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Re: [Sidrops] I-D Action: draft-ietf-sidrops-aspa-profile-15.txt

Russ Housley <housley@vigilsec.com> Fri, 09 June 2023 12:57 UTC

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From: Russ Housley <housley@vigilsec.com>
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Date: Fri, 09 Jun 2023 08:57:12 -0400
Cc: Job Snijders <job=40fastly.com@dmarc.ietf.org>, sidrops@ietf.org
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To: Martin Hoffmann <martin@nlnetlabs.nl>
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Subject: Re: [Sidrops] I-D Action: draft-ietf-sidrops-aspa-profile-15.txt
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> On Jun 8, 2023, at 12:14 PM, Martin Hoffmann <martin@nlnetlabs.nl> wrote:
> 
> Job Snijders wrote:
>> 
>> The internet-draft changes is best viewed by comparing -13 and -15:
>> https://author-tools.ietf.org/iddiff?url1=draft-ietf-sidrops-aspa-profile-13&url2=draft-ietf-sidrops-aspa-profile-15
> 
> | ProviderASSet ::= SEQUENCE (SIZE(1..MAX)) OF ASID
> 
> This should probably be a SET rather than a SEQUENCE? This gives you no
> duplicates and a canonical DER encoding for free.

Martin:

DER encoding of a SET requires a sort.  DER encoding of a SEQUENCE preserves the sender's order.  So, while I agree with your observation about the semantics, I'd rather avoid the sort.

Russ

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