Subject: Re: [COSE] draft-prorock-cose-post-quantum-signatures [Was: Re: Call for COSE Agenda Items for IETF 113 in Vienna]

From: Mike Jones <[email-masked]>
Date: Sun, 20 Mar 2022 06:40:26 +0000

+1

From: COSE <[email-masked]> On Behalf Of Mike Prorock
Sent: Tuesday, March 15, 2022 1:02 PM
To: Russ Housley <[email-masked]>
Cc: Ilari Liusvaara <[email-masked]>; [email-masked]
Subject: Re: [COSE] draft-prorock-cose-post-quantum-signatures [Was: Re: Call for COSE Agenda Items for IETF 113 in Vienna]

I think the intent is to ony register the alg strings that represent a set of parameters that are intended to be used together, not allow arbitrary values.

+1 Russ

---

From: Mike Jones <[email-masked]>
Date: Sun, 20 Mar 2022 06:49:02 +0000

Note that short string algorithm identifiers can be assigned for "the alg strings that represent a set of parameters that are intended to be used together", just as integers can be assigned for these for COSE.

				-- Mike

-----Original Message-----
From: COSE <[email-masked]> On Behalf Of Michael Richardson
Sent: Tuesday, March 15, 2022 1:02 PM
To: [email-masked]
Subject: Re: [COSE] draft-prorock-cose-post-quantum-signatures [Was: Re: Call for COSE Agenda Items for IETF 113 in Vienna]

Mike Prorock <[email-masked]> wrote:
    > alg: SP-SHAKE256-[n]-[w]-[h]-[d]-[k]-[t]  // SPHINCS+, shake256, parameter

Just remember that while such a string might be super annoying in JSON, in CBOR, it's gonna be an IANA assigned small integer.

(Not commenting for/against such a thing, but just to remind people)

--
Michael Richardson <[email-masked]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide