Question

我正在尝试在IIS中使用应用程序请求路由（ARR）将一组路径传递到Node.js网站。我的问题是能够在任何一方获得/设置身份验证票。

我真的需要一个加密/解密对的简单示例，它将适用于C＃和Node.js，它们开箱即用，两者结果相同。在接下来的几天里，我会在时间允许的情况下自己解决这个问题，如果没有人在我面前提出答案，我打算回答。

我的目的是将节点侧写为Node.js端的connect / express模块。我已经在ASP.Net解决方案中进行了自定义身份验证，并且可以轻松地用两个平台上安全的东西替换我当前的方法（只要它们共享相同的密钥）。

在AccountController.cs

中创建身份验证Cookie的当前代码

private void ProcessUserLogin(MyEntityModel db, SiteUser user, bool remember=false)
{
  var roles = String.Join("|", value:user.SiteRoles.Select(sr => sr.Name.ToLowerInvariant().Trim()).Distinct().ToArray());

  //update the laston record(s)
  user.UserAgent = Request.UserAgent;
  user.LastOn = DateTimeOffset.UtcNow;
  db.SaveChanges();

  // Create and tuck away the cookie
  var authTicket = new FormsAuthenticationTicket(
    1
    ,user.Username
    ,DateTime.Now
    ,DateTime.Now.AddDays(31) //max 31 days
    ,remember
    ,string.IsNullOrWhiteSpace(roles) ? "guest" : roles
  );
  var ticket = FormsAuthentication.Encrypt(authTicket);
  var cookie = new HttpCookie(FormsAuthentication.FormsCookieName, ticket);
  if (remember) cookie.Expires = DateTime.Now.AddDays(8);
  Response.Cookies.Add(cookie);
}

在Global.asax.cs

中读取身份验证Cookie的当前代码

void Application_AuthenticateRequest(object sender, EventArgs args)
{
  HttpCookie authCookie = Context.Request.Cookies[FormsAuthentication.FormsCookieName];
  if (authCookie == null) return;

  FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);

  string[] roles = authTicket.UserData.Split(new Char[] { '|' });

  //create new generic identity, and corresponding principal...
  var g = new GenericIdentity(authTicket.Name);
  var up = new GenericPrincipal(g, roles);

  //set principal for current request & thread (app will handle transitions from here)
  Thread.CurrentPrincipal = Context.User = up;
}

Web.config

的相关部分

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.web>
    <membership>
      <providers>
        <!-- Remove default provider(s), so custom override works -->
        <clear />
      </providers>
    </membership>
  </system.web>
</configuration>

Answer 1

这是使用DES算法的工作示例。 reference

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

public class Test
{
    public static string Encrypt(string toEncrypt, string key, bool useHashing) 
    {     
        byte[] keyArray;     
        byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);      

        if (useHashing)     
        {         
            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
            keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));     
        }     
        else
            keyArray = UTF8Encoding.UTF8.GetBytes(key);      

        var tdes = new TripleDESCryptoServiceProvider();
        tdes.Key = keyArray;     
        // tdes.Mode = CipherMode.CBC;  // which is default     
        // tdes.Padding = PaddingMode.PKCS7;  // which is default

        Console.WriteLine("iv: {0}", Convert.ToBase64String(tdes.IV));

        ICryptoTransform cTransform = tdes.CreateEncryptor();     
        byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0,
            toEncryptArray.Length);      
        return Convert.ToBase64String(resultArray, 0, resultArray.Length); 
    }  

    public static void Main()
    {
        Console.WriteLine("encrypted as: {0}", Encrypt("12345", "abcdefghijklmnop", false));
    }
}

输出

iv: pdMBMjdeFdo=
encrypted as: 3uDkdT6aQ3c=

在node.js中使用正确的算法 des-ede-cbc ：

var crypto = require('crypto');

var alg = 'des-ede-cbc';

var key = new Buffer('abcdefghijklmnop', 'utf-8');
var iv = new Buffer('pdMBMjdeFdo=', 'base64');

var encrypted = new Buffer('3uDkdT6aQ3c=', 'base64');
var source = '12345';

var cipher = crypto.createCipheriv(alg, key, iv);
var encoded = cipher.update(source, 'ascii', 'base64');
encoded += cipher.final('base64');

console.log(encoded, encrypted.toString('base64'));

var decipher = crypto.createDecipheriv(alg, key, iv);
var decoded = decipher.update(encrypted, 'binary', 'ascii');
decoded += decipher.final('ascii');

console.log(decoded, source);

输出

3uDkdT6aQ3c= 3uDkdT6aQ3c=
12345 12345

Answer 2

@xiaoyi答案是正确的。另外，我只是添加了一些清晰的详细代码。

在C＃中使用DES算法加密

  public static string EncryptTest(string toEncrypt, string key, bool useHashing)
        {
            byte[] keyArray;
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
            byte[] initVectorBytes = Encoding.ASCII.GetBytes("$secure#");

            if (useHashing)
            {
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
            }
            else
                keyArray = UTF8Encoding.UTF8.GetBytes(key);

            var tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.CBC;  // which is default     
            tdes.Padding = PaddingMode.PKCS7;  // which is default
            tdes.IV = initVectorBytes;

            ICryptoTransform cTransform = tdes.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0,
                toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

当EncryptTest("1234", "abcdefghijklmnop", false)输出时：GD/JSd91ZnQ=

在nodejs中使用DES算法进行加密

var algorithm = 'des-ede-cbc';

function encryption(plainText) {

    var key = new Buffer.from("abcdefghijklmnop", 'utf-8');
    var iv = new Buffer.from("$secure#", "ascii");

    var cipher = crypto.createCipheriv(algorithm, key, iv);
    var encoded = cipher.update(plainText, 'ascii', 'base64');
    encoded += cipher.final('base64');

    console.log(encoded);

    return encoded;
}

当encryption("1234")输出时：GD/JSd91ZnQ=

节点：new Buffer('', '')已过时。我将其替换为new Buffer.from()

在C＃中使用DES算法解密

public static string DecryptTest(string cipherString, string key, bool useHashing)
        {
            byte[] keyArray;
            byte[] toEncryptArray = Convert.FromBase64String(cipherString);
            byte[] initVectorBytes = Encoding.ASCII.GetBytes("$secure#");

            if (useHashing)
            {
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
            }
            else
                 keyArray = UTF8Encoding.UTF8.GetBytes(key);

            var tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.CBC;  // which is default     
            tdes.Padding = PaddingMode.PKCS7;  // which is default
            tdes.IV = initVectorBytes;

            ICryptoTransform cTransform = tdes.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return UTF8Encoding.UTF8.GetString(resultArray);
        }

当DecryptTest("GD/JSd91ZnQ=", "abcdefghijklmnop", false)输出时：1234

在nodejs中使用DES算法解密

var algorithm = 'des-ede-cbc';

function decryption(chipertext) {

   var key = new Buffer.from("abcdefghijklmnop", 'utf-8');
    var iv = new Buffer.from("$secure#", "ascii");
    var encrypted = new Buffer.from(chipertext, 'base64');

    var decipher = crypto.createDecipheriv(algorithm, key, iv);
    var decoded = decipher.update(encrypted, 'binary', 'ascii');
    decoded += decipher.final('ascii');

    console.log(decoded);

    return decoded;
}

当decryption("GD/JSd91ZnQ=")输出时：1234

有关DES algorithm的更多详细信息

C＃和Node.js / crypto的通用加密/解密代码示例

2 个答案: