3 posts in this topic

Posted

Hey guys, this is my first post so sorry if this is the wrong forum but im pretty sure im in the right place. I dont usually ask in forums because someone else where has already asked it but i have searched and searched and cannot find an answer that i am looking for.

In a nutshell, i have a very basic login form which is connected to a database [access 2003] and uses IF statements to match the username and passwords. here is the code :

Imports System.Data.OleDb

Public Class LoginForm1

Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click

Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data source = C:\Users\Admin\Desktop\Login\database.mdb")

Dim cmd As OleDbCommand = New OleDbCommand("SELECT username,password FROM table1 where username=? and password=?", con)

cmd.Parameters.AddWithValue("username", UsernameTextBox.Text)

cmd.Parameters.AddWithValue("password", PasswordTextBox.Text)

Try

con.Open()

Dim read As OleDbDataReader = cmd.ExecuteReader()

If read.HasRows Then

read.Read()

If UsernameTextBox.Text = read.Item("username").ToString And PasswordTextBox.Text = read.Item("password").ToString Then

Label1.Text = read.Item("password").ToString

Else

MsgBox("Login unsuccessful, username and passwords are case sensitive")

End If

Else

MsgBox("Login unsuccessful")

End If

read.Close()

Catch ex As Exception

MessageBox.Show(ex.Message)

Finally

con.Close()

End Try

End Sub

Now, this all works handy dandy which i was fairly chuffed at. then i thought, i might as well go all the way and encrypt it. so the plan was..

user = admin

password = 8 (inside the database) however the user chose the password 4.

when back in vb, the user enters : admin ; 4 and the program uses

"if usernametextbox.text = admin and (val(passwordtextbox.text) * 2) then form2.show

so before i go doing 128bit encryption or anything stupid.. i litrally just want to get something as simple as a multiplication password before anything more complex...

Please help me, i already have tuffs of hair missing :(

Thanks in advance and i apologise if i have not explained very well, i know what i want.. but not how to describe it :/

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Posted

Assuming you're using .NET there are built in libraries for this...

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