使用ASP.Net加密Cookie

發布: 2008-4-09 12:52 | 作者: ASP.NET網絡數據庫 | 來源: 希賽網 | 查看: 121次 | 進入軟件測試論壇討論

CryptoStream cryptoStream = new CryptoStream(memoryStream,
    triprovider.CreateEncryptor(Key64,IV64),
    CryptoStreamMode.Read);
    //定義讀IO流
    StreamReader readerStream = new StreamReader(cryptoStream);
    //返回解密后的字符串
    return(readerStream.ReadToEnd());
    }
    return(null);
    }
    }

    3．創建處理Cookie的類CookieEncrypt

    在應用程序Example_12_6中的類文件EncryptString.cs中添加類CookieEncrypt，該類用來處理應用程序的Cookie，如加密Cookie、獲取Cookie、解密Cookie等。類CookieEncrypt的程序代碼如下：
    public class CookieEncrypt
    {
    public static void SetCookie(HttpCookie cookie)
    {   //設置Cookie
    HttpContext.Current.Response.Cookies.Set(cookie);
    }
    public static void SetCookie(String key,String valueString)
    {   //設置加密后的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)
    {   //設置加密后的Cookie，并設置Cookie的有效時間
    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)
    {   //設置使用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)
    {   //設置使用TripleDES加密后的Cookie，并設置Cookie的有效時間
    key = EncryptString.EncryptTripleDES(key);
    valueString = EncryptString.EncryptTripleDES(valueString);
    SetCookie(key,valueString,expires);
    }