Re: Securing data in memory (was "Locking physical memory (RAM) under Windows")

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Jim Adler (jadler@soundcode.com)
Mon, 23 Nov 1998 21:04:57 -0800


Frank O'Dwyer <fod@brd.ie> wrote:

>Thanks for making this available. I have one suggestion -- as far as I
>am aware a related bug can occur when you need to obtain some secret on
>the GUI--notably a password. I believe this is because the dialog
>control for a password uses swappable memory as an edit buffer. Do you
>know if it would be possible to arrange for a dialog control to use an
>SCNSM allocated page as its edit buffer (maybe by subclassing the
>existing control?), or is this so hardcoded into Windows as to be
>unfixable?

I haven't looked into the details, but others have. I believe a thread
dealt with this about a year ago. As you point out, the first approach
would be to subclass the existing control. Another, of course, is to write
it from scratch with the same look and feel as the Windows dialog. One last
thought is to simply subclass (or rewrite) the "edit control" and not the
entire dialog.

Jim

=========
Jim Adler
Soundcode, Inc.
www.soundcode.com
425.739.2229 (voice)
425.739.2228 (fax)


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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:17:19