Searching \ for '[EE] And you tought you were safe...' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=you+tought+you+were
Search entire site for: 'And you tought you were safe...'.

Exact match. Not showing close matches.
PICList Thread
'[EE] And you tought you were safe...'
2008\02\29@090713 by Enki

picon face

       http://www.youtube.com/watch?v=JDaicPIgn9U

2008\02\29@110334 by Peter Todd

picon face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Fri, Feb 29, 2008 at 11:05:31AM -0300, Enki wrote:
>
>        http://www.youtube.com/watch?v=JDaicPIgn9U

It gets worse. With a special firewire or USB-2 device you can simply
dump the entierty of the computers memory at will using the DMA
interface. More recent AMD chips have a mechanism to protect from that
attact, essentially extending process memory protection to external
devices, but most don't. Assuming that brand new protection works might
be wrong too.

A SDRAM chip with built-in zeroization would be very nice.

- --
http://petertodd.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHyCv03bMhDbI9xWQRAn9XAKCefr5tbeNKkgZCpqcIU3T0jZV1VgCgj+TL
q8hjRcgu/U8rTd1leTghN3w=
=PY5A
-----END PGP SIGNATURE-----

2008\02\29@133325 by Martin

face
flavicon
face
Peter Todd wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Fri, Feb 29, 2008 at 11:05:31AM -0300, Enki wrote:
>  
>>        http://www.youtube.com/watch?v=JDaicPIgn9U
>>    
>
> It gets worse. With a special firewire or USB-2 device you can simply
> dump the entierty of the computers memory at will using the DMA
> interface. More recent AMD chips have a mechanism to protect from that
> attact, essentially extending process memory protection to external
> devices, but most don't. Assuming that brand new protection works might
> be wrong too.
>
> A SDRAM chip with built-in zeroization would be very nice.
>
>  

It would have to work whenever power is cut, but how would it do that?
-
Martin

2008\02\29@183009 by William \Chops\ Westfield

face picon face

On Feb 29, 2008, at 10:33 AM, Martin wrote:

>> A SDRAM chip with built-in zeroization would be very nice.
>>
> It would have to work whenever power is cut, but how would it do that?

Much easier to scramble at power-ON...

BillW


'[EE] And you tought you were safe...'
2008\03\01@201217 by Peter Todd
picon face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Fri, Feb 29, 2008 at 01:33:03PM -0500, Martin wrote:
{Quote hidden}

Usual way is to include a backup capacitor that provides a second or so
of power for the zeroization hardware. Pretty standard stuff for
high-security co-processors like IBM's 4xxx something one.

- --
http://petertodd.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHyfsO3bMhDbI9xWQRAolZAJwPypKsg/HgCH5Tk/XeG0/SOdQL9gCgrs2E
IxcG42hGDdY08aeTUKKjtok=
=PLnc
-----END PGP SIGNATURE-----

More... (looser matching)
- Last day of these posts
- In 2008 , 2009 only
- Today
- New search...