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Re: dangers of TCPA/palladium

daemon@ATHENA.MIT.EDU (Ben Laurie)
Sun Aug 11 11:10:24 2002

Date: Sun, 11 Aug 2002 16:03:54 +0100
From: Ben Laurie <ben@algroup.co.uk>
To: "AARG!Anonymous" <remailer@aarg.net>
Cc: adam@cypherspace.org, cypherpunks@lne.com,
	cryptography@wasabisystems.com

AARG!Anonymous wrote:
> Adam Back writes:
> 
> 
>>- Palladium is a proposed OS feature-set based on the TCPA hardware
>>(Microsoft)
> 
> 
> Actually there seem to be some hardware differences between TCPA and
> Palladium.  TCPA relies on a TPM, while Palladium uses some kind of
> new CPU mode.  Palladium also includes some secure memory, a concept
> which does not exist in TCPA.

This is correct. Palladium has "ring -1", and memory that is only 
accessible to ring -1 (or I/O initiated by ring -1).

Cheers,

Ben.

-- 
http://www.apache-ssl.org/ben.html       http://www.thebunker.net/

Available for contract work.

"There is no limit to what a man can do or how far he can go if he
doesn't mind who gets the credit." - Robert Woodruff


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