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一个可逆加密的例子(2)
C#代码
EncryptString.aspx
<%@ Page language="c#" EnableViewState = "true" Codebehind="EncryptString.aspx.cs" AutoEventWireup="false" Inherits="eMeng.Exam.EncryptString" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>一个可逆加密的例子</title>
<meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0">
<meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<p align="center">一个可逆加密的例子
<asp:TextBox id="TextBox1" runat="server" Width="96%">http://dotnet.aspx.cc/</asp:TextBox>
<asp:RadioButtonList id="RadioButtonList1" runat="server" Font-Bold="True" RepeatDirection="Horizontal"
AutoPostBack="True"></asp:RadioButtonList>
<asp:TextBox id="TextBox2" runat="server" Width="96%"></asp:TextBox>
<asp:TextBox id="Textbox3" runat="server" Width="96%"></asp:TextBox>
</p>
</form>
</body>
</HTML>
EncryptString.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Security.Cryptography;
namespace eMeng.Exam
{
/// <summary>
/// EncryptString 的摘要说明。
/// </summary>
public class EncryptString : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.RadioButtonList RadioButtonList1;
protected System.Web.UI.WebControls.TextBox TextBox2;
protected System.Web.UI.WebControls.TextBox Textbox3;
protected System.Web.UI.HtmlControls.HtmlForm Form1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!this.IsPostBack)
{
ArrayList MyList = new ArrayList();
MyList.Add("加密");
MyList.Add("解密");
RadioButtonList1.DataSource = MyList;
RadioButtonList1.DataBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <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.RadioButtonList1.SelectedIndexChanged += new System.EventHandler(this.RadioButtonList1_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void RadioButtonList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
if( RadioButtonList1.SelectedIndex == 0)
TextBox2.Text = EncryptText(TextBox1.Text);
else
Textbox3.Text = DecryptText(TextBox2.Text);
}
// 加密
public string EncryptText(String strText)
{
return Encrypt(strText, "&%#@?,:*");
}
//'解密
public String DecryptText(String strText)
{
return Decrypt(strText, "&%#@?,:*");
}
//'加密函数
private String Encrypt(String strText, String strEncrKey)
{
Byte[] byKey = {};
Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
Byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
//'解密函数
private String Decrypt(String strText, String sDecrKey)
{
Byte[] byKey = {};
Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
Byte[] inputByteArray = new byte[strText.Length];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
}
}
做人要厚道，请注明转自chinazhan中国站长(www.ChinaZhan.com)。
EncryptString.aspx
<%@ Page language="c#" EnableViewState = "true" Codebehind="EncryptString.aspx.cs" AutoEventWireup="false" Inherits="eMeng.Exam.EncryptString" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>一个可逆加密的例子</title>
<meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0">
<meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<p align="center">一个可逆加密的例子
<asp:TextBox id="TextBox1" runat="server" Width="96%">http://dotnet.aspx.cc/</asp:TextBox>
<asp:RadioButtonList id="RadioButtonList1" runat="server" Font-Bold="True" RepeatDirection="Horizontal"
AutoPostBack="True"></asp:RadioButtonList>
<asp:TextBox id="TextBox2" runat="server" Width="96%"></asp:TextBox>
<asp:TextBox id="Textbox3" runat="server" Width="96%"></asp:TextBox>
</p>
</form>
</body>
</HTML>
EncryptString.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Security.Cryptography;
namespace eMeng.Exam
{
/// <summary>
/// EncryptString 的摘要说明。
/// </summary>
public class EncryptString : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.RadioButtonList RadioButtonList1;
protected System.Web.UI.WebControls.TextBox TextBox2;
protected System.Web.UI.WebControls.TextBox Textbox3;
protected System.Web.UI.HtmlControls.HtmlForm Form1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!this.IsPostBack)
{
ArrayList MyList = new ArrayList();
MyList.Add("加密");
MyList.Add("解密");
RadioButtonList1.DataSource = MyList;
RadioButtonList1.DataBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <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.RadioButtonList1.SelectedIndexChanged += new System.EventHandler(this.RadioButtonList1_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void RadioButtonList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
if( RadioButtonList1.SelectedIndex == 0)
TextBox2.Text = EncryptText(TextBox1.Text);
else
Textbox3.Text = DecryptText(TextBox2.Text);
}
// 加密
public string EncryptText(String strText)
{
return Encrypt(strText, "&%#@?,:*");
}
//'解密
public String DecryptText(String strText)
{
return Decrypt(strText, "&%#@?,:*");
}
//'加密函数
private String Encrypt(String strText, String strEncrKey)
{
Byte[] byKey = {};
Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
Byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
//'解密函数
private String Decrypt(String strText, String sDecrKey)
{
Byte[] byKey = {};
Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
Byte[] inputByteArray = new byte[strText.Length];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
}
}
做人要厚道，请注明转自chinazhan中国站长(www.ChinaZhan.com)。