public static void ConvertPlainPasswordToHashPasswordInAllUsers()
{
TRAVEL_WEBDataContext datacontext = new TRAVEL_WEBDataContext();
var taikhoans = from t in datacontext.TAI_KHOANs select t;
foreach (TAI_KHOAN tk in taikhoans)
{
tk.Salt = CryptographicHelper.CreateSalt();
if (String.IsNullOrEmpty(tk.Password))
{
tk.Password = Membership.GeneratePassword(10, 3);
}
tk.Password = CryptographicHelper.CreatePasswordHash(tk.Password, tk.Salt);
}
datacontext.SubmitChanges();
}
public override bool ValidateUser(string username, string password)
{
TRAVEL_WEBDataContext dataContext = new TRAVEL_WEBDataContext();
var user = from u in dataContext.TAI_KHOANs
where u.Username == username
select u;
if (user.Count() == 1)
{
TAI_KHOAN tk = user.Single();
if (tk.Password.Equals(CryptographicHelper.CreatePasswordHash(password, tk.Salt)))
{
return(true);
}
}
return(false);
}
public override string ResetPassword(string username, string answer)
{
string newPassword = "";
TRAVEL_WEBDataContext dataContext = new TRAVEL_WEBDataContext();
var user = from u in dataContext.TAI_KHOANs
where u.Username == username
select u;
if (user.Count() == 1)
{
//newPassword = CryptographicHelper.GenerateKey();
newPassword = Membership.GeneratePassword(10, 3);
TAI_KHOAN tk = user.Single();
tk.Password = CryptographicHelper.CreatePasswordHash(newPassword, tk.Salt);
dataContext.SubmitChanges();
}
return(newPassword);
}
public override bool ChangePassword(string username, string oldPassword, string newPassword)
{
TRAVEL_WEBDataContext dataContext = new TRAVEL_WEBDataContext();
var user = from u in dataContext.TAI_KHOANs
where u.Username == username
select u;
if (user.Count() == 1)
{
TAI_KHOAN tk = user.Single();
oldPassword = CryptographicHelper.CreatePasswordHash(oldPassword, tk.Salt);
newPassword = CryptographicHelper.CreatePasswordHash(newPassword, tk.Salt);
if (oldPassword == tk.Password && oldPassword != newPassword)
{
tk.Password = newPassword;
dataContext.SubmitChanges();
return(true);
}
}
return(false);
}
