破解者
见
与单纯
.net加密软件
同,AxProtector与CodeMeter硬件加密狗配套餐使用,采用
更
严密
密钥管理,及
先进
AES、RSA、ECC等加密算
存储或传输密钥,保证通讯安全
.Net代码编译
.class
包含
源代码
所
信息（
包括注释）,尤其
其
保存
调试信息
候
所
按照
式编译
.class
文件
非
轻易
反编译
般软件
发商
采用
种叫做混淆器
工具
混淆器
作用
编译
代码进行混淆,使
其
反编译或者反编译
代码混乱难懂
由于混淆器
混淆
名称或流程,
能防止源代码
反编译,
混淆器
作用
增加
反编译
难度,
终
结
治标
治本
于
些掌握工具
说几乎
透明
AxProtector
款真
意义
加密源代码、防止反编译
.net软件加密软件
AxProtector加密
.net原代码,任何
候原代码都
能
原
硬盘
采用AxProtector加密
.net代码
程序调用或执行某
段函数
候,才能通
AxProtectorClass
内存
解密
返
程序
执行,运行
迅速立即加密
种随机加密、按需解密原代码
功能,能
防止.Net程序
反编译,同
能够
防止API加密点
摘除
效
保证
源代码
执行效率
安全性
4. 用.net实现文件夹加密
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO ;
using System.Diagnostics ;
using System.Threading ;
namespace 伪装文件夹
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.FolderBrowserDialog foldeOpen;
private System.Windows.Forms.TextBox AfoldePath;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button AddPassword;
private System.Windows.Forms.ComboBox comboBox1;
private System.ComponentModel.IContainer components;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.AddPassword = new System.Windows.Forms.Button();
this.button1 = new System.Windows.Forms.Button();
this.AfoldePath = new System.Windows.Forms.TextBox();
this.foldeOpen = new System.Windows.Forms.FolderBrowserDialog();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.BackColor = System.Drawing.Color.Transparent;
this.groupBox1.Controls.Add(this.comboBox1);
this.groupBox1.Controls.Add(this.AddPassword);
this.groupBox1.Controls.Add(this.button1);
this.groupBox1.Controls.Add(this.AfoldePath);
this.groupBox1.Location = new System.Drawing.Point(6, 6);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(276, 78);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "加密";
//
// comboBox1
//
this.comboBox1.Items.AddRange(new object[] {
"我的电脑",
"我的文档",
"拨号网络",
"控制面板",
"计划任务",
"打印机",
"记事本",
"网络邻居",
"回收站",
"公文包",
"字体 ",
"Web 文件夹"});
this.comboBox1.Location = new System.Drawing.Point(12, 48);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(174, 20);
this.comboBox1.TabIndex = 15;
this.comboBox1.Text = "伪装类型";
//
// AddPassword
//
this.AddPassword.BackColor = System.Drawing.Color.Transparent;
this.AddPassword.ForeColor = System.Drawing.Color.Red;
this.AddPassword.Location = new System.Drawing.Point(192, 48);
this.AddPassword.Name = "AddPassword";
this.AddPassword.TabIndex = 14;
this.AddPassword.Text = "伪装";
this.AddPassword.Click += new System.EventHandler(this.AddPassword_Click);
//
// button1
//
this.button1.Location = new System.Drawing.Point(192, 20);
this.button1.Name = "button1";
this.button1.TabIndex = 8;
this.button1.Text = "文件夹路径";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// AfoldePath
//
this.AfoldePath.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(224)), ((System.Byte)(192)));
this.AfoldePath.Location = new System.Drawing.Point(12, 20);
this.AfoldePath.Name = "AfoldePath";
this.AfoldePath.ReadOnly = true;
this.AfoldePath.Size = new System.Drawing.Size(174, 21);
this.AfoldePath.TabIndex = 7;
this.AfoldePath.Text = "";
//
// groupBox2
//
this.groupBox2.BackColor = System.Drawing.Color.Transparent;
this.groupBox2.Controls.Add(this.button2);
this.groupBox2.Controls.Add(this.button3);
this.groupBox2.Controls.Add(this.textBox1);
this.groupBox2.Location = new System.Drawing.Point(6, 90);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(276, 76);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "解密";
//
// button2
//
this.button2.ForeColor = System.Drawing.Color.Red;
this.button2.Location = new System.Drawing.Point(192, 48);
this.button2.Name = "button2";
this.button2.TabIndex = 14;
this.button2.Text = "解密";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.ForeColor = System.Drawing.Color.Red;
this.button3.Location = new System.Drawing.Point(192, 20);
this.button3.Name = "button3";
this.button3.TabIndex = 8;
this.button3.Text = "文件夹路径";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// textBox1
//
this.textBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(255)), ((System.Byte)(128)));
this.textBox1.Location = new System.Drawing.Point(12, 24);
this.textBox1.Name = "textBox1";
this.textBox1.ReadOnly = true;
this.textBox1.Size = new System.Drawing.Size(174, 21);
this.textBox1.TabIndex = 7;
this.textBox1.Text = "";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(288, 174);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.MaximizeBox = false;
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "伪装文件夹";
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{
if(foldeOpen.ShowDialog ()==DialogResult.OK )
{
try
{
if(foldeOpen.SelectedPath .Substring (3,10)=="Documents ")
{
MessageBox.Show ("我不建议C盘下的文件夹伪装，这样可能会导致系统出问题");
}
else
{
AfoldePath.Text =foldeOpen.SelectedPath;
}
}
catch
{
if(foldeOpen.SelectedPath.Length >=4)
{
AfoldePath.Text =foldeOpen.SelectedPath;
}
else
{
MessageBox.Show ("无法对盘符进行伪装.");
}
}
}
}
private void AddPassword_Click(object sender, System.EventArgs e)
{
try
{
ProcessStartInfo p3=new ProcessStartInfo ("attrib.exe",@"-s -r -a -h "+AfoldePath.Text);
p3.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p3);
ProcessStartInfo p1=new ProcessStartInfo ("attrib.exe",@"-s -r -a -h "+AfoldePath.Text+@"\desktop.ini");
p1.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p1);
StreamWriter sw2=new StreamWriter (AfoldePath.Text+@"\desktop.ini" );
sw2.WriteLine (@"[.ShellClassInfo]" );
sw2.WriteLine ("CLSID="+GetPasType());
sw2.Close ();
ProcessStartInfo p =new ProcessStartInfo ("attrib.exe",@"+s +a +h +r "+AfoldePath.Text+@"\desktop.ini");
p.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p);
ProcessStartInfo p2=new ProcessStartInfo ("attrib.exe",@"+s +r "+AfoldePath.Text);
p2.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p2);
}
catch(Exception ee)
{
MessageBox.Show (ee.Message .ToString ());
}
}
private string GetPasType()
{
int index=comboBox1.SelectedIndex;
switch (index)
{
case 0: return @"{20D04FE0-3AEA-1069-A2D8-08002B30309D}";
case 1: return @"{450D8FBA-AD25-11D0-98A8-0800361B1103}";
case 2: return @"{992CFFA0-F557-101A-88EC-00DD010CCC48}";
case 3: return @"{21EC2020-3AEA-1069-A2DD-08002B30309D}";
case 4: return @"{D6277990-4C6A-11CF-8D87-00AA0060F5BF}";
case 5: return @"{2227A280-3AEA-1069-A2DE-08002B30309D}";
case 6: return @"{1FBA04EE-3024-11D2-8F1F-0000F87ABD16}";
case 7: return @"{208D2C60-3AEA-1069-A2D7-08002B30309D}";
case 8: return @"{645FF040-5081-101B-9F08-00AA002F954E}";
case 9: return @"{85BBD920-42A0-1069-A2E4-08002B30309D}";
case 10: return @"{BD84B380-8CA2-1069-AB1D-08000948F534}";
case 11: return @"{BDEADF00-C265-11d0-BCED-00A0C90AB50F}";
}
return @"{20D04FE0-3AEA-1069-A2D8-08002B30309D}";
}
private void button3_Click(object sender, System.EventArgs e)
{
if(foldeOpen.ShowDialog ()==DialogResult.OK )
{
textBox1.Text =foldeOpen.SelectedPath;
}
}
private void button2_Click(object sender, System.EventArgs e)
{
try
{
ProcessStartInfo p2=new ProcessStartInfo ("attrib.exe",@"-s -r -a -h "+textBox1.Text);
p2.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p2);
ProcessStartInfo p1=new ProcessStartInfo ("attrib.exe",@"-s -h -r "+textBox1.Text+@"\desktop.ini");
p1.WindowStyle= System.Diagnostics.ProcessWindowStyle.Hidden;
Process.Start (p1);
System.Threading.Thread.Sleep(1000);
File.Delete (textBox1.Text+@"\desktop.ini");
MessageBox.Show ("解密成功.");
}
catch(Exception ee)
{
MessageBox.Show (ee.Message.ToString ());
}
}
}
}