引用：https://blog.csdn.net/angle_greensky110/article/details/48293653?utm_medium=distribute.pc_relevant_download.none-task-blog-BlogCommendFromBaidu-1.nonecase&depth_1-utm_source=distribute.pc_relevant_download.none-task-blog-BlogCommendFromBaidu-1.nonecas
源码下载地址：js前台加密传输到后台c#解密
前提条件：
1、添加3个js，在代码crypto文件夹中
2、添加4个类文件，在代码App_Code\Migrated文件夹中
3、两个加密解密文件，在代码MyXml文件夹中
前台代码：
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="LoginNew.aspx.cs" Inherits="LoginNew" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head runat="server">
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<title>Untitled Page</title>
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<script language="javascript" src="crypto/BigInt.js"></script>
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<script language="javascript" src="crypto/Barrett.js"></script>
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<script language="javascript" src="crypto/RSA.js"></script>
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<script language="javascript">
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function cmdEncrypt()
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{
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setMaxDigits(131);
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//这句话在我的代码里面放在这里head之间会报错，把cmdEncrypt()方法移到body上执行不会报错
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var key = new RSAKeyPair("<%=GetRSA_E()%>", "", "<%=GetRSA_M()%>");
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document.getElementById("posx").value = encryptedString(key,base64encode(document.getElementById("txtUserName").value) + "\\" + base64encode(document.getElementById("txtPassword").value));
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document.getElementById("txtPassword").value="";
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return;
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}
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function base64encode(str) {
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var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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var base64DecodeChars = new Array(
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
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-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
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-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
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41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);
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var out, i, len;
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var c1, c2, c3;
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len = str.length;
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i = 0;
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out = "";
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while(i < len) {
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c1 = str.charCodeAt(i++) & 0xff;
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if(i == len)
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{
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out += base64EncodeChars.charAt(c1 >> 2);
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out += base64EncodeChars.charAt((c1 & 0x3) << 4);
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out += "==";
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break;
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}
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c2 = str.charCodeAt(i++);
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if(i == len)
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{
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out += base64EncodeChars.charAt(c1 >> 2);
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out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
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out += base64EncodeChars.charAt((c2 & 0xF) << 2);
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out += "=";
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break;
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}
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c3 = str.charCodeAt(i++);
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out += base64EncodeChars.charAt(c1 >> 2);
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out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
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out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
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out += base64EncodeChars.charAt(c3 & 0x3F);
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}
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return out;
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}
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</script>
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</head>
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<body>
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<form id="Form1" method="post" runat="server">
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<table width="100%" cellpadding="0" cellspacing="0">
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<tr>
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<td align="right" height="28" nowrap>
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</td>
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</tr>
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</table>
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<table width="100%" cellpadding="3" cellspacing="0" style="background-color: white">
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<tr>
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<td>
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<span>Log On to APPa</span>
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<br>
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<hr size="1">
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</td>
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</tr>
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</table>
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<table width="100%" cellpadding="3" cellspacing="0" >
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<tr>
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<td>
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<br>
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Please enter your user name and password:<br>
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<hr size="1">
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</td>
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</tr>
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<tr>
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<td>
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<table cellpadding="0" cellspacing="1">
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<tr>
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<td>
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User Name:</td>
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<td width="20">
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</td>
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<td>
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<asp:TextBox EnableViewState="False" MaxLength="30" ID="txtUserName" runat="server"
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Width="200px"></asp:TextBox></td>
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<td>
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</td>
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</tr>
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<tr>
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<td>
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Password:</td>
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<td width="20">
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</td>
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<td>
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<asp:TextBox EnableViewState="False" MaxLength="30" ID="txtPassword" runat="server"
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TextMode="Password" Width="200px"></asp:TextBox></td>
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<td>
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</td>
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</tr>
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<tr>
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<td colspan="2">
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<td align="left">
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<table cellpadding="0" >
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<tr>
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<td class="">
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<div class="">
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<input type="button" id="btnLogin" runat="Server" value="Login" οnclick="javascript:cmdEncrypt();"
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name="btnLogin" onserverclick="btnLogin_ServerClick">
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</div>
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</td>
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</tr>
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</table>
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</td>
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<td>
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</td>
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<td>
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</tr>
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</table>
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<asp:Label ID="lblMsg" EnableViewState="False" runat="server"></asp:Label><br>
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<asp:Label ID="lblError" EnableViewState="False" runat="server" ForeColor="red"></asp:Label><br>
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<asp:HiddenField ID="posx" runat="server" />
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</td>
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</tr>
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</table>
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</form>
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</body>
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</html>
后台代码：
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using System;
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using System.Data;
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using System.Configuration;
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using System.Collections;
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using System.Web;
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using System.Web.Security;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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using System.Security.Cryptography;
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using System.IO;
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using CodeName.APPa;
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public partial class LoginNew : System.Web.UI.Page
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{
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private RSACrypto rsa = new RSACrypto();
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private RSAParameters param;
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protected void Page_Load(object sender, System.EventArgs e)
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{
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if (!IsPostBack)
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{
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GetKey.GetKeyFunction();
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}
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string path = Session["key"].ToString() + ConfigurationManager.AppSettings["rsaPrivateKeyFilePath"];
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rsa.InitCrypto(Server.MapPath("~/MyXml/") + path);
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param = rsa.ExportParameters(true);
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}
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protected string GetRSA_E()
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{
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return StringHelper.BytesToHexString(param.Exponent);
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}
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protected string GetRSA_M()
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{
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return StringHelper.BytesToHexString(param.Modulus);
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}
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protected void btnLogin_ServerClick(object sender, System.EventArgs e)
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{
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string tmp = StringHelper.ASCIIBytesToString(rsa.Decrypt(StringHelper.HexStringToBytes(Request.Params["posx"])));
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string[] parts = tmp.Split('\\');
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string username = StringHelper.ASCIIBytesToString(StringHelper.FromBase64(parts[0]));
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string password = StringHelper.ASCIIBytesToString(StringHelper.FromBase64(parts[1]));
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}
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}
webconfig配置文件：在appSettings节点中加入这3句话
<appSettings>
<add key="authDomainServer" value="SERVERa"/>
<add key="rsaPublicKeyFilePath" value="private.xml"/>
<add key="rsaPrivateKeyFilePath" value="private.xml"/>
</appSettings>
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