谁给我一个cookie加密解密的类？

Question

3Q~

Answer 1

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Security.Cryptography;
using System.IO;     //记得引用这两个命名空间/// <summary>
/// EncryptString 的摘要说明
/// </summary>
public class EncryptString
{
    private static byte[] Key64 = { 42, 16, 93, 156, 78, 4, 218, 32 };
    private static byte[] IV64 = { 55, 103, 246, 79, 36, 99, 167, 3 };
    private static byte[] Key192 = {42, 16, 93, 156, 78, 4, 218, 32,15, 167, 
    44,80, 26, 250, 155, 112,2, 94, 11, 204, 119, 35, 184, 197};
    private static byte[] IV192 = {55, 103, 246, 79, 36, 99, 167, 3,42, 
    5, 62,83, 184, 7, 209, 13,145, 23, 200, 58, 173, 10, 121, 222};
    public static String Encrypt(String valueString)
    {
        if (valueString != "")
        {   //定义DES的Provider 
            DESCryptoServiceProvider desprovider =
            new DESCryptoServiceProvider();
            //定义内存流 
            MemoryStream memoryStream = new MemoryStream();
            //定义加密流 
            CryptoStream cryptoStream = new CryptoStream(memoryStream,
            desprovider.CreateEncryptor(Key64, IV64),
            CryptoStreamMode.Write);
            //定义写IO流 
            StreamWriter writerStream = new StreamWriter(cryptoStream);
            //写入加密后的字符流 
            writerStream.Write(valueString);
            writerStream.Flush();
            cryptoStream.FlushFinalBlock();
            memoryStream.Flush();
            //返回加密后的字符串 
            return (Convert.ToBase64String(memoryStream.GetBuffer(), 0, (int)memoryStream.Length));
        }
        return (null);
    }
    public static String Decrypt(String valueString)
    {
        if (valueString != "")
        {   //定义DES的Provider 
            DESCryptoServiceProvider desprovider =
            new DESCryptoServiceProvider();
            //转换解密的字符串为二进制 
            byte[] buffer = Convert.FromBase64String(valueString);
            //定义内存流 
            MemoryStream memoryStream = new MemoryStream();
            //定义加密流 
            CryptoStream cryptoStream = new CryptoStream(memoryStream,
            desprovider.CreateEncryptor(Key64, IV64),
            CryptoStreamMode.Read);
            //定义读IO流 
            StreamReader readerStream = new StreamReader(cryptoStream);
            //返回解密后的字符串 
            return (readerStream.ReadToEnd());
        }
        return (null);
    }
    public static String EncryptTripleDES(String valueString)
    {
        if (valueString != "")
        {   //定义TripleDES的Provider 
            TripleDESCryptoServiceProvider triprovider =
            new TripleDESCryptoServiceProvider();
            //定义内存流 
            MemoryStream memoryStream = new MemoryStream();
            //定义加密流 
            CryptoStream cryptoStream = new CryptoStream(memoryStream,
            triprovider.CreateEncryptor(Key192, IV192),
            CryptoStreamMode.Write);
            //定义写IO流 
            StreamWriter writerStream = new StreamWriter(cryptoStream);
            //写入加密后的字符流 
            writerStream.Write(valueString);
            writerStream.Flush();
            cryptoStream.FlushFinalBlock();
            memoryStream.Flush();
            //返回加密后的字符串 
            return (Convert.ToBase64String(memoryStream.GetBuffer(), 0, (int)memoryStream.Length));
        }
        return (null);
    }
    public static String DecryptTripleDES(String valueString)
    {
        if (valueString != "")
        {   //定义TripleDES的Provider 
            TripleDESCryptoServiceProvider triprovider =
            new TripleDESCryptoServiceProvider();
            //转换解密的字符串为二进制 
            byte[] buffer = Convert.FromBase64String(valueString);
            //定义内存流 
            MemoryStream memoryStream = new MemoryStream();
            //定义加密流            CryptoStream cryptoStream = new CryptoStream(memoryStream,
            triprovider.CreateEncryptor(Key64, IV64),
            CryptoStreamMode.Read);
            //定义读IO流 
            StreamReader readerStream = new StreamReader(cryptoStream);
            //返回解密后的字符串 
            return (readerStream.ReadToEnd());
        }
        return (null);
    }
}public class CookieEncrypt
{
    public static void SetCookie(HttpCookie cookie)
    {   //设置Cookie 
        HttpContext.Current.Response.Cookies.Set(cookie);
    }
    public static void SetCookie(String key, String valueString)
    {   //设置加密后的Cookie 
        key = HttpContext.Current.Server.UrlEncode(key);
        valueString = HttpContext.Current.Server.UrlEncode(valueString);
        HttpCookie cookie = new HttpCookie(key, valueString);
        SetCookie(cookie);
    }
    public static void SetCookie(String key, String valueString, DateTime expires)
    {   //设置加密后的Cookie，并设置Cookie的有效时间 
        key = HttpContext.Current.Server.UrlEncode(key);
        valueString = HttpContext.Current.Server.UrlEncode(valueString);
        HttpCookie cookie = new HttpCookie(key, valueString);
        cookie.Expires = expires;
        SetCookie(cookie);
    }
    public static void SetTripleDESEncryptedCookie(String key, String valueString)
    {   //设置使用TripleDES加密后的Cookie 
        key = EncryptString.EncryptTripleDES(key);
        valueString = EncryptString.EncryptTripleDES(valueString);
        SetCookie(key, valueString);
    }
    public static void SetTripleDESEncryptedCookie(String key, String valueString, DateTime expires)
    {   //设置使用TripleDES加密后的Cookie，并设置Cookie的有效时间 
        key = EncryptString.EncryptTripleDES(key);
        valueString = EncryptString.EncryptTripleDES(valueString);
        SetCookie(key, valueString, expires);
    }    public static void SetEncryptedCookie(String key, String valueString)
    {   //设置使用DES加密后的Cookie 
        key = EncryptString.Encrypt(key);
        valueString = EncryptString.Encrypt(valueString);
        SetCookie(key, valueString);
    }
    public static void SetEncryptedCookie(String key, String valueString, DateTime expires)
    {   //设置使用DES加密后的Cookie，并设置Cookie的有效时间 
        key = EncryptString.Encrypt(key);
        valueString = EncryptString.Encrypt(valueString);
        SetCookie(key, valueString, expires);
    }
    public static String GetTripleDESEncryptedCookieValue(String key)
    {   //获取使用TripleDES解密后的Cookie 
        key = EncryptString.EncryptTripleDES(key);
        String valueString = GetCookieValue(key);
        valueString = EncryptString.DecryptTripleDES(valueString);
        return (valueString);
    }
    public static String GetEncryptedCookieValue(String key)
    {   //获取使用DES解密后的Cookie 
        key = EncryptString.Encrypt(key);
        String valueString = GetCookieValue(key);
        valueString = EncryptString.Decrypt(valueString);
        return (valueString);
    }
    public static HttpCookie GetCookie(String key)
    { //通过关键字获取Cookie 
        key = HttpContext.Current.Server.UrlEncode(key);
        return (HttpContext.Current.Request.Cookies.Get(key));
    }
    public static String GetCookieValue(String key)
    {   //通过关键字获取Cookie的value 
        String valueString = GetCookie(key).Value;
        valueString = HttpContext.Current.Server.UrlDecode(valueString);
        return (valueString);
    }
}