快速业务通道

ASP.NET对URL加密解密

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-04-12

using System.Security.Cryptography;
using System.IO;
using System.text;

/// <summary>
        /// 加密
        /// </summary>
        /// <param name="str"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string Encode(string str, string key)
         {
             DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
             provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
             provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
            byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(str);
             MemoryStream stream = new MemoryStream();
             CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write);
             stream2.Write(bytes, 0, bytes.Length);
             stream2.FlushFinalBlock();
             StringBuilder builder = new StringBuilder();
            foreach (byte num in stream.ToArray())
             {
                 builder.AppendFormat("{0:X2}", num);
             }
             stream.Close();
            return builder.ToString();
         }

        /// <summary>
        /// Des 解密 GB2312
        /// </summary>
        /// <param name="str">Desc string</param>
        /// <param name="key">Key ,必须为8位 </param>
        /// <returns></returns>
        public static string Decode(string str, string key)
         {
             DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
             provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
             provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
            byte[] buffer = new byte[str.Length / 2];
            for (int i = 0; i < (str.Length / 2); i++)
             {
                int num2 = Convert.ToInt32(str.Substring(i * 2, 2), 0x10);
                 buffer[i] = (byte)num2;
             }
             MemoryStream stream = new MemoryStream();
             CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(), CryptoStreamMode.Write);
             stream2.Write(buffer, 0, buffer.Length);
             stream2.FlushFinalBlock();
             stream.Close();
            return Encoding.GetEncoding("GB2312").GetString(stream.ToArray());
         }

调用方法
/// <summary>
        /// If don''t input key , Use default key
        /// Des 加密 GB2312 :
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string Encode(string str)
        {
            return VerifyTool.Encode(str, "Rainight");
        }
        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string Decode(string str)
        {
            return VerifyTool.Decode(str, "Rainight");
        }

凌众科技专业提供服务器租用、服务器托管、企业邮局、虚拟主机等服务,公司网站:http://www.lingzhong.cn 为了给广大客户了解更多的技术信息,本技术文章收集来源于网络,凌众科技尊重文章作者的版权,如果有涉及你的版权有必要删除你的文章,请和我们联系。以上信息与文章正文是不可分割的一部分,如果您要转载本文章,请保留以上信息,谢谢!

分享到: 更多

Copyright ©1999-2011 厦门凌众科技有限公司 厦门优通互联科技开发有限公司 All rights reserved

地址(ADD):厦门软件园二期望海路63号701E(东南融通旁) 邮编(ZIP):361008

电话:0592-5908028 传真:0592-5908039 咨询信箱:web@lingzhong.cn 咨询OICQ:173723134

《中华人民共和国增值电信业务经营许可证》闽B2-20100024  ICP备案:闽ICP备05037997号