我需要在asp.net页面之间传递值。如何加密URL中的这些值？ 示例：Response.Redirect（“customerAdd.aspx？customerId =”+ custId）;
答案 0 :(得分：12)
查看Mads Kristensen's文章，了解将加密/解密所有查询字符串的HttpModule。 http://madskristensen.net/post/httpmodule-for-query-string-encryption
他的代码使用HttpModule来解析传出的HTML以加密和替换所有相对路径查询字符串。 HttpModule还捕获传入的请求并重写请求URL以使用未加密的查询字符串。
很好的部分是你可以放入模块，你的代码不需要知道查询字符串何时加密。从代码的角度来看，查询字符串就像以往一样。
我们已经使用它超过五年了，效果很好。
答案 1 :(得分：3)
使用完全加密为您完成的愚蠢的长代码文件：
我建议使用SessionID作为salt，然后它会针对每个用户进行更改，但在回发期间保持稳定。
///////////////////////////////////////////////////////////////////////////////
// SAMPLE: Symmetric key encryption and decryption using Rijndael algorithm.
//
// To run this sample, create a new Visual C# project using the Console
// Application template and replace the contents of the Class1.cs file with
// the code below.
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//
// Copyright (C) 2002 Obviex(TM). All rights reserved.
//
using System;
using System.IO;
using System.Text;
using System.Security.Cryptography;
namespace TDX.Portal.Utilities
{
/// <summary>
/// This class uses a symmetric key algorithm (Rijndael/AES) to encrypt and
/// decrypt data. As long as encryption and decryption routines use the same
/// parameters to generate the keys, the keys are guaranteed to be the same.
/// The class uses static functions with duplicate code to make it easier to
/// demonstrate encryption and decryption logic. In a real-life application,
/// this may not be the most efficient way of handling encryption, so - as
/// soon as you feel comfortable with it - you may want to redesign this class.
/// </summary>
public class RijndaelSimple
{
/// <summary>
/// Encrypts specified plaintext using Rijndael symmetric key algorithm
/// and returns a base64-encoded result.
/// </summary>
/// <param name="plainText">
/// Plaintext value to be encrypted.
/// </param>
/// <param name="passPhrase">
/// Passphrase from which a pseudo-random password will be derived. The
/// derived password will be used to generate the encryption key.
/// Passphrase can be any string. In this example we assume that this
/// passphrase is an ASCII string.
/// </param>
/// <param name="saltValue">
/// Salt value used along with passphrase to generate password. Salt can
/// be any string. In this example we assume that salt is an ASCII string.
/// </param>
/// <param name="hashAlgorithm">
/// Hash algorithm used to generate password. Allowed values are: "MD5" and
/// "SHA1". SHA1 hashes are a bit slower, but more secure than MD5 hashes.
/// </param>
/// <param name="passwordIterations">
/// Number of iterations used to generate password. One or two iterations
/// should be enough.
/// </param>
/// <param name="initVector">
/// Initialization vector (or IV). This value is required to encrypt the
/// first block of plaintext data. For RijndaelManaged class IV must be
/// exactly 16 ASCII characters long.
/// </param>
/// <param name="keySize">
/// Size of encryption key in bits. Allowed values are: 128, 192, and 256.
/// Longer keys are more secure than shorter keys.
/// </param>
/// <returns>
/// Encrypted value formatted as a base64-encoded string.
/// </returns>
public static string Encrypt(string plainText,
string passPhrase,
string saltValue,
string hashAlgorithm,
int passwordIterations,
string initVector,
int keySize)
{
// Convert strings into byte arrays.
// Let us assume that strings only contain ASCII codes.
// If strings include Unicode characters, use Unicode, UTF7, or UTF8
// encoding.
byte[] initVectorBytes = Encoding.UTF8.GetBytes(initVector);
byte[] saltValueBytes = Encoding.UTF8.GetBytes(saltValue);
// Convert our plaintext into a byte array.
// Let us assume that plaintext contains UTF8-encoded characters.
byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
// First, we must create a password, from which the key will be derived.
// This password will be generated from the specified passphrase and
// salt value. The password will be created using the specified hash
// algorithm. Password creation can be done in several iterations.
PasswordDeriveBytes password = new PasswordDeriveBytes(
passPhrase,
saltValueBytes,
hashAlgorithm,
passwordIterations);
// Use the password to generate pseudo-random bytes for the encryption
// key. Specify the size of the key in bytes (instead of bits).
byte[] keyBytes = password.GetBytes(keySize / 8);
// Create uninitialized Rijndael encryption object.
RijndaelManaged symmetricKey = new RijndaelManaged();
// It is reasonable to set encryption mode to Cipher Block Chaining
// (CBC). Use default options for other symmetric key parameters.
symmetricKey.Mode = CipherMode.CBC;
// Generate encryptor from the existing key bytes and initialization
// vector. Key size will be defined based on the number of the key
// bytes.
ICryptoTransform encryptor = symmetricKey.CreateEncryptor(
keyBytes,
initVectorBytes);
// Define memory stream which will be used to hold encrypted data.
MemoryStream memoryStream = new MemoryStream();
// Define cryptographic stream (always use Write mode for encryption).
CryptoStream cryptoStream = new CryptoStream(memoryStream,
encryptor,
CryptoStreamMode.Write);
// Start encrypting.
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
// Finish encrypting.
cryptoStream.FlushFinalBlock();
// Convert our encrypted data from a memory stream into a byte array.
byte[] cipherTextBytes = memoryStream.ToArray();
// Close both streams.
memoryStream.Close();
cryptoStream.Close();
// Convert encrypted data into a base64-encoded string.
string cipherText = Convert.ToBase64String(cipherTextBytes);
// Return encrypted string.
return cipherText;
}
/// <summary>
/// Decrypts specified ciphertext using Rijndael symmetric key algorithm.
/// </summary>
/// <param name="cipherText">
/// Base64-formatted ciphertext value.
/// </param>
/// <param name="passPhrase">
/// Passphrase from which a pseudo-random password will be derived. The
/// derived password will be used to generate the encryption key.
/// Passphrase can be any string. In this example we assume that this
/// passphrase is an ASCII string.
/// </param>
/// <param name="saltValue">
/// Salt value used along with passphrase to generate password. Salt can
/// be any string. In this example we assume that salt is an ASCII string.
/// </param>
/// <param name="hashAlgorithm">
/// Hash algorithm used to generate password. Allowed values are: "MD5" and
/// "SHA1". SHA1 hashes are a bit slower, but more secure than MD5 hashes.
/// </param>
/// <param name="passwordIterations">
/// Number of iterations used to generate password. One or two iterations
/// should be enough.
/// </param>
/// <param name="initVector">
/// Initialization vector (or IV). This value is required to encrypt the
/// first block of plaintext data. For RijndaelManaged class IV must be
/// exactly 16 ASCII characters long.
/// </param>
/// <param name="keySize">
/// Size of encryption key in bits. Allowed values are: 128, 192, and 256.
/// Longer keys are more secure than shorter keys.
/// </param>
/// <returns>
/// Decrypted string value.
/// </returns>
/// <remarks>
/// Most of the logic in this function is similar to the Encrypt
/// logic. In order for decryption to work, all parameters of this function
/// - except cipherText value - must match the corresponding parameters of
/// the Encrypt function which was called to generate the
/// ciphertext.
/// </remarks>
public static string Decrypt(string cipherText,
string passPhrase,
string saltValue,
string hashAlgorithm,
int passwordIterations,
string initVector,
int keySize)
{
// Convert strings defining encryption key characteristics into byte
// arrays. Let us assume that strings only contain ASCII codes.
// If strings include Unicode characters, use Unicode, UTF7, or UTF8
// encoding.
byte[] initVectorBytes = Encoding.UTF8.GetBytes(initVector);
byte[] saltValueBytes = Encoding.UTF8.GetBytes(saltValue);
// Convert our ciphertext into a byte array.
byte[] cipherTextBytes = Convert.FromBase64String(cipherText);
// First, we must create a password, from which the key will be
// derived. This password will be generated from the specified
// passphrase and salt value. The password will be created using
// the specified hash algorithm. Password creation can be done in
// several iterations.
PasswordDeriveBytes password = new PasswordDeriveBytes(
passPhrase,
saltValueBytes,
hashAlgorithm,
passwordIterations);
// Use the password to generate pseudo-random bytes for the encryption
// key. Specify the size of the key in bytes (instead of bits).
byte[] keyBytes = password.GetBytes(keySize / 8);
// Create uninitialized Rijndael encryption object.
RijndaelManaged symmetricKey = new RijndaelManaged();
// It is reasonable to set encryption mode to Cipher Block Chaining
// (CBC). Use default options for other symmetric key parameters.
symmetricKey.Mode = CipherMode.CBC;
// Generate decryptor from the existing key bytes and initialization
// vector. Key size will be defined based on the number of the key
// bytes.
ICryptoTransform decryptor = symmetricKey.CreateDecryptor(
keyBytes,
initVectorBytes);
// Define memory stream which will be used to hold encrypted data.
MemoryStream memoryStream = new MemoryStream(cipherTextBytes);
// Define cryptographic stream (always use Read mode for encryption).
CryptoStream cryptoStream = new CryptoStream(memoryStream,
decryptor,
CryptoStreamMode.Read);
// Since at this point we don't know what the size of decrypted data
// will be, allocate the buffer long enough to hold ciphertext;
// plaintext is never longer than ciphertext.
byte[] plainTextBytes = new byte[cipherTextBytes.Length];
// Start decrypting.
int decryptedByteCount = cryptoStream.Read(plainTextBytes,
0,
plainTextBytes.Length);
// Close both streams.
memoryStream.Close();
cryptoStream.Close();
// Convert decrypted data into a string.
// Let us assume that the original plaintext string was UTF8-encoded.
string plainText = Encoding.UTF8.GetString(plainTextBytes,
0,
decryptedByteCount);
// Return decrypted string.
return plainText;
}
}
}
答案 2 :(得分：2)
答案 3 :(得分：1)
创建键/值对字符串。加密它。 Base64吧。现在，只需要一个名为“x”的查询字符串变量或其他东西，该值将是Base64字符串，如下所示：
domain.com/MyPage?x=hfjhwke878979blahblah
然后，您解密并使用它并将其重新放回键/值数据结构中。 这是一种方法。
答案 4 :(得分：0)
您可以使用内置的.NET加密工具加密字符串。您需要在字符串上使用Server.HtmlEncode / Server.HtmlDecode以确保加密字符串符合HTTP。
Here是一篇关于.NET加密的文章。
答案 5 :(得分：0)
假设您有一个网址：
www.example.com/customerAdd.aspx?customerId=custId&password=weak
你可以做的是取字符串“ customerId = custId＆amp; password = weak ”，用密钥对其进行加密，将得到的密文编码为base64，现在URL变为（类似） ：
www.example.com/customerAdd.aspx?s=KJADSN1234kNmnanjnads
请记住将加密密钥存储在服务器端。不要将它发送到客户端。
现在，如果您对所有加密会话使用相同的密钥，则可以重新使用该URL。即，您可以将URL发送给其他人，他们可以访问同一页面。但是这种方案会降低加密的安全性。
如果更改每个会话的加密密钥，则会增加安全性，但会话关闭后URL将无效。
答案 6 :(得分：0)
尝试构建像the one on this page这样的脚本块。
它允许您添加一个简单的类，并使用简单的密码加密/解密字符串。 您可以使用Session.SessionID作为密码。请注意，一旦用户关闭他/她的浏览器窗口，链接就不再起作用了。
注意：TripleDES不太安全，请参阅this Microsoft文章
答案 7 :(得分：0)
您可以在 https://www.code2night.com/Blog/MyBlog/Url-Encryption-in-AspNet-MVC 处查看 Asp.Net MVC 中的 url enryption，它将解释使用自定义 Html Helpers 和 Filter Attribute 的 url 加密。