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VB Forum / Win API / July 2009Label or Edit control to display passwords?
I guess the question is which is less secure? Seems to me that using a label to display the passwords could be read by some other program using GetWindowText(). On the other hand, an edit controls contents could be easily read by a simple WSH script using sendkeys to copy the contents of the edit control to the clipboard. Is there a better control that I don't know about? The encrypted edit control hides its contents with asterisks, but the user can't see the information. dos-man > I guess the question is which is less secure? Seems to me that using > a label to display the passwords could be read by some other program [quoted text clipped - 5 lines] > control hides its contents with asterisks, but the user can't see the > information. If you are really worried, use a Picturebox control and handle the keyboard input yourself. At least you eliminate any means to extract text. They'd have to resort to using a screen snapshot and OCR.... LFS >I guess the question is which is less secure? Seems to me that using > a label to display the passwords could be read by some other program > using GetWindowText(). Labels don't have window handles so they'd have to use an OCR application to read it off the form window. > The encrypted edit > control hides its contents with asterisks, ... http://vb.mvps.org/samples/descriptions.asp#PassSniff  SignatureRegards Michael Cole > > The encrypted edit > > control hides its contents with asterisks, ... [quoted text clipped - 5 lines] > > Michael Cole Heh, That's funny stuff. I've don't think I've ever used the masked edit control in any of my programs. It doesn't seem to do anything that you couldn't do yourself through code. And top of that it isn't one of the intrinsic controls. I try never to use any controls in my programs that require registration. I just want the exe and the runtime. One of the many reasons I never switched to VB 7 was due to the size of the runtime, which is bigger than some operating systems :D > One of the many reasons I never switched to VB 7 was due to the size > of the runtime, which is bigger than some operating systems :D ... and is available on pretty much every windows install now. :) SignatureDee Earley (dee.earley@icode.co.uk) i-Catcher Development Team iCode Systems |
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