TCPA/TCG - Trusted or Treacherous

2005-07-04T19:03:50Z

84.59.64.201: new version

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<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">The Members of the Trusted Computing Group (TCG), formerly the Trusted Computing Platform Allience (TCPA), are working on a paradigm shift in information technology, which could become the biggest change of the information landscape since decades.

This article tries to gather information about the implications of the TCPA and TCG effords. To many users these implications seem rather treacherous than trustworthy. This article tries to give a short summarized overview over the facts from a rather netral point of view.

We will start with a quote:

''"It is clear that trusted computing hardware provides security benefits, if software is prepared to take advantage of it. But trusted computing has been received skeptically and remains controversial. Some of the controversy is based on misconceptions, but much of it is appropriate, since trusted computing systems fundamentally alter trust relationships. Legitimate concerns about trusted computing are not limited to one area, such as consumer privacy or copyright issues.'' <br />
''We have at least two serious concerns about trusted computing. First, existing designs are fundamentally flawed because they expose the public to new risks of anti-competitive and anti-consumer behavior. Second, manufacturers of particular "trusted" computers and components may secretly implement them incorrectly."'' <br />
''Source: [http://www.eff.org/Infrastructure/trusted_computing/20031001_tc.php Electronic Frontier Foundation]''</div>
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==TC - Trusted Computing==
Recently, the number of known security incidents has been dramatically increasing. Thus, security issues in computer industry have been pushed forward. So far, digital content on computers couldn't be efficiently protected since every security mechanism accessible by software could always be circumvent by software.

The idea of Trusted Computing is to provide a hardware layer that cares for
* storage of security related data like keys, certificates and checksums
* encryption and decryption
* validation of certificates
* (Remote) Platform Attestation (''meaning that somebody can check the state of your personal computer over the internet'')
* Sealing (''meaning binding data to a specific platform and application'')

Since this way the hardware can handle security management without any software being able to access the security data (like a Black Box). Moreover, the whole software layer can be 'monitored' by the hardware through the use of checksums. Hence the TCPA layer can recognise changes to the software layer and block the whole system from starting, this way keeping malicious software from running at all.

==A short history of TCPA, TCG, Palladium and NSCB:==
* 1999: The Trusted Computing Platform Alliance (TCPA) is founded by Intel, Microsoft, HP, Compaq and IBM.
* February 2002: The TCPA Main Specification Version 1.1b is being published.
* early 2003: In the beginning of 2003 the name is changed to "next-generation secure computing base" (NGSCB).
* April 2003: The Trusted Computing Group (TCG) is founded by AMD, HP, IBM, Intel and Microsoft.
* Summer 2004: The NGSCB effort seems to have stopped.

==The TCPA==
Founded 1999 by Compaq, HP, IBM, Intel and Microsoft, the TCPA counts around 200 members by now, among them Adobe, AMD, Fujitsu-Siemens, Gateway, Motorola, Samsung, Toshiba and many others.

ToDo...

==The TCG==
As successor of the TCPA, the TCG was founded by AMD, HP, IBM, Intel and Microsoft in April 2004.

ToDo...

===TCG 1.1===
ToDo...

===TCG 1.2===
ToDo...

==TCG Hardware Architecture==
The Trusted Platform Module (TPM) (a.k.a. "Fritz"-Chip) is the central element of the TCG architecture. Imagine a hardwired smart card for a abstract picture of this architecture.

The integration of the whole functionality into the CPU is also discussed, which would increase resistance against tampering attacks (see also Intel "LaGrande").

Regarding the hardware security of the "Trusted Platform Modules (TPM)", there were two important critiques:
*The first one has been the insuficient security certification against hardware attacks. In TCG 1.2 this critique has been addressed by an improvement of the hardware requirements. It has to be seen how strong the resistance against sophisticated attacks at intensively daily usage will be.
*The second one addreses the 'black box'-characterisitcs and risk 'hidden channels' in the TCG-Hardware, which can be easily implemented and used to send secret information to third parties.

==TC - Treacherous Computing==
Generally, there are good arguments that these features can be used to improve the security of computer systems. Trusted Computing offers a lot of features which can be used to protect the personal computer against malicious software and users.

But according to a lot of technical analysis most researchers have fundamental critics on the main design considerations. The new infrastructure will offer '''only minor protection against worms and viruses'''. And some of these features can already be established by todays smart card supported systems.

''We recognize that hardware enhancements might be one way to improve computer security. But treating computer owners as adversaries is not progress in computer security. '''The interoperability, competition, owner control, and similar problems inherent in the TCG and NCSCB approach are serious enough that we recommend against adoption of these trusted computing technologies until these problems have been addressed. Fortunately, we believe these problems are not insurmountable''', and we look forward to working with the industry to resolve them."'' <br />
Source: [http://www.eff.org/Infrastructure/trusted_computing/20031001_tc.php Electronic Frontier Foundation], bold emphasis by [[User:Pitsche|Pitsche]]

There are a lot of drawbacks to this kind of security implementation...
*The concept prevents even the device owner from certain operations.
*Remote Attestation is a good feature to remotely detect tampering of the computer, as long as this 'somebody' is the owner of the platform. But if this Remote Attestation is used by third parties, serious privacy and market domination issues arise.
*There are certainly legitimate reasons for Sealing. But the main use case seems to be consumer-unfriendly new 'business cases' for content dealers which involve locking down content to a single platform, based on connecting content to a specific device without any migration options.

Additionally, the market domination of Microsoft, obscurities regarding the needed trust infrastructure and a heap of patents have lead to critical evaluations from cryptographers, privacy organizations and European institutions. <br />
Because of this pressure the Trusted Computing Group has modifed its proposal. The recent specification is "TCG 1.2".

=== DRM - Digital Rights Management ===
The philosophy behind Remote Platform Attestation and Sealing seems to be a protection of the computer system or electronic device ''against'' its user and owner.

What will do this to the use of digital media content on electronic devices? The answer of the IT- and the Entertainment-Industry is "Digital Rights Management" or just shortly "DRM".

''The DRM component takes control over the rest of the user's device which they rightfully own (e.g. MP3-Player'' '''or a ThinkPad)''' ''and restricts how it may act, regardless of the user's wishes (e.g. preventing the user from copying a song). All forms of DRM depend on the device imposing restrictions that cannot be legally disabled or modified by the user. In other words, the user has no choice.'' Bold emphasised by [[User:Pitsche]].

So a new 'name' for DRM came up: '''Digital Restrictions Management''' instead of Digital Rights Management.

Read more at [[Wikipedia:Digital rights management]].

=== Censorship and Avoiding Whistle Blowers ===
The Siamese twin of Digital Restriction Management is censorship. '''The same techniques which avoid copying music songs can be used to limit the access to all kinds of documents'''. The combination of DRM and observation hardware like TCG leads to very dangerous implications.

Giving a real world example, the Chinese government could easily block the use of all documents containing the words "Dalai Lama" on 'trusted' computer systems.

Another application is the fight against whistle blowers. E.g. government documents about the deportation of own citizens to countries with a doubtful law system or about supporting illegal wars could be made readable for government computers only and combined with a expiration date. This might make it very dificult for the society or following generations to disclose these breaches of humanity.

=== Summary ===
There are still a lot of critical questions, even though TCG 1.2 contains many steps into the right direction.

==TCPA/TCG in ThinkPads==
=== Embedded Security System (1.0) ===

Embedded Security System (in IBM documents there is no use of the additive version-nummer 1.0) is using the heayvily disputed "TCG 1.1"-specification.

''(Features etc. will soon be added here - your help, support or cooperation is very much appreciated)''

=== Embedded Security System 2.0 ===

The recent TCG-specification is "TCG 1.2" and Embedded Security System 2.0 is supposed to use this newer specification.

''(Features etc. will soon be added here - your help, support or cooperation is very much appreciated)''

===ThinkPads with TCPA Technology===
====IBM Embedded Security Subsystem====
*ThinkPad {{R31}}
*ThinkPad {{T23}}, {{T30}}
*ThinkPad {{X23}}, {{X24}}
====IBM Embedded Security Subsystem 2.0====
*ThinkPad {{R32}}, {{R40}}, {{R50}}, {{R50p}}, {{R51}}, {{R52}}
*ThinkPad {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}, {{T43}}, {{T43p}}
*ThinkPad {{X30}}, {{X31}}, {{X32}}, {{X40}}, {{X41}}, {{X41T}}

===TCPA/TCG clean models===
*all models produced before 2000
*all i Series models
*ThinkPad [[:Category:240X|240X]]
*ThinkPad [[:Category:A20m|A20m]], [[:Category:A20p|A20p]], [[:Category:A21e|A21e]], [[:Category:A21m|A21m]], [[:Category:A21p|A21p]], [[:Category:A22e|A22e]], [[:Category:A22m|A22m]], [[:Category:A22p|A22p]], [[:Category:A30|A30]]
*ThinkPad [[:Category:T20|T20]], [[:Category:T21|T21]]
*ThinkPad [[:Category:X20|X20]], [[:Category:X21|X21]], [[:Category:X22|X22]]
*ThinkPad [[:Category:TransNote|TransNote]]

== OpenSource Software and TCG ==
TCG has huge implication for the development of free software. Following a possibly expensive evaluation there will be a signature for one program version. Even if the program is licensed under the GPL every change to the code will make the signature invalid. This seems to be a strong violation of the main philosophy of OpenSource software.

Since Microsoft controls an overwhelming part of the OS market, it seems to be rather difficult to evaluate the TCG proposal separated from the Palladium project.

TCG versus GPL: At least two companies are researching on "TCG-enhanced" versions of GNU/Linux. According most security researchers it seems to be necessary to evaluate programs which have access to the 'trusted part'.

== Related Links ==
*[http://www.cl.cam.ac.uk/~rja14/tcpa-faq.html 'Trusted Computing' Frequently Asked Questions] - Anti-TC FAQ by Cambridge University security director and professor [[Ross Anderson]].
*[http://www.againsttcpa.com/ Against-TCPA]
*[http://invisiblog.com/1c801df4aee49232/article/0df117d5d9b32aea8bc23194ecc270ec Interesting Uses of Trusted Computing]
*[http://www.gnu.org/philosophy/can-you-trust.html Can you trust your computer?] essay by the FSF
*[http://www.protectprivacy.org/topic--lang-en.html The civil rights organisation Protect Privacy]

== Read more at Wikipedia, the free encyclopedia: ==
*[http://en.wikipedia.org/wiki/Trusted_computing Trusted Computing]
*[http://en.wikipedia.org/wiki/Trusted_Computing_Platform_Alliance Trusted Computing Group (formerly known as TCPA)]
*[http://en.wikipedia.org/wiki/Fritz-chip Fritz-Chip]
*[http://en.wikipedia.org/wiki/Palladium_operating_system Palladium]
*[http://en.wikipedia.org/wiki/Category:Cryptography Wikipedia-Category: Cryptography]
*[http://en.wikipedia.org/wiki/Category:Copyright_law Wikipedia-Category: Copyright Law]
*[http://en.wikipedia.org/wiki/Category:Digital_rights_management Wikipedia-Category: Digital Rights Management]

Talk:TCPA/TCG - Trusted or Treacherous

2005-07-04T19:00:10Z

84.59.64.201: minor typo / chaos communication congress presentation

== Discussion about the article "Trusted or Treacherous" ==

Please add you comments here.

You can use the "Plus"(+)-Button next to the "edit"-button at the top of this page to add you comments at the right spot ;-)

--[[User:Pitsche|Pitsche]] 11:38, 4 Jul 2005 (CEST)

== Plagiarism? ==

Large parts of this article apparently consist of unattributed, near-verbatim excerpts from a SANE2004 paper by Weis, Lucks, and Bogk, [http://www.cryptolabs.org/CCC2004TCunendlich/WeisLucksBogkSane2004tcg12.pdf TCG 1.2 - fair play with the 'Fritz' chip?]. Regardless of whether one believes that general political/ethical concerns about Trusted Computing belong on a Thinkpad-specific site, wholesale copying of unidentified, and presumably copyrighted, material is not cool, and could get the whole project in trouble.

I would suggest that the non-original parts of this article be removed and replaced by an external link to the above-mentioned paper; any particularly crucial short excerpts (as permitted by "fair use") should be clearly identified as such. The specific information about how the TCG specifications are implemented on various Thinkpad models can stay, of course.

== The Source is under Creative Commons, isn't it? ==

Hello Andrzej,

yes, you are right, this text on a website of the presentation of the annual chaos computer club is one of my sources, but I think, it is under creative commons license by-nc-sa 2.0 de. And are the presentations of the chaos computer congress not also free unless the speakers don't want it??????

This license allows to copy, distribute, display, perform or modify the text as long as it is published under exactly the same creative commons license and licensees may not use the work for commercial purposes - unless they get the licensor's permission.

My problem was, I had a lot more sources in a different language than english and my first drafts were way to long!

It didn't worked to keep it that short but detailed, as Ruediger and Adreas wrote it.

But if you think, after my explanation the actual version is still problematic, I will delete it of course!

--[[User:84.59.64.201|84.59.64.201]] 20:57, 4 Jul 2005 (CEST)

Talk:TCPA/TCG - Trusted or Treacherous

2005-07-04T18:57:54Z

84.59.64.201: The Source is under Creative Commons, isn't it?

== Discussion about the article "Trusted or Treacherous" ==

Please add you comments here.

You can use the "Plus"(+)-Button next to the "edit"-button at the top of this page to add you comments at the right spot ;-)

--[[User:Pitsche|Pitsche]] 11:38, 4 Jul 2005 (CEST)

== Plagiarism? ==

Large parts of this article apparently consist of unattributed, near-verbatim excerpts from a SANE2004 paper by Weis, Lucks, and Bogk, [http://www.cryptolabs.org/CCC2004TCunendlich/WeisLucksBogkSane2004tcg12.pdf TCG 1.2 - fair play with the 'Fritz' chip?]. Regardless of whether one believes that general political/ethical concerns about Trusted Computing belong on a Thinkpad-specific site, wholesale copying of unidentified, and presumably copyrighted, material is not cool, and could get the whole project in trouble.

I would suggest that the non-original parts of this article be removed and replaced by an external link to the above-mentioned paper; any particularly crucial short excerpts (as permitted by "fair use") should be clearly identified as such. The specific information about how the TCG specifications are implemented on various Thinkpad models can stay, of course.

== The Source is under Creative Commons, isn't it? ==

Hello Andrzej,

yes, you are right, this is one of my sources, but I think, it is under creative commons license by-nc-sa 2.0 de.

This license allows to copy, distribute, display, perform or modify the text as long as it is published under exactly the same creative commons license and licensees may not use the work for commercial purposes - unless they get the licensor's permission.

My problem was, I had a lot more sources in a different language than english and my first drafts were way to long!

It didn't worked to keep it that short but detailed, as Ruediger and Adreas wrote it.

But if you think, after my explantion the actual version is still problematic, I will delte it of course!

--[[User:84.59.64.201|84.59.64.201]] 20:57, 4 Jul 2005 (CEST)

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TCPA/TCG - Trusted or Treacherous

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