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ASP.NET中用MD5和SHA1算法加密
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作者:iiboy 发布时间:2005-4-7 17:12:21 | 【字体: 大 中 小】
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你的主页或者你管理的网站有各种密码需要保护,把密码直接放在数据库或者文件中存在不少安全隐患,所以密码加密后存储是最常见的做法。在ASP.NET中实现加密非常容易。.NET SDK中提供了CookieAuthentication类,其中的HashPasswordForStoringInConfigFile方法可直接使用MD5和SHA1算法。例子如下:
file: encrypting.aspx
<%@ Page language="c#" Codebehind="encrypting.cs" AutoEventWireup="false" Inherits="encrypting.encrypting" %> <html><head> <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0"> <meta name="CODE_LANGUAGE" Content="C#"></head> <body>
<form method="post" runat="server">
<asp:TextBox id=TextBox1 runat="server"></asp:TextBox> <asp:Button id=Button1 runat="server" Text="encrypting"></asp:Button> Encrypting Password(MD5): <asp:Label id=MD5 runat="server"></asp:Label> </form>
</body></html>
file:encrypting.cs
namespace encrypting { using System; using System.Collections; using System.ComponentModel; using System.Data; 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.Web.Security; /// <summary> /// Summary description for encrypting. /// </summary> public class encrypting : System.Web.UI.Page { protected System.Web.UI.WebControls.Label MD5; protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.TextBox TextBox1;
public encrypting() { Page.Init += new System.EventHandler(Page_Init); } protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { // // Evals true first time browser hits the page // } } protected void Page_Init(object sender, EventArgs e) { // // CODEGEN: This call is required by the ASP+ Windows Form Designer. // InitializeComponent(); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { Button1.Click += new System.EventHandler (this.Button1_Click); this.Load += new System.EventHandler (this.Page_Load); } public void Button1_Click (object sender, System.EventArgs e) { MD5.Text = CookieAuthentication.HashPasswordForStoringInConfigFile(TextBox1.Text,"MD5"); //SHA1 use CookieAuthentication.HashPasswordForStoringInConfigFile(TextBox1.Text,"SHA1"); } } } | 注意:类CookieAuthentication的namespace是System.Web.Security。
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