asp/asp.net MD5加密比较

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asp MD5加密采用动网论坛的加密算法，具体参考动网论坛 inc/md5.asp

asp.net的MD5加密算法：

public string MD5_1(string str)

{

return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(this.oldTxt.Text.Trim(), "MD5").ToLower();

}

public string MD5_2(string str)

{

System.Security.Cryptography.MD5CryptoServiceProvider hashmd5;

hashmd5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

return BitConverter.ToString(hashmd5.ComputeHash(System.Text.Encoding.Default.GetBytes(str))).Replace("-","").ToLower();

}

asp加密结果：

admin - MD5加密的结果（32位）：21232f297a57a5a743894a0e4a801fc3
中国 - 加密后结果(32)：cf0832dedf7457bbcbfa00bbd87b300a

asp.net 加密结果：

(1)加密字符串-admin，加密结果如下：

21232f297a57a5a743894a0e4a801fc3 （MD5_1）
21232f297a57a5a743894a0e4a801fc3 （MD5_2）

(2)加密字符串-中国，加密结果：

c13dceabcb143acd6c9298265d618a9f （MD5_1）
cf0832dedf7457bbcbfa00bbd87b300a （MD5_2）

asp与asp.net MD5加密结果比较总结

(1)在加密英文字符时，aspMD5加密与asp.netMD5加密结果一样。

(2)在加密中文字符或者其它双字节字符时，sp.net加密结果与字符编码有关。

更详细测试：

前台页面

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="md5.aspx.cs" Inherits="md5" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:Label ID="Label2" runat="server" Text="原始字符串"></asp:Label> 

<asp:TextBox ID="oldTxt" runat="server" Width="287px"></asp:TextBox><br />

<br />

ASP MD5加密结果(动网论坛MD5加密32位)<br />

admin 加密后结果：         21232f297a57a5a743894a0e4a801fc3<br />

admin123 加密后结果：   0192023a7bbd73250516f069df18b500<br />

admin中国加密后结果：b15d57a81157056fe4e24d89da136234<br />

中国加密后结果：         cf0832dedf7457bbcbfa00bbd87b300a<br />

<br />

ASP.NET MD5加密结果<br />

  <asp:ListBox ID="ListBox1" runat="server" Height="145px" Width="306px" ></asp:ListBox><br />

<br />

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="加密1" />

<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="加密2" /> <asp:Button

ID="Button3" runat="server" OnClick="Button3_Click" Text="加密3" /> 

<asp:Button ID="Button4" runat="server" OnClick="Button4_Click" Text="加密4" />

<asp:Button ID="Button5" runat="server" OnClick="Button5_Click" Text="清除结果" /></div>

</form>

</body>

</html>

后台代码

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class md5 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

public string MD5_1(string str)

{

return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(this.oldTxt.Text.Trim(), "MD5").ToLower();

}

public string MD5_2(string str)

{

System.Security.Cryptography.MD5CryptoServiceProvider hashmd5;

hashmd5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

return BitConverter.ToString(hashmd5.ComputeHash(System.Text.Encoding.Default.GetBytes(str))).Replace("-","").ToLower();

}

public string MD5_3(string str)

{

System.Security.Cryptography.MD5CryptoServiceProvider hashmd5;

hashmd5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

return BitConverter.ToString(hashmd5.ComputeHash(System.Text.Encoding.Unicode.GetBytes(str))).Replace("-", "").ToLower();

}

public string MD5_4(string str)

{

System.Security.Cryptography.MD5CryptoServiceProvider hashmd5;

hashmd5 = new System.Security.Cryptography.MD5CryptoServiceProvider();

return BitConverter.ToString(hashmd5.ComputeHash(System.Text.Encoding.UTF8.GetBytes(str))).Replace("-", "").ToLower();

}

protected void Button1_Click(object sender, EventArgs e)

{

this.ListBox1.Items.Add(MD5_1(oldTxt.Text.Trim()));

}

protected void Button2_Click(object sender, EventArgs e)

{

this.ListBox1.Items.Add(MD5_2(this.oldTxt.Text.Trim()));

}

protected void Button3_Click(object sender, EventArgs e)

{

this.ListBox1.Items.Add(MD5_3(this.oldTxt.Text.Trim()));

}

protected void Button4_Click(object sender, EventArgs e)

{

this.ListBox1.Items.Add(MD5_4(this.oldTxt.Text.Trim()));

}

protected void Button5_Click(object sender, EventArgs e)

{

this.ListBox1.Items.Clear();

}