/// <summary>
/// register for a new account
/// </summary>
/// <param name="userName">user name</param>
/// <param name="passWd">password</param>
/// <param name="msg">the return message</param>
/// <returns>registeration is successful or not</returns>
public bool Register(string userName, string passWd, out string msg)
{
// judge the existence of the username and password
if (m_File.CheckUserExists(userName))
{
msg = "User Name has already existed!";
Console.WriteLine(msg);
return false;
}
if (m_File.CheckPasswordExists(passWd))
{
msg = "Password has already existed!";
Console.WriteLine(msg);
return false;
}
//verify the password is valid or not here
VerifyPassword passwdVerifier = new VerifyPassword();
if (!passwdVerifier.CheckPassword(passWd,out msg))
{
Console.WriteLine(msg);
return false;
}
//add salt to the password
TagAdder salt = new TagAdder(passWd);
string harshedPasswd = salt.AddSalt();
string tag = salt.GetTag();
//save username and password to the file
m_File.AddUser(userName, harshedPasswd, tag);
msg = "Successfully Create a new account!";
//Console.WriteLine(msg);
return true;
}
/// <summary>
/// Change the password of a user
/// </summary>
/// <param name="userName">user name </param>
/// <param name="pwd"> new password </param>
/// <param name="msg"> the ruturn message of this action </param>
/// <returns>success or not</returns>
public bool ChangePwd(string userName, string pwd, out string msg)
{
//verify the password is valid or not here
VerifyPassword passwdVerifier = new VerifyPassword();
if (!passwdVerifier.CheckPassword(pwd, out msg))
{
Console.WriteLine(msg);
return false;
}
//add salt to the password
TagAdder salt = new TagAdder(pwd);
string harshedPasswd = salt.AddSalt();
string tag = salt.GetTag();
//save username and password to the file
m_File.ChangePwd(userName, pwd, tag);
msg = "Successfully Change the Password!";
//Console.WriteLine(msg);
return true;
}