URL传输参数加密解密

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};public string Encrypt(string strText){ try {  DESCryptoServiceProvider des = new DESCryptoServiceProvider();  Byte[] inputByteArray  = Encoding.UTF8.GetBytes(strText);  MemoryStream ms = new MemoryStream();  CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey64, Iv64), CryptoStreamMode.Write);  cs.Write(inputByteArray, 0, inputByteArray.Length);  cs.FlushFinalBlock();  return Convert.ToBase64String(ms.ToArray()); } catch(Exception ex) {  return ex.Message; }}

private void btnLogin_Click(object sender, System.Web.UI.ImageClickEventArgs e){ DateTime nowTime = DateTime.Now; string postUser = txtUser.Text.ToString(); string postPass = 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};

public string Decrypt(string strText){Byte[] inputByteArray = new byte[strText.Length];try{ DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(strText); MemoryStream  ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey64, Iv64), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); System.Text.Encoding encoding = System.Text.Encoding.UTF8; return encoding.GetString(ms.ToArray());}catch(Exception ex){ return ex.Message;}}

private void Page_Load(object sender, System.EventArgs e){ if(Request.Params["clubID"]!=null) {  string originalValue = Request.Params["clubID"];  originalValue = originalValue.Replace(" ","+");  //+号通过url传递变成了空格。  string decryptResult = Decrypt(originalValue);  //DecryptString(string)解密字符串  string delimStr = ",";  char[] delimiterArray = delimStr.ToCharArray();  string [] userInfoArray = null;  userInfoArray = decryptResult.Split(delimiterArray);  string userName = userInfoArray[0];

  User userToLogin = new User();  userToLogin.Username = userInfoArray[0];  userToLogin.Password = userInfoArray[1];  ...... }}