net代码加密

㈠ .NET如何实现数据加密

http://www.microsoft.com/china/technet/security/guidance/secmod39.mspx(最好的理论资料）
建立一个win form程序，然后把代码拷到后台，即可实现C#非对称加密程序 。
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Text;
using System.Security.Cryptography;

namespace 非对称加密
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TabControl tabControl1;
private System.Windows.Forms.TabPage tabPage1;
private System.Windows.Forms.TabPage tabPage2;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.SaveFileDialog save;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Button button5;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.RichTextBox richtext2;
private System.Windows.Forms.OpenFileDialog open;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.RichTextBox richtext3;
private System.Windows.Forms.RichTextBox richtext;
private System.Windows.Forms.Button button6;
private System.Windows.Forms.Button button7;
private System.Windows.Forms.Button button8;
/// <summary>
/// 必需的设计器变量。
private static RSACryptoServiceProvider crypt;
private static string privatekey;
private static string publickey;
private static byte [] bytes;
private static string publicinfo;
private static string privateinfo;
private static string readpublickey;
private static string readprivatekey;
// ///private static byte [] onebytes ;

/// </summary>
private System.ComponentModel.Container components = null;

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()
{
this.tabControl1 = new System.Windows.Forms.TabControl();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.button6 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.richtext = new System.Windows.Forms.RichTextBox();
this.button1 = new System.Windows.Forms.Button();
this.tabPage2 = new System.Windows.Forms.TabPage();
this.button8 = new System.Windows.Forms.Button();
this.button7 = new System.Windows.Forms.Button();
this.label3 = new System.Windows.Forms.Label();
this.richtext3 = new System.Windows.Forms.RichTextBox();
this.label2 = new System.Windows.Forms.Label();
this.richtext2 = new System.Windows.Forms.RichTextBox();
this.button5 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.save = new System.Windows.Forms.SaveFileDialog();
this.open = new System.Windows.Forms.OpenFileDialog();
this.tabControl1.SuspendLayout();
this.tabPage1.SuspendLayout();
this.tabPage2.SuspendLayout();
this.SuspendLayout();
//
// tabControl1
//
this.tabControl1.Controls.Add(this.tabPage1);
this.tabControl1.Controls.Add(this.tabPage2);
this.tabControl1.Location = new System.Drawing.Point(32, 64);
this.tabControl1.Name = "tabControl1";
this.tabControl1.SelectedIndex = 0;
this.tabControl1.Size = new System.Drawing.Size(416, 280);
this.tabControl1.TabIndex = 0;
//
// tabPage1
//
this.tabPage1.Controls.Add(this.button6);
this.tabPage1.Controls.Add(this.button3);
this.tabPage1.Controls.Add(this.button2);
this.tabPage1.Controls.Add(this.richtext);
this.tabPage1.Controls.Add(this.button1);
this.tabPage1.Location = new System.Drawing.Point(4, 21);
this.tabPage1.Name = "tabPage1";
this.tabPage1.Size = new System.Drawing.Size(408, 255);
this.tabPage1.TabIndex = 0;
this.tabPage1.Text = "得到钥匙";
//
// button6
//
this.button6.Location = new System.Drawing.Point(72, 168);
this.button6.Name = "button6";
this.button6.TabIndex = 4;
this.button6.Text = "写入文件";
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(200, 16);
this.button3.Name = "button3";
this.button3.TabIndex = 3;
this.button3.Text = "保存私匙";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(128, 16);
this.button2.Name = "button2";
this.button2.TabIndex = 2;
this.button2.Text = "保存公钥";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// richtext
//
this.richtext.Location = new System.Drawing.Point(16, 56);
this.richtext.Name = "richtext";
this.richtext.Size = new System.Drawing.Size(256, 96);
this.richtext.TabIndex = 1;
this.richtext.Text = "richTextBox1";
//
// button1
//
this.button1.Location = new System.Drawing.Point(8, 16);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(88, 23);
this.button1.TabIndex = 0;
this.button1.Text = "得到钥匙信息";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// tabPage2
//
this.tabPage2.Controls.Add(this.button8);
this.tabPage2.Controls.Add(this.button7);
this.tabPage2.Controls.Add(this.label3);
this.tabPage2.Controls.Add(this.richtext3);
this.tabPage2.Controls.Add(this.label2);
this.tabPage2.Controls.Add(this.richtext2);
this.tabPage2.Controls.Add(this.button5);
this.tabPage2.Controls.Add(this.button4);
this.tabPage2.Controls.Add(this.textBox1);
this.tabPage2.Controls.Add(this.label1);
this.tabPage2.Location = new System.Drawing.Point(4, 21);
this.tabPage2.Name = "tabPage2";
this.tabPage2.Size = new System.Drawing.Size(408, 255);
this.tabPage2.TabIndex = 1;
this.tabPage2.Text = "加密解密文字";
//
// button8
//
this.button8.Location = new System.Drawing.Point(216, 72);
this.button8.Name = "button8";
this.button8.TabIndex = 9;
this.button8.Text = "读取私匙";
this.button8.Click += new System.EventHandler(this.button8_Click);
//
// button7
//
this.button7.Location = new System.Drawing.Point(56, 72);
this.button7.Name = "button7";
this.button7.TabIndex = 8;
this.button7.Text = "读取公匙";
this.button7.Click += new System.EventHandler(this.button7_Click);
//
// label3
//
this.label3.Location = new System.Drawing.Point(200, 120);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(100, 16);
this.label3.TabIndex = 7;
this.label3.Text = "解密结果";
//
// richtext3
//
this.richtext3.Location = new System.Drawing.Point(200, 144);
this.richtext3.Name = "richtext3";
this.richtext3.Size = new System.Drawing.Size(120, 72);
this.richtext3.TabIndex = 6;
this.richtext3.Text = "richTextBox2";
//
// label2
//
this.label2.Location = new System.Drawing.Point(48, 120);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(128, 16);
this.label2.TabIndex = 5;
this.label2.Text = "加密窗口：";
//
// richtext2
//
this.richtext2.Location = new System.Drawing.Point(40, 144);
this.richtext2.Name = "richtext2";
this.richtext2.Size = new System.Drawing.Size(120, 72);
this.richtext2.TabIndex = 4;
this.richtext2.Text = "richTextBox2";
//
// button5
//
this.button5.Location = new System.Drawing.Point(200, 96);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(112, 23);
this.button5.TabIndex = 3;
this.button5.Text = "使用私匙解密";
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(48, 96);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(96, 23);
this.button4.TabIndex = 2;
this.button4.Text = "使用公匙加密";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(104, 32);
this.textBox1.Multiline = true;
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(168, 32);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "textBox1";
//
// label1
//
this.label1.Location = new System.Drawing.Point(128, 8);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(120, 16);
this.label1.TabIndex = 0;
this.label1.Text = "请输入加密的文字";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(504, 357);
this.Controls.Add(this.tabControl1);
this.Name = "Form1";
this.Text = "Form1";
this.tabControl1.ResumeLayout(false);
this.tabPage1.ResumeLayout(false);
this.tabPage2.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());
}
//得到钥匙信息
private void button1_Click(object sender, System.EventArgs e)
{
crypt=new RSACryptoServiceProvider();
publickey=crypt.ToXmlString(false);
richtext.Text="导出秘匙的情况下：\n"+publickey+"\n";
privatekey=crypt.ToXmlString(true);
string info="仅仅导出公匙的情况下：\n"+privatekey+"\n";
richtext.AppendText(info);
crypt.Clear();

}
//保存公匙信息
private void button2_Click(object sender, System.EventArgs e)
{

save=new SaveFileDialog();
save.Filter="File Text (*.txt)|*.txt|All File (*.*)|*.*";
save.ShowDialog();
publicinfo=save.FileName;

}
//保存密匙信息
private void button3_Click(object sender, System.EventArgs e)
{
save=new SaveFileDialog();
save.Filter="File Text (*.txt)|*.txt|All File (*.*)|*.*";
save.ShowDialog();
privateinfo=save.FileName;

}
//把钥匙信息写入文件
private void button6_Click(object sender, System.EventArgs e)
{

StreamWriter one=new StreamWriter(publicinfo,true,UTF8Encoding.UTF8);
one.Write(publickey);
StreamWriter two=new StreamWriter(privateinfo,true,UTF8Encoding.UTF8);
two.Write(privatekey);
one.Flush();
two.Flush();
one.Close();
two.Close();
MessageBox.Show("成功保存公匙和密匙！");

}
//用公匙加密
private void button4_Click(object sender, System.EventArgs e)
{

crypt=new RSACryptoServiceProvider();
UTF8Encoding enc=new UTF8Encoding();
bytes=enc.GetBytes(textBox1.Text);
crypt.FromXmlString( readpublickey );
bytes = crypt.Encrypt( bytes,false );
string encryttext=enc.GetString(bytes);//encryptbyte);
richtext2.Text="加密结果：\n"+encryttext+"\n"+"加密结束！";
}

private void button5_Click(object sender, System.EventArgs e)
{

UTF8Encoding enc=new UTF8Encoding();
byte [] decryptbyte;
crypt.FromXmlString ( readprivatekey ) ;
decryptbyte = crypt.Decrypt( bytes,false );
string decrypttext=enc.GetString( decryptbyte );
richtext3.Text = "解密结果：\n" + decrypttext + "\n" + "解密结束！" ;

}
//从文件中读取公匙信息
private void button7_Click(object sender, System.EventArgs e)
{
StreamReader sr ;
open = new OpenFileDialog( );
open.Filter="Text File (*.txt)|*.txt|All File (*.*)|*.* ";
// open.ShowDialog();
if(open.ShowDialog()==DialogResult.OK)
{
sr = new StreamReader(open.FileName,UTF8Encoding.UTF8);
}
else
{
MessageBox.Show("发生错误！");
return;
}
readpublickey = sr.ReadToEnd();
sr.Close();
}
//从文件中读取私匙信息
private void button8_Click(object sender, System.EventArgs e)
{
open = new OpenFileDialog( );
open.Filter="Text File (*.txt)|*.txt|All File (*.*)|*.* ";
open.ShowDialog();
StreamReader sr = new StreamReader(open.FileName,UTF8Encoding.UTF8);
readprivatekey = sr.ReadToEnd();
sr.Close();
}

}
}

㈡ net程序加密C#开发软件的源代码怎么加密

一般的加密，通过反编译和跟踪程序运行都不难破解，所以不仅要加密，还要阻止编译，防范跟踪。这是很专业的，市场上有很多现成加密狗产品，可以方便地解决这个问题。源代码只能采取保密措施，加密是不行的。

㈢ 在ASP.Net中，如何使用混淆加密的方法保护自己的源代码

其实，保护代码不需要那么费心。
像.net其实就是把cs文件转换成dll
文件就可以了，转换的方法看帮助或者去网站上搜索一下就能得到你想要的结果。
现在我们很多写的东西，到现在好没有到保密的程度，现在写的东西都是很一般的...除非你写的东西，是考虑到安全的因素很多那么就需要多加考虑一下了...

㈣ .net软件加密,加密锁哪种比较好,混淆代码可以实现吗

加密锁：威步(WIBU)的CodeMeter,AxProtector(for.net)两款软件加密锁性能非常不错 混淆的问题,与传统的代码混淆工具（Obfuscator）不同,AxProtector可以完全阻止对.NET 程序集（由 C#, VB.NET, Delphi.NET, ASP.Net… 等语言编写）的反编译。通俗的讲,AxProtector在破解者和您的 .NET 代码之间构建了强大的防破解保护屏障,生成一个基于 Windows 的而不是基于 MSIL 的兼容格式文件。原始的 .NET 代码完整的被加密后封装在本地代码内,无论何时都不会释放到硬盘,对于破解者是不可见的。 与单纯的.net加密软件不同,AxProtector与CodeMeter硬件加密狗配套餐使用,采用了更为严密的密钥管理,及最先进的AES、RSA、ECC等加密算法存储或传输密钥,保证通讯安全。 .Net代码编译后生成的 .class 中包含有源代码中的所有信息（不包括注释）,尤其是在其中保存有调试信息的时候。所以一个按照正常方式编译的.class 文件可以非常轻易地被反编译。一般软件开发商会采用一种叫做混淆器的工具。混淆器的作用是对编译好的代码进行混淆,使得其无法被反编译或者反编译后的代码混乱难懂。由于混淆器只是混淆了方法名称或流程,而不能防止源代码被反编译,因此混淆器的作用只是增加了反编译的难度,最终的结果也是治标不治本。对于一些掌握工具的人来说几乎还是透明的。AxProtector是一款真正意义的加密源代码、防止反编译的.net软件加密软件。 AxProtector加密了.net原代码,任何时候原代码都不可能被还原到硬盘当中。采用AxProtector加密后的.net代码只有在程序调用或执行某一段函数的时候,才能通过AxProtectorClass在内存中解密后返回到程序中执行,运行之后迅速立即加密。这种随机加密、按需解密原代码的功能,能很好的防止.Net程序的反编译,同时能够很好地防止API加密点被摘除。有效地保证了源代码的执行效率和安全性。

㈤ .net软件,加密,哪种加密锁比较好,混淆代码能力如何

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联系我们可以根据您的需求进行免费的试用！

㈥ asp.net(VB)加密解密源代码

答案如下 (经本人测试，肯定是可以用的……)
'-----------------------------------------
' 随机选8个字节既为密钥也为初始向量
Private Shared KEY_64() As Byte = {42, 162, 39, 156, 78, 4, 218, 32}
Private Shared IV_64() As Byte = {55, 113, 346, 79, 36, 99, 167, 3}

'------------------------------------------------
'标准的DES加密
Public Function Encrypt(ByVal value As String) As String
If value <> "" Then
Dim cryptoProvider As DESCryptoServiceProvider = New DESCryptoServiceProvider
Dim ms As MemoryStream = New MemoryStream
Dim cs As CryptoStream = New CryptoStream(ms, cryptoProvider.CreateEncryptor(KEY_64, IV_64), CryptoStreamMode.Write)
Dim sw As StreamWriter = New StreamWriter(cs)
sw.Write(value)
sw.Flush()
cs.FlushFinalBlock()
ms.Flush()
'--------------------------------------
'再转换为一个字符串
Return Convert.ToBase64String(ms.GetBuffer(), 0, ms.Length)
Else
Return ""
End If
End Function
'----------------------------------
'标准的DES解密
Public Function Decrypt(ByVal value As String) As String
If value <> "" Then
Dim cryptoProvider As DESCryptoServiceProvider = New DESCryptoServiceProvider

'---------------------------------------
'从字符串转换为字节组
Dim buffer As Byte() = Convert.FromBase64String(value)
Dim ms As MemoryStream = New MemoryStream(buffer)
Dim cs As CryptoStream = New CryptoStream(ms, cryptoProvider.CreateDecryptor(KEY_64, IV_64), CryptoStreamMode.Read)
Dim sr As StreamReader = New StreamReader(cs)
Return sr.ReadToEnd()
Else
Return ""
End If
End Function

㈦ 怎么给asp.net的代码加密呀,也就是说怎么保护.aspx的源程序.

asp.net不需要加密，
它的程序会自动编译成DLL。
aspx页面只是页面部分，真正的程序在.VB OR .cs文件中。
编译后就不需要这些文件啊。

㈧ .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

㈨ asp.net 地址加密,具体的代码

自定义方法来实现URL的加密与解密，代码如下：
using System.Security.Cryptography;
using System.IO;
using System.text;
/// <summary>
/// 加密
/// </summary>
/// <param name="str"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string Encode(string str, string key)
{
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(str);
MemoryStream stream = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write);
stream2.Write(bytes, 0, bytes.Length);
stream2.FlushFinalBlock();
StringBuilder builder = new StringBuilder();
foreach (byte num in stream.ToArray())
{
builder.AppendFormat("{0:X2}", num);
}
stream.Close();
return builder.ToString();
}
/// <summary>
/// Des 解密 GB2312
/// </summary>
/// <param name="str">Desc string</param>
/// <param name="key">Key ,必须为8位 </param>
/// <returns></returns>
public static string Decode(string str, string key)
{
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
byte[] buffer = new byte[str.Length / 2];
for (int i = 0; i < (str.Length / 2); i++)
{
int num2 = Convert.ToInt32(str.Substring(i * 2, 2), 0x10);
buffer[i] = (byte)num2;
}
MemoryStream stream = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(), CryptoStreamMode.Write);
stream2.Write(buffer, 0, buffer.Length);
stream2.FlushFinalBlock();
stream.Close();
return Encoding.GetEncoding("GB2312").GetString(stream.ToArray());
}
首页 → 网站编程 → Asp.Net编程教程 → ASP.NET实现URL加密与解密ASP.NET实现URL加密与解密
时间:2009-8-25 16:13:18 来源:hi..com 作者:webmaster
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调用方法
/// <summary>
/// If don't input key , Use default key
/// Des 加密 GB2312 :
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Encode(string str)
{
return VerifyTool.Encode(str, "Rainight");
}
/// <summary>
/// 解密
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Decode(string str)
{
return VerifyTool.Decode(str, "Rainight");
}

㈩ asp.net如何进行用户名和密码的加密和解密

直接给代码吧
using System.Web.Security;
string str= FormsAuthentication.(TextBox1.text, "MD5")
把TextBox1里的内容用MD5加密返回给str

MD5为不可逆加密所以不可解密，你只有再次加密与加密后的密码匹配来判断是否正确