Re: [Ace] [Jwt-reg-review] Requested review for IANA registration in draft-ietf-ace-oauth-authz

Ludwig Seitz <ludwig_seitz@gmx.de> Sat, 18 January 2020 16:22 UTC

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To: Brian Campbell <bcampbell=40pingidentity.com@dmarc.ietf.org>, Seitz Ludwig <ludwig.seitz@combitech.se>
Cc: Roman Danyliw <rdd@cert.org>, "jwt-reg-review@ietf.org" <jwt-reg-review@ietf.org>, Jim Schaad <ietf@augustcellars.com>, The IESG <iesg@ietf.org>, "ace@ietf.org" <ace@ietf.org>, "drafts-lastcall@iana.org" <drafts-lastcall@iana.org>, Benjamin Kaduk <kaduk@mit.edu>
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From: Ludwig Seitz <ludwig_seitz@gmx.de>
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Date: Sat, 18 Jan 2020 17:21:18 +0100
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Subject: Re: [Ace] [Jwt-reg-review] Requested review for IANA registration in draft-ietf-ace-oauth-authz
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On 2020-01-13 22:01, Brian Campbell wrote:
> Thanks for the updates Lugwig,
>
> Section 6.6. does propose one mitigation for the unbounded memory growth
> problem. However, it relies on the AS to do pretty specific things with
> the content of other claims for it to even be possible for an RS to
> perform the mitigation approach. Do you think, for interoperability, it
> needs to be more prescriptive? Like maybe requiring the cti/jti claim
> with specific content and characteristics when exi is present or
> embedding/encoding that sequence number in the value of the exi itself
> alongside the lifetime of the token.
>
>

This sounds like a reasonable requirement. I'm even inclined to make
that a MUST and not just a SHALL. Next update coming soon.

/Ludwig