cookie读写加密中文字符代码,Asp.Net代码库,德仔网

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【Asp.Net】 cookie读写加密中文字符
作者:dezai / 发布于2014/2/25/ 223
代码

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->//加密 Cookies
Response.Cookies["askCRM"]["USERID"] = Tools.Encrypt(strUserName.Trim(), Tools.myKey);
//解密
string strUid = Request.Cookies["askCRM"]["USERID"];
strUid = Tools.Decrypt(strUid, Tools.myKey);

加密解密 掉用的方法
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;
using System.Text;

/// <summary>
/// Tools 的摘要说明


/// </summary>
public class Tools
{
 

  /// <summary>
  /// 当前程序加密所使用的密钥

  /// </summary>
  public static readonly string myKey = "q0m3sd8l";

  #region 加密方法
  /// <summary>
  /// 加密方法
  /// </summary>
  /// <param name="pToEncrypt">需要加密字符串</param>
  /// <param name="sKey">密钥</param>
  /// <returns>加密后的字符串</returns>
  public static string Encrypt(string pToEncrypt, string sKey)
  {
    try
    {
      DESCryptoServiceProvider des = new DESCryptoServiceProvider();
      //把字符串放到byte数组中


      //原来使用的UTF8编码，我改成Unicode编码了，不行
      byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);

      //建立加密对象的密钥和偏移量


      //使得输入密码必须输入英文文本
      des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
      des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
      MemoryStream ms = new MemoryStream();
      CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);

      cs.Write(inputByteArray, 0, inputByteArray.Length);
      cs.FlushFinalBlock();
      StringBuilder ret = new StringBuilder();
      foreach (byte b in ms.ToArray())
      {
        ret.AppendFormat("{0:X2}", b);
      }
      ret.ToString();
      return ret.ToString();
    }
    catch (Exception ex)
    {
      JS.Alert("写入配置信息失败，详细信息：" + ex.Message.Replace("\r\n", "").Replace("'", ""));
    }

    return "";
  }
  #endregion

  #region 解密方法
  /// <summary>
  /// 解密方法
  /// </summary>
  /// <param name="pToDecrypt">需要解密的字符串</param>
  /// <param name="sKey">密匙</param>
  /// <returns>解密后的字符串</returns>
  public static string Decrypt(string pToDecrypt, string sKey)
  {
    try
    {
      DESCryptoServiceProvider des = new DESCryptoServiceProvider();
      byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
      for (int x = 0; x < pToDecrypt.Length / 2; x++)
      {
        int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
        inputByteArray[x] = (byte)i;
      }

      //建立加密对象的密钥和偏移量，此值重要，不能修改
      des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
      des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
      MemoryStream ms = new MemoryStream();
      CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
      cs.Write(inputByteArray, 0, inputByteArray.Length);
      cs.FlushFinalBlock();
      //建立StringBuild对象，CreateDecrypt使用的是流对象，必须把解密后的文本变成流对象
      StringBuilder ret = new StringBuilder();
      return System.Text.Encoding.Default.GetString(ms.ToArray());
    }
    catch (Exception ex)
    {
      JS.Alert("读取配置信息失败，详细信息：" + ex.Message.Replace("\r\n", "").Replace("'", ""));
    }
    return "";
  }
  #endregion
}
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