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Re: [Rats] Orthogonal: UUID? (was RE: Some new comments for CHARRA YANG module)

"Eric Voit (evoit)" <evoit@cisco.com> Mon, 17 August 2020 16:40 UTC

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From: "Eric Voit (evoit)" <evoit@cisco.com>
To: "Salz, Rich" <rsalz=40akamai.com@dmarc.ietf.org>, Laurence Lundblade <lgl@island-resort.com>, "Eric Voit (evoit)" <evoit=40cisco.com@dmarc.ietf.org>, "Panwei (William)" <william.panwei@huawei.com>
CC: "rats@ietf.org" <rats@ietf.org>, "Shwetha Bhandari (shwethab)" <shwethab@cisco.com>, "draft-ietf-rats-yang-tpm-charra@ietf.org" <draft-ietf-rats-yang-tpm-charra@ietf.org>
Thread-Topic: [Rats] Orthogonal: UUID? (was RE: Some new comments for CHARRA YANG module)
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Date: Mon, 17 Aug 2020 16:40:05 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/rats/MttM8aqHaOhzAG31vV0Oj-iFq6I>
Subject: Re: [Rats] Orthogonal: UUID? (was RE: Some new comments for CHARRA YANG module)
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I am happy to get rid of it.    I am just making sure that there are no 
objections from the requesting source(s).


Eric



From: RATS <rats-bounces@ietf.org> On Behalf Of Salz, Rich
Sent: Friday, August 14, 2020 5:01 PM
To: Laurence Lundblade <lgl@island-resort.com>; Eric Voit (evoit) 
<evoit=40cisco.com@dmarc.ietf.org>
Cc: rats@ietf.org; Panwei (William) <william.panwei@huawei.com>; Shwetha 
Bhandari (shwethab) <shwethab@cisco.com>; 
draft-ietf-rats-yang-tpm-charra@ietf.org
Subject: Re: [Rats] Orthogonal: UUID? (was RE: Some new comments for CHARRA 
YANG module)



*	I would suggest avoiding UUIDs if possible. Nowadays good RNGs are available 
and you can just use them to generate a nonce or such. Good RNGs were not 
available commonly in CPUs when UUIDs were invented, but they are now.  If you 
just want a nonce, then the internal structure of a UUID is of no value and 
just adds complexity and confusion.



As the lead author of the UUID RFC: I agree.

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