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Re: about smartcards (Re: TPM support status ?)
From: |
Robert Millan |
Subject: |
Re: about smartcards (Re: TPM support status ?) |
Date: |
Thu, 20 Aug 2009 22:02:11 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Thu, Aug 20, 2009 at 08:35:34PM +0200, decoder wrote:
> Robert Millan wrote:
>> SmartCards are a single-purpose device. Users don't install software in
>> them,
>>
> You don't install software in a TPM module either.
>> and they don't have any user interface (other than a button or so) that could
>> be used to implement DRM
> This is wrong. Smartcards of course have a an interface to interact with
> them.
Yes, but it's usually just a button or similar. It doesn't behave like a
computer.
The same happens with your oven or your fridge. They run software and have a
user interface, but they don't work like a computer.
> And yes, you could use a Smartcard to do DRM.
No, you can't. What you can do is use the smartcard for authentication
in a computer that has been previously rigged against its user. In this
case it is the computer which implements DRM, not the card.
>> , so it's not an issue if their owners can't modify
>> their firmware (which could even be in a ROM).
>>
> The TPM can't modify anything either. A TPM is a _passive_ crypto module.
What does this have to do with anything? Being passive doesn't prevent it
from being used in coercion schemes like:
"Either you use this TPM to certify you're running Crippleware Reader
2.0 or you can't read this book"
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
- Re: TPM support status ?, (continued)
- Re: TPM support status ?, Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: TPM support status ?, Michal Suchanek, 2009/08/20
- Re: TPM support status ?, Michael Gorven, 2009/08/20
- Re: TPM support status ?, Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: TPM support status ?, Michal Suchanek, 2009/08/20
- Re: TPM support status ?, Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: TPM support status ?, Duboucher Thomas, 2009/08/20
- about smartcards (Re: TPM support status ?), Robert Millan, 2009/08/20
- Re: about smartcards (Re: TPM support status ?), decoder, 2009/08/20
- Re: about smartcards (Re: TPM support status ?), Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: about smartcards (Re: TPM support status ?),
Robert Millan <=
- Re: about smartcards (Re: TPM support status ?), decoder, 2009/08/20
- Re: about smartcards (Re: TPM support status ?), Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: about smartcards (Re: TPM support status ?), Robert Millan, 2009/08/20
- Re: TPM support status ?, Vladimir 'phcoder' Serbinenko, 2009/08/20
- Re: TPM support status ?, Duboucher Thomas, 2009/08/20
- Re: TPM support status ?, Michal Suchanek, 2009/08/21
- Re: TPM support status ?, Robert Millan, 2009/08/20
Re: TPM support status ?, Robert Millan, 2009/08/20