On Sep 2, 2010, at 6:37 PM, Andre Zepezauer wrote:
> And when this portable brakes, can I use the TPM (with keys on it) in a
> replacement part?

The situation is no different if your SD card breaks.
Or the TPM chip on the motherboard breaks - you do not get your keys, nor is it 
easily replaceable.

>From good key management perspective, the MTBF of your portable might be 
>longer than a paranoid re-keying period.

(People use crypto are usually a bit paranoid so you should care about 
re-keying. Companies use crypto if they have assets to protect and money to 
lose. Unlike people at home, companies usually have procedures and plans for 
key management, something that home users usually ignore)

Business continuity, including proper key management and PKI, is hard :)
-- 
Martin Paljak
@martinpaljak.net
+3725156495

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