Programming Forums - password box

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- - password box (http://www.programmingforums.org/showthread.php?t=7001)

well im following this guide and this code does not seem to work it keeps giving me error, the guide is telling me to make a password box. some error at the first line..

im following this tutorial http://cuinl.tripod.com/tutorials/f-45.htm

Private Sub Form_Load()     

Dim password As String

password = InputBox("Please enter the password")

If (password = "let me in") Or (password = "sam sent me") Then

MsgBox "The password is correct!"

Else

MsgBox "incorrect password!"

End

End If

Quote:

Originally Posted by ragenuub

  

Dim password As Integer

...

If (password = "let me in") Or (password = "sam sent me") Then

First off password won't ever end up equaling a string value since it's being dimed as an integer (unless VB does some weird type change I'm not familiar with.)

note:The tutorial code even Dims password as a string :D

-MBirchmeier

ahh typo, fixed that but it still does the same thing O.o

it says

"Compile error
expected End Sub"

then marks

Quote:

Private Sub Form_Load()

with yellow

Bear in mind that if this is actually going in for real life use, and is protecting sensitive information, it could be trivially defeated.

If you actually designing this for a public system or something and want this to be secure in any way or robust enough for public exposure, you firstly need to authenticate by comparing hashes rather than values directly (you are opening yourself to memory inspection and disassembly attacks).

Also protect the variable address using the RTL Api (VarPtr) and call SecureZeroMemoryW on it when you are finished (under Windows), as the garbage collection in VB6 is notoriously bad and sometimes doesn't happen. Consult the NTLM reference on MSDN, as it has good documentation on general memory sanitization in VB6.

Alternatively use a language that deals with memory properly, or use an purpose built external authentication system.

Quote:

Originally Posted by Rory

umm im quit newb i didnt get much of that information O.o, but ill look into it for the future. It's not for any real life use just for fun, thanks tho. so anyone know why it says that error? is the tutorial missing something?

::edit::

figured it out

   End

End If

End Sub

had to add that to the end

Hard questions around here... :)