对Url传输参数进行加密和解密

最新推荐文章于 2024-10-12 15:46:37 发布

最新推荐文章于 2024-10-12 15:46:37 发布 · 1.1k 阅读

文章标签：

#java #ui #后端

本文介绍了一个论坛登录系统中如何使用DES加密技术保护用户的账号和密码。通过对用户输入的数据进行加密处理，确保敏感信息在URL中不可见，提高安全性。文章详细展示了加密与解密过程的代码实现。

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最近做一个论坛入口时要实现帐号和密码不在IE地址栏出现而做的

index.aspx.cs (加密处理)

Byte[]Iv64={11,22,33,44,55,66,77,85};
Byte[]byKey64={10,20,30,40,50,60,70,80};

publicstringEncrypt(stringstrText)

{

 try

 {

 DESCryptoServiceProviderdes=newDESCryptoServiceProvider();

 Byte[]inputByteArray=Encoding.UTF8.GetBytes(strText);

 MemoryStreamms=newMemoryStream();

 CryptoStreamcs=newCryptoStream(ms,des.CreateEncryptor(byKey64,Iv64), 

 CryptoStreamMode.Write);
 cs.Write(inputByteArray,0,inputByteArray.Length);
 cs.FlushFinalBlock();

 returnConvert.ToBase64String(ms.ToArray());

 }

 catch(Exceptionex)

 {

 returnex.Message;

 }
}

privatevoidbtnLogin_Click(objectsender,System.Web.UI.ImageClickEventArgse)

{
 DateTimenowTime=DateTime.Now;

 stringpostUser=txtUser.Text.ToString();

 stringpostPass=txtPassword.Text.ToString();

 Response.Redirect("Login.aspx?clubID="+Encrypt(postUser+","+postPass+",

 "+nowTime.ToString()));

}

login.aspx.cs (解密处理)

//随机选8个字节既为密钥也为初始向量

Byte[]byKey64={10,20,30,40,50,60,70,80};
Byte[]Iv64={11,22,33,44,55,66,77,85};

publicstringDecrypt(stringstrText)

{

 Byte[]inputByteArray=newbyte[strText.Length];

 try

 {

 DESCryptoServiceProviderdes=newDESCryptoServiceProvider();

 inputByteArray=Convert.FromBase64String(strText);

 MemoryStreamms=newMemoryStream();

 CryptoStreamcs=newCryptoStream(ms,des.CreateDecryptor(byKey64,Iv64),

           CryptoStreamMode.Write);
 cs.Write(inputByteArray,0,inputByteArray.Length);
 cs.FlushFinalBlock();
 System.Text.Encodingencoding=System.Text.Encoding.UTF8;

 returnencoding.GetString(ms.ToArray());

 }

 catch(Exceptionex)

 {

 returnex.Message;

 }
}

privatevoidPage_Load(objectsender,System.EventArgse)

{

 if(Request.Params["clubID"]!=null)

 {

 stringoriginalValue=Request.Params["clubID"];

 originalValue=originalValue.Replace("","+");

 //+号通过url传递变成了空格。

 stringdecryptResult=Decrypt(originalValue);

 //DecryptString(string)解密字符串

 stringdelimStr=",";

 char[]delimiterArray=delimStr.ToCharArray();

 string[]userInfoArray=null;

 userInfoArray=decryptResult.Split(delimiterArray);

 stringuserName=userInfoArray[0];

 UseruserToLogin=newUser();

 userToLogin.Username=userInfoArray[0];
 userToLogin.Password=userInfoArray[1];
 ......
 }
}