[FDE] Processing Question

[Dmitry Obukhov]

Hi Lance,

1. No, drives are not using any CPU resources. The encryption is done inside
the drive and transparent to the host.

2. Drive has no idea about "files". The encryption is done on the sector
level.

WBR,

Dmitry Obukhov

-----Original Message-----
From: fde-bounces at www.xml-dev.com [mailto:fde-bounces at www.xml-dev.com] On
Behalf Of Lance Spitzner
Sent: Tuesday, June 03, 2008 8:44 AM
To: fde at www.xml-dev.com
Subject: [FDE] Processing Question

Two FDE questions.  This applies specifically to hard drive FDE, such  
as the Fujitsu MHZ2 CJ series or the Seagate Momentus 5400.2 FDE.

1.  Encryption Processing.  I know the keys are stored on the drives,  
but do the drives also have their own chips for the actual encrypting/ 
decrypting, or do they use any of the laptops CPU for the actual  
processing?

2. Is each file encrypted to the hd as its own, unique seperate file,  
or is there some other process used?

Thanks!

lance
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