DotNet加解密算法

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Security;

using System.Security.Cryptography;

using System.Xml ;

using System.Text ;

namespace Security

{

/// <summary>

/// Form1 的摘要说明。

/// </summary>

public class Form1 : System.Windows.Forms.Form

{

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Label label2;

private System.Windows.Forms.Label label3;

private System.Windows.Forms.Label label4;

private System.Windows.Forms.Label label5;

private System.Windows.Forms.Button btnEncr;

private System.Windows.Forms.Button btnDecr;

private System.Windows.Forms.Button btnCancal;

private System.Windows.Forms.Label label6;

private System.Windows.Forms.Label label7;

private System.Windows.Forms.GroupBox G2;

private System.Windows.Forms.GroupBox G1;

private System.Windows.Forms.TextBox txtDecrStr;

private System.Windows.Forms.TextBox txtEncrKey;

private System.Windows.Forms.TextBox txtDecrKey;

private System.Windows.Forms.TextBox txtEncrStr;

private System.Windows.Forms.TextBox txtEncr;

private System.Windows.Forms.TextBox txtDecr;

/// <summary>

/// 必需的设计器变量。

/// </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 );

}

Windows 窗体设计器生成的代码

/// <summary>

/// 应用程序的主入口点。

/// </summary>

[STAThread]

static void Main()

{

Application.Run(new Form1());

}

private void btnEncr_Click(object sender, System.EventArgs e)

{

try

{

TripleDESCryptoServiceProvider MyDes = new TripleDESCryptoServiceProvider();

MD5CryptoServiceProvider MyMd5 = new MD5CryptoServiceProvider();

MyDes.Key=MyMd5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(txtEncrKey.Text.ToString().Trim()));

MyDes.Mode=CipherMode.ECB;

ICryptoTransform DesEncrypt= MyDes.CreateEncryptor();

byte[] buffer=System.Text.Encoding.GetEncoding("GB2312").GetBytes(txtEncrStr.Text.ToString().Trim());

txtEncr.Text =Convert.ToBase64String(DesEncrypt.TransformFinalBlock(buffer,0,buffer.Length ));

}

catch(Exception ex)

{

MessageBox.Show(ex.Message,"错误！");

}

private void btnDecr_Click(object sender, System.EventArgs e)

{

try

{

TripleDESCryptoServiceProvider MyDes = new TripleDESCryptoServiceProvider();

MD5CryptoServiceProvider MyMd5 = new MD5CryptoServiceProvider();

MyDes.Key=MyMd5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(txtDecrKey.Text.ToString().Trim()));

MyDes.Mode=CipherMode.ECB;

ICryptoTransform DesEncrypt= MyDes.CreateDecryptor();

byte[] buffer=Convert.FromBase64String(txtDecrStr.Text.ToString().Trim());

txtDecr.Text =System.Text.Encoding.GetEncoding("GB2312").GetString(DesEncrypt.TransformFinalBlock(buffer,0,buffer.Length ));

}

catch(Exception ex)

{

MessageBox.Show(ex.Message,"错误！");

}

private void btnCancal_Click(object sender, System.EventArgs e)

{

this.Close();

}

private void Form1_Load(object sender, System.EventArgs e)

{

}

private void txtEncrStr_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)

{

}

private void txtEncrStr_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)

{

}

posted on 2006-07-13 10:25 快意人生阅读(175) 评论(0) 收藏举报