Re: Securing data in memory

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Jim Adler (jadler@soundcode.com)
Sat, 10 Oct 1998 15:48:07 -0700


The drivers are not yet available.

Here's the status. The Windows 95 version is about done. We had planned on
doing some back testing to Win3.1 if there is significant interest. Is
there? The NT version is much tougher because you can't map ring 0 memory
space to a ring 3 process without blue screening when the ring 0 process
writes to it. We've experimented with some interesting memory mapping but
keep finding that the only way to write to such ring 0 memory is to go
through the driver which is a performance bottlneck for most performance
critical crypto algorithms. If anyone has some good ideas, I'm listening.

So, the current plan is to release a version for Win95/98 for now, possibly
in a few weeks.

Jim

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

-----Original Message-----
From: Simon R Knight <srk@tcp.co.uk>
To: CodherPlunks@toad.com <CodherPlunks@toad.com>
Date: Thursday, October 08, 1998 6:35 PM
Subject: Securing data in memory

A while back, there was a thread regarding the possibility of
securing sensitive data in memory (under Windows), with the
conclusion being that a special virtual device driver needed to be
written. I recall that "SoundCode" was planning to write such a
driver, and I'm wondering if one may now be available ?

Simon R Knight


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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:15:21