[144599] in cryptography@c2.net mail archive
Re: Intercepting Microsoft wireless keyboard communications
daemon@ATHENA.MIT.EDU (travis+ml-cryptography@subspacefie)
Fri Jul 17 14:23:44 2009
Date: Fri, 17 Jul 2009 12:34:01 -0500
From: travis+ml-cryptography@subspacefield.org
To: ji@tla.org
Cc: cryptography@metzdowd.com
Mail-Followup-To: ji@tla.org, cryptography@metzdowd.com
In-Reply-To: <475EDE6F.80209@tla.org>
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On Tue, Dec 11, 2007 at 02:01:03PM -0500, ji@tla.org wrote:
> How many bits (not just data, also preamble/postamble, sync bits, etc.) =
=20
> is the keyboard sending for each keystroke anyway?
FWIW, it is likely sending keyboard scan codes:
http://en.wikipedia.org/wiki/Scancode
It doesn't send the actual characters typed, because games and the
like need to know when keys are depressed and released, not just what
letter was typed.
Here's an overview of keyboard input under Linux:
http://www.subspacefield.org/~travis/keyboard/index.html
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