使用非对称RSA加密

最新推荐文章于 2025-02-27 07:00:00 发布

renyanbinnet

最新推荐文章于 2025-02-27 07:00:00 发布

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文章标签：加密 textbox asp string server div

本文链接：https://blog.youkuaiyun.com/renyanbinnet/article/details/1958547

版权

using System;
using System.Security.Cryptography;
using System.Text;
using System.IO;

/// <summary>
/// 下面介绍如何使用非对称RSA加密的方法：
/// </summary>
public partial class test : System.Web.UI.Page
{

     // 加密:
     public string   EncryptData( string data, string readpublickey)
    {
        RSACryptoServiceProvider crypt = new RSACryptoServiceProvider();
        UTF8Encoding enc = new UTF8Encoding();
         byte [] bytes = enc.GetBytes(data);
        crypt.FromXmlString(readpublickey);
        bytes = crypt.Encrypt(bytes, false );
         string encryttext = Convert.ToBase64String(bytes);
         return encryttext;
    }

     // 解密:
     public string DecryptData( string data, string readprivatekey)
    {
        RSACryptoServiceProvider crypt = new RSACryptoServiceProvider();
        UTF8Encoding enc = new UTF8Encoding();
         byte [] bytes = Convert.FromBase64String(data);
        crypt.FromXmlString(readprivatekey);
         byte [] decryptbyte = crypt.Decrypt(bytes, false );
         string decrypttext = enc.GetString(decryptbyte);

         return decrypttext;
    }

     // 制造公匙和私匙的方法如下
     public void CreateKey()
    {
        RSACryptoServiceProvider crypt = new RSACryptoServiceProvider();
        TxtPublicKey.Text = crypt.ToXmlString( false );   // 公匙
        TxtPrivateKey.Text = crypt.ToXmlString( true );   // 私匙

        msg.Text = " 成功保存公匙和密匙！ " ;
    }

     protected void BtnCreate_Click( object sender, EventArgs e)
    {
         CreateKey();
    }
     protected void BtnEncrypt_Click( object sender, EventArgs e)
    {
        MyResult.Text = EncryptData(MyData.Text, TxtPublicKey.Text);
    }
     protected void BtnDecrypt_Click( object sender, EventArgs e)
    {
        MyData.Text = DecryptData(MyResult.Text, TxtPrivateKey.Text);
    }
}

<% @ Page AutoEventWireup = " true " CodeFile = " test.aspx.cs " Inherits = " test " Language = " C# "
    ValidateRequest = " false " %>

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
     < meta content ="text/html; charset=utf-8" http-equiv ="Content-Type" />
     < title > 下面介绍如何使用非对称RSA加密的方法： </ title ></ style >
</ head >
< body >
     < form id ="myform1" runat ="server" >
         < div id ="content" >
             < div class ="rtblue" >
                 < div style ="clear: both;" >
                     < div >
                         < div >
                             < div class ="grewbox" >
                                下面介绍如何使用非对称RSA加密的方法：
                                 < br />
                                 < asp:Label ID ="msg" runat ="server" Text ="" Width ="70px" ></ asp:Label >< br />
                                 < table >
                                     < tr >
                                         < td style ="width: 69px" >
                                            共钥: </ td >
                                         < td style ="width: 100px" >
                                             < asp:TextBox ID ="TxtPublicKey" runat ="server" Height ="43px" TextMode ="MultiLine"
                                                Width ="440px" ></ asp:TextBox ></ td >
                                     </ tr >
                                     < tr >
                                         < td style ="width: 69px" >
                                            私钥: </ td >
                                         < td style ="width: 100px" >
                                             < asp:TextBox ID ="TxtPrivateKey" runat ="server" Height ="45px" TextMode ="MultiLine"
                                                Width ="439px" ></ asp:TextBox ></ td >
                                     </ tr >
                                 </ table >
                             </ div >
                             < div class ="newl" >
                             </ div >
                         </ div >
                     </ div >
                 </ div >
             </ div >
         </ div >
         < asp:Button ID ="BtnCreate" runat ="server" Text ="创建密码" OnClick ="BtnCreate_Click" />
         < asp:Button ID ="BtnEncrypt" runat ="server" Text ="加密" Width ="44px" OnClick ="BtnEncrypt_Click" />
         < asp:Button ID ="BtnDecrypt" runat ="server" Text ="解密" Width ="49px" OnClick ="BtnDecrypt_Click" />
         < br />
         < table border ="0" cellpadding ="3" cellspacing ="6" >
             < tr >
                 < td align ="right" >
                    明文数据 </ td >
                 < td >
                     < span style ="height: 58px;" >   < asp:TextBox ID ="MyData" runat ="server" ></ asp:TextBox ></ span ></ td >
             </ tr >
             < tr >
                 < td align ="right" valign ="top" >
                    密文数据 </ td >
                 < td valign ="top" >
                     < asp:TextBox ID ="MyResult" runat ="server" Height ="105px" TextMode ="MultiLine" Width ="414px" ></ asp:TextBox >
                 </ td >
             </ tr >
         </ table >
         < br />
     </ form >
</ body >
</ html >