Re: [hiprg] New thoughts on HIT construction

Tobias Heer <> Mon, 19 July 2010 13:40 UTC

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From: Tobias Heer <>
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Date: Mon, 19 Jul 2010 15:41:08 +0200
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To: Pascal Urien <>
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Subject: Re: [hiprg] New thoughts on HIT construction
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Hello Pascal, 

I briefly read draft-irtf-hiprg-rfid-00.txtand have some comments/questions in addition to Bob's comments:

A very minor issue: HIP-Tag may be easy to confuse with Host Identity Tag / HIT. I don't have a proposal for a better name but I believe a more different name could avoid some confusion.
Am 27.06.2010 um 18:50 schrieb Pascal Urien:

In section 1.4 you mention three entities but provide a list of five things, four of them being entities, one being a data structure implemented on one of the four. I think this list is a bit misleading and could be structured in a better way.

About the HAT: Is HIP Address translator really the right name for it? As far as I understood it, it is rather a protocol translator than an address translator.

Section 1.5 states that the HIT can be traced. Ephemeral HIs allow for some anonymity (equivalent to the one used in the RFID document) even in baseline HIP.

It would be good to state the security goals/services that the T-BEX offers in the beginning. Who authenticates to whom? What is the result of the T-BEX? One can derive these things from the technical description but explicitly stating these things might help comprehension.

What are the security assumptions? What is the attacker model? Is the reader trustworthy? Is an MITM attack by the reader an issue?

Do the new parameters use the same type space as baseline HIP? If yes, are they all non-critical? The critical bit seems not to be set in any of the parameters.



> Hi All,
> The document draft-irtf-hiprg-rfid has been posted to ietf
> See
> Following Thomas review
> ( ,
> the document draft-urien-hip-tag-03 has been modified and reviewed by
> Pascal Urien,  Gyu Myoung Lee, and Guy Pujolle
> Best Regards
> Pascal
> _______________________________________________
> hiprg mailing list

Dipl.-Inform. Tobias Heer, Ph.D. Student
Distributed Systems Group 
RWTH Aachen University, Germany
tel: +49 241 80 207 76