Re: [Secdispatch] draft-madden-jose-ecdh-1pu
Richard Barnes <rlb@ipv.sx> Mon, 17 May 2021 14:06 UTC
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From: Richard Barnes <rlb@ipv.sx>
Date: Mon, 17 May 2021 10:05:44 -0400
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To: Neil Madden <neil.madden@forgerock.com>
Cc: Michael Richardson <mcr+ietf@sandelman.ca>, secdispatch@ietf.org
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Subject: Re: [Secdispatch] draft-madden-jose-ecdh-1pu
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Hi Neil, Thanks for bringing up this idea. I wasn't in the WG for the discussion, but if I were there, I would have been worried about the new crypto construction that is laid out in this draft. An interesting alternative approach here might be to use HPKE [1] as the public-key encryption primitive here. HPKE has been through CFRG review already, and has security proofs. It is already being used in protocols like TLS ECH [2] and MLS [3], so there's starting to be some support for it in libraries like boringssl [4]. And in addition to getting a sender-authenticated mode as you do with 1PE, you would also get to upgrade the base JWE ECDH mode to something with better proofs, and you would get a PSK option, all basically for free. Cheers, --Richard [1] https://tools.ietf.org/html/draft-irtf-cfrg-hpke [2] https://datatracker.ietf.org/doc/html/draft-ietf-tls-esni-07#section-4 [3] https://datatracker.ietf.org/doc/html/draft-ietf-mls-protocol#section-7.7 [4] https://boringssl.googlesource.com/boringssl/+/chromium-stable/crypto/hpke/ On Mon, May 17, 2021 at 6:04 AM Neil Madden <neil.madden@forgerock.com> wrote: > > > On 17 May 2021, at 10:53, Michael Richardson <mcr+ietf@sandelman.ca> > wrote: > > > > > > Neil Madden <neil.madden@forgerock.com> wrote: > >> The draft was originally created to support work within the OAuth WG > >> around JWT-format access tokens. However, the WG declined to adopt the > >> draft, so it’s looking for a new home. I believe the draft is ideally > > > > Did the WG give a reason? > > > > The meeting was some time ago now, but as I remember it essentially they > felt that it was outside of their charter and area of expertise. Although > the OAuth WG have done work around JWTs specifically in the past, they have > not ever approved new cryptographic algorithms. > > — Neil > -- > ForgeRock values your Privacy <https://www.forgerock.com/your-privacy> > > _______________________________________________ > Secdispatch mailing list > Secdispatch@ietf.org > https://www.ietf.org/mailman/listinfo/secdispatch >
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Neil Madden
- [Secdispatch] draft-madden-jose-ecdh-1pu Neil Madden
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Michael Richardson
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Richard Barnes
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Neil Madden
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Michael Richardson
- Re: [Secdispatch] draft-madden-jose-ecdh-1pu Neil Madden