net代碼加密

㈠ .NET如何實現數據加密

http://www.microsoft.com/china/technet/security/guidance/secmod39.mspx(最好的理論資料）
建立一個win form程序，然後把代碼拷到後台，即可實現C#非對稱加密程序 。
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 非對稱加密
{
/// <summary>
/// Form1 的摘要說明。
/// </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>
/// 必需的設計器變數。
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 窗體設計器支持所必需的
//
InitializeComponent();

//
// TODO: 在 InitializeComponent 調用後添加任何構造函數代碼
//
}

/// <summary>
/// 清理所有正在使用的資源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗體設計器生成的代碼
/// <summary>
/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
/// </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 = "得到鑰匙";
//
// button6
//
this.button6.Location = new System.Drawing.Point(72, 168);
this.button6.Name = "button6";
this.button6.TabIndex = 4;
this.button6.Text = "寫入文件";
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 = "保存公鑰";
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 = "得到鑰匙信息";
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 = "讀取私匙";
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 = "讀取公匙";
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 = "解密結果";
//
// 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 = "請輸入加密的文字";
//
// 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>
/// 應用程序的主入口點。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
//得到鑰匙信息
private void button1_Click(object sender, System.EventArgs e)
{
crypt=new RSACryptoServiceProvider();
publickey=crypt.ToXmlString(false);
richtext.Text="導出秘匙的情況下：\n"+publickey+"\n";
privatekey=crypt.ToXmlString(true);
string info="僅僅導出公匙的情況下：\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;

}
//把鑰匙信息寫入文件
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="加密結果：\n"+encryttext+"\n"+"加密結束！";
}

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 = "解密結果：\n" + decrypttext + "\n" + "解密結束！" ;

}
//從文件中讀取公匙信息
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("發生錯誤！");
return;
}
readpublickey = sr.ReadToEnd();
sr.Close();
}
//從文件中讀取私匙信息
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#開發軟體的源代碼怎麼加密

一般的加密，通過反編譯和跟蹤程序運行都不難破解，所以不僅要加密，還要阻止編譯，防範跟蹤。這是很專業的，市場上有很多現成加密狗產品，可以方便地解決這個問題。源代碼只能採取保密措施，加密是不行的。

㈢ 在ASP.Net中，如何使用混淆加密的方法保護自己的源代碼

其實，保護代碼不需要那麼費心。
像.net其實就是把cs文件轉換成dll
文件就可以了，轉換的方法看幫助或者去網站上搜索一下就能得到你想要的結果。
現在我們很多寫的東西，到現在好沒有到保密的程度，現在寫的東西都是很一般的...除非你寫的東西，是考慮到安全的因素很多那麼就需要多加考慮一下了...

㈣ .net軟體加密,加密鎖哪種比較好,混淆代碼可以實現嗎

加密鎖：威步(WIBU)的CodeMeter,AxProtector(for.net)兩款軟體加密鎖性能非常不錯 混淆的問題,與傳統的代碼混淆工具（Obfuscator）不同,AxProtector可以完全阻止對.NET 程序集（由 C#, VB.NET, Delphi.NET, ASP.Net… 等語言編寫）的反編譯。通俗的講,AxProtector在破解者和您的 .NET 代碼之間構建了強大的防破解保護屏障,生成一個基於 Windows 的而不是基於 MSIL 的兼容格式文件。原始的 .NET 代碼完整的被加密後封裝在本地代碼內,無論何時都不會釋放到硬碟,對於破解者是不可見的。 與單純的.net加密軟體不同,AxProtector與CodeMeter硬體加密狗配套餐使用,採用了更為嚴密的密鑰管理,及最先進的AES、RSA、ECC等加密演算法存儲或傳輸密鑰,保證通訊安全。 .Net代碼編譯後生成的 .class 中包含有源代碼中的所有信息（不包括注釋）,尤其是在其中保存有調試信息的時候。所以一個按照正常方式編譯的.class 文件可以非常輕易地被反編譯。一般軟體開發商會採用一種叫做混淆器的工具。混淆器的作用是對編譯好的代碼進行混淆,使得其無法被反編譯或者反編譯後的代碼混亂難懂。由於混淆器只是混淆了方法名稱或流程,而不能防止源代碼被反編譯,因此混淆器的作用只是增加了反編譯的難度,最終的結果也是治標不治本。對於一些掌握工具的人來說幾乎還是透明的。AxProtector是一款真正意義的加密源代碼、防止反編譯的.net軟體加密軟體。 AxProtector加密了.net原代碼,任何時候原代碼都不可能被還原到硬碟當中。採用AxProtector加密後的.net代碼只有在程序調用或執行某一段函數的時候,才能通過AxProtectorClass在內存中解密後返回到程序中執行,運行之後迅速立即加密。這種隨機加密、按需解密原代碼的功能,能很好的防止.Net程序的反編譯,同時能夠很好地防止API加密點被摘除。有效地保證了源代碼的執行效率和安全性。

㈤ .net軟體,加密,哪種加密鎖比較好,混淆代碼能力如何

《web虎-加密防盜版系統》
團隊核心成員平均超10年相關經驗,web虎超3年研發測試。近600家軟體/課件客戶,國家漢辦等用戶多年實用檢驗。使用不同於同類產品的驅動層加密使加密鎖安全性，通用性更好。
聯系我們可以根據您的需求進行免費的試用！

㈥ asp.net(VB)加密解密源代碼

答案如下 (經本人測試，肯定是可以用的……)
'-----------------------------------------
' 隨機選8個位元組既為密鑰也為初始向量
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}

'------------------------------------------------
'標準的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()
'--------------------------------------
'再轉換為一個字元串
Return Convert.ToBase64String(ms.GetBuffer(), 0, ms.Length)
Else
Return ""
End If
End Function
'----------------------------------
'標準的DES解密
Public Function Decrypt(ByVal value As String) As String
If value <> "" Then
Dim cryptoProvider As DESCryptoServiceProvider = New DESCryptoServiceProvider

'---------------------------------------
'從字元串轉換為位元組組
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 怎麼給asp.net的代碼加密呀,也就是說怎麼保護.aspx的源程序.

asp.net不需要加密，
它的程序會自動編譯成DLL。
aspx頁面只是頁面部分，真正的程序在.VB OR .cs文件中。
編譯後就不需要這些文件啊。

㈧ .net軟體,用什麼軟體加密狗加密,能防止代碼反編譯

.Net軟體
特點,
些強
編譯工具
.Net
執行文件進行反編譯操作,並
相應
IL代碼甚至
源代碼
即使
採用混淆工具
及強命名工具
能
根本
解決問題,代碼依
容易
Reflectoer等工具反編譯源代碼
軟體加密狗：威步(WIBU)
CodeMeter,AxProtector(for.net)兩款軟體加密狗性能非
錯
反編譯
問題,與傳統
代碼混淆工具（Obfuscator）
同,AxProtector
完全阻止
.NET
程序集（由
C#,
VB.NET,
Delphi.NET,
ASP.Net…
等語言編寫）
反編譯
通俗
講,AxProtector
破解者
您
.NET
代碼
間構建
強
防破解保護屏障,
基於
Windows
基於
MSIL
兼容格式文件
原始
.NET
代碼完整
加密
封裝
本
代碼內,
論何
都
釋放
硬碟,
於破解者
見
與單純
.net加密軟體
同,AxProtector與CodeMeter硬體加密狗配套餐使用,採用
更
嚴密
密鑰管理,及
先進
AES、RSA、ECC等加密算
存儲或傳輸密鑰,保證通訊安全
.Net代碼編譯
.class
包含
源代碼
所
信息（
包括注釋）,尤其
其
保存
調試信息
候
所
按照
式編譯
.class
文件
非
輕易
反編譯
般軟體
發商
採用
種叫做混淆器
工具
混淆器
作用
編譯
代碼進行混淆,使
其
反編譯或者反編譯
代碼混亂難懂
由於混淆器
混淆
名稱或流程,
能防止源代碼
反編譯,
混淆器
作用
增加
反編譯
難度,
終
結
治標
治本
於
些掌握工具
說幾乎
透明
AxProtector
款真
意義
加密源代碼、防止反編譯
.net軟體加密軟體
AxProtector加密
.net原代碼,任何
候原代碼都
能
原
硬碟
採用AxProtector加密
.net代碼
程序調用或執行某
段函數
候,才能通
AxProtectorClass
內存
解密
返
程序
執行,運行
迅速立即加密
種隨機加密、按需解密原代碼
功能,能
防止.Net程序
反編譯,同
能夠
防止API加密點
摘除
效
保證
源代碼
執行效率
安全性

㈨ asp.net 地址加密,具體的代碼

自定義方法來實現URL的加密與解密，代碼如下：
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 ,必須為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());
}
首頁 → 網站編程 → Asp.Net編程教程 → ASP.NET實現URL加密與解密ASP.NET實現URL加密與解密
時間:2009-8-25 16:13:18 來源:hi..com 作者:webmaster
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調用方法
/// <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如何進行用戶名和密碼的加密和解密

直接給代碼吧
using System.Web.Security;
string str= FormsAuthentication.(TextBox1.text, "MD5")
把TextBox1里的內容用MD5加密返回給str

MD5為不可逆加密所以不可解密，你只有再次加密與加密後的密碼匹配來判斷是否正確