Re: [hiprg] rfid-04

Pascal Urien <pascal.urien@gmail.com> Tue, 15 November 2011 07:31 UTC

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Date: Tue, 15 Nov 2011 08:31:16 +0100
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From: Pascal Urien <pascal.urien@gmail.com>
To: Andrei Gurtov <gurtov@cs.helsinki.fi>
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Cc: hiprg@irtf.org
Subject: Re: [hiprg] rfid-04
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Hi Anderi,

  About the second question, that are many ways (and many patents) to
produce random values in RFID. Roughly speaking there is two families

- seed in a R/W non volatile memory associated to a pseudo random generator
- memories initialized at power on, or PUF (Physical Unclonable Functions)


Best Regards

Pascal

2011/11/15, Andrei Gurtov <gurtov@cs.helsinki.fi>fi>:
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>
> Hi,
>
> Please add required IANA reservations to next draft revision.
>
> How about my other questions?
>
> Andrei
>
> On 15.11.2011 1:02, Pascal Urien wrote:
>> Hi Andrei,
>>
>> The first mesage delivered by the HIP-RFID protocol is I1-T whose
>> packet type is 0x40
>>
>> This value could be normalized by IANA ?
>>
>> Best Regards
>>
>> Pascal
>>
>>
>> 2011/11/14, Andrei Gurtov <gurtov@hiit.fi>fi>:
>>
>> I read the new draft, which will be presented on Thursday HIPRG
>> http://tools.ietf.org/html/draft-irtf-hiprg-rfid-04
>>
>> I was wondering, is proposed T-BEX interoperating with RFC5201 or
>> 5201bis or DEX HIP? If no, don't we need to request separate IANA
>> protocol version (or even number)? Is there some way that HIP
>> hosts can determine which version the other peer is speaking
>> (perhaps that needs to be embedded to metadata stored for mapping
>> in DNSSEC, DHT, etc).
>>
>> Regarding HIT-I, is it newly generated for each exchange with a
>> reader? Draft mentions HIIT-I is generated pseudorandomfly by RFID,
>> but also says RFID doesn't have timers. So how the randomness can
>> be provided, if there is no system clock to seed it? How long the
>> generation process typically takes on a RFID?
>>
>> Maybe section 1.5 could be extended to summarize differences
>> between HIP and RFID-HIP in a bit more detail (e.g. in base
>> exchange messages)
>>
>> Andrei
>>> _______________________________________________ hiprg mailing
>>> list hiprg@irtf.org https://www.irtf.org/mailman/listinfo/hiprg
>>>
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