Talk:TCPA/TCG - Trusted or Treacherous

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Revision as of 03:57, 5 July 2005 by (Talk) (a bit paranoid?)
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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 ;-)

--Pitsche 11:38, 4 Jul 2005 (CEST)


Large parts of this article apparently consist of unattributed, near-verbatim excerpts from a SANE2004 paper by Weis, Lucks, and Bogk, 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, another version of this text on a website of the presentation of the annual chaos computer club is one of my sources, but I think, that one 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!

--Pitsche 21:12, 4 Jul 2005 (CEST)

If the original authors have explicitly published the text under a suitably permissive CC license, there should be no legal problem in using it in a ThinkWiki article. Even in that case, however, the source needs to be clearly identified, and there should be a link to the complete original article.

-- Andrzej

Okay Andrzej, I will work on that and tell all of you about it in the coming days, if I have enough time for it.

Unless that, feel free to take out the critical passages of the article or modify it, if you have the time and if you want to do it.

But there is a problem: I slightly changed the text, put two sentence together to one etc. How can I now cite the source?

--Pitsche 21:38, 4 Jul 2005 (CEST)

No problem; just say that your ThinkWiki article is based on the Weis et al. paper, and give a reference. The parts of their text that you include don't have to be verbatim copies; indeed, the whole point is that you are creating a derived work (e.g., by bringing in material from other sources), which they supposedly explicitly allow in the CC license. To be on the safe side, you should probably also include a link to a web page documenting that the original text is indeed freely licensed, or say that you have personally obtained permission from the authors.

-- Andrzej

Agreed. There should be a general statement in the article about the source the article is derived from, or rather sources - i seem to have used different sources of information for some of my edits. ;-) I'll add mine on next edit.


Thanks for your work, i like it

Hello Wyrfel,

thank you very much for editing and restructering of that article.

I think, I know know what you and Andrzej want and I will try in he next days, to change the article in that way, okay?

P.S.: I don't know, why I loose my logged-in status from time to time, perhaps my connection. I am sorry, that there are IP-Adresses instead of my unsername "pitsche", I hope, no one gets confused, which edit is by me and which one by someone else :-o


--Pitsche 21:15, 4 Jul 2005 (CEST)

About your login status: ThinkWiki doesn't cache logins. This means everytime your connection breaks or your browser closes you will have to login again. But don't worry, we can figure out what's from you and if not - it's a Wiki. ;-) I'm doing a lot of edits without being logged in as well.


No exact TCG specifications needed

Hello again!

I am against writing about the specific specifications, because it will make the article longer and everybody, who is really interested in the specifications has several possibilities to get it for free in the WWW or from or from the CCC.

--Pitsche 21:22, 4 Jul 2005 (CEST)

I think the TCG specifications should appear there somewhere. At least at current state of my knowledge about the subject i'd think that having them there is helpful for the user to understand what ESS 1 and 2 are capable of. Of course we shouldn't post the whole specs, but some really compressed summary, similar to the 'feature-list' in "TC - Trusted Computing". Pitsche, if you could point me to them i could do it. Also, a link to the original TCPA specs would be good. The links themselves should be added to the Links section.

That's it so far...i like the way we work on this.


One more thing...

I think the TCPA implementation in current ThinkPads is pretty harmless. At least at it's current software state. You just don't use it (respectively don't install the supporting software layer) and it never gets active. One interesting aspect of finding out what the chip is capable of is if it could be forced to be used by later software upgrades or not.


Hello Wyrfel!

I also like the way we work on this article. I think, their will be a improvement in the end, that makes everybody happy and is interesting for the users of the ThinkWiki.

Now to your comments:

  1. I deleted the 'exact' TCG-Specifications, because there is a paragraph about ESS 1.0 and ESS 2.0, where I think the informations should be placed about how much TCG is in ESS, "what ESS 1 and 2 are capable of" and "if it could be forced to be used by later software upgrades or not" (qutoes from you). Correct me if I am wrong, but otherwiese it would be included two times in the article. Or am I making a mistake here?
  2. I agree with you: At least one hyperlink to the TCG-Specifications should be included in the "Related Links" (right now it is No. 9 in the Table Of Contents). Perhaps on wednesday or thursday I will do this...
  3. I don't know, if the TCPA implementation in current ThinkPads is pretty harmless. I understood Ruediger and Andreas in their presentation at the 21. Chaos Communication Congress very different to that, because the were referring almost only to IBM and Microsoft.
It might be a rhetorical technique to fascinate their audience and to keep them awake and following. But my impression of them both was, that they are very concerned scientist (or at least CCC-Activists), who really see the current TCG-Implementations that problematic. And I also felt that they don't need to panic the people just for getting more attention and that they would'nt be disappointed, if they could turn their attention to something else and did'nt have to fight against TCPA/TCG/Palladium :-)

P.S.: Effeff, well, how do I say this, hmmm, does anybody know, where I can find a list of 'common market prices' in USD or Euro for used ThinkPads?

Perhaps something like this ???? "Jehova, Jehova, Jeh- outch!" ;-)

Background: I was offered a not so much used ThinkPad A30 with a SXGA+ - TFT-Display without any pixelerrors, but some problems at the drive slot at the right side. Specs of it are: CPU 1.0 Ghz, RAM 512 MB, HDD original IBM 60 GB with 5400 rpm and CD-RW/DVD-ROM-Combo drive...

I have much difficulty for naming a price, because I am not familiar with the cost of repairing that drive slot. At eBay I found some A30p around 600,- Euro and a A22p for 529,- Euro -- is the A30 between? :-o


--Pitsche 01:37, 5 Jul 2005 (CEST)

a bit paranoid?

1) The Embedded Security Subsystem page already contains a list of ThinkPad's that might have the security chip, no need to start listing older machines that predate it.

2) And noticed how I said might, because some of the ThinkPads listed had the security chip as a feature that was not available on every model in the range. You can see this on the individual ThinkPad product pages, as it will say that it was available on select models. So for example it is perfectly possible to get a second-hand R40, T40 or X31 without the chip. If you want to know the exact type-model of machines with or without the securitychip, look at tawbook.pdf or trwbook.pdf

3) To my knowledge, the chip is disabled by default on every machine that has it, you need to manually enable it in the BIOS first. I have three ThinkPads currently, two have the security chip, and neither Windows or Linux is able to detect it in the disabled state.

4) Ironically Linux actually has better support for it then windows out-of-the-box. The latest Linux kernels have a driver for it, while MS is not shipping anything that supports it, and will not for some time.