Re: [Trans] Precertificate format
Rob Stradling <rob.stradling@comodo.com> Tue, 16 September 2014 10:25 UTC
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Date: Tue, 16 Sep 2014 11:25:53 +0100
From: Rob Stradling <rob.stradling@comodo.com>
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To: Erwann Abalea <eabalea@gmail.com>
References: <540DFA75.2040000@gmail.com><540E0E90.1070208@bbn.com><540E28FD.7050809@gmail.com><540ECD3A.4040704@primekey.se><540F4598.5010505@bbn.com><CABrd9SSg5=wuierLoqAU00pMHxgGx+=ai5mHv4u5t6zm43yDWg@mail.gmail.com><5410779A.20209@bbn.com><CABrd9STnjqDBF4-5ABJ86M_d0bwRyjRNjRW6Hnj9UpeYC7Xz9A@mail.gmail.com><5411BDE4.1060508@bbn.com><CABrd9STAHzg_KJi=nA7hsvz+k0SMS+bg6c3hcBtUwfOUm=hqTQ@mail.gmail.com><5411E6B4.5040401@bbn.com><02c365fdc2b8478fb78f310382ae0bb7@EX2.corp.digicert.com><CA+i=0E4bKzn6DB73H7p8k+kDyrku54WhU5ZFcA2g5zY69Kn-Hg@mail.gmail.com><5416B216.6050904@comodo.com><CA+i=0E6svuD8RGNWqHaywtGm17JWz7Mw005OhRbnb+hPDrdrSw@mail.gmail.com> <5416EFD8.1040801@comodo.com>
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Cc: "trans@ietf.org" <trans@ietf.org>, Jeremy Rowley <jeremy.rowley@digicert.com>
Subject: Re: [Trans] Precertificate format
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On 15/09/14 14:55, Rob Stradling wrote: > On 15/09/14 14:27, Erwann Abalea wrote: <snip> >> AKI being a variable extension, how could the log know which one of >> {issuerName+serialNumber}, {keyIdentifier}, >> {issuerName+serialNumber+keyIdentifier} content will be found in the >> final certificate? > > Funny you should mention this. Right now I'm working on SCT > verification code for OpenSSL with Steve Henson and Emilia. Just a few > minutes ago Steve asked the very same question you've just asked here. > > So I just looked at the language in RFC6962 Section 3.2. I think "the > TBSCertificate also has its Authority Key Identifier changed to match > the final issuer" is sufficiently vague that we need to file an erratum > to RFC6962 to specify exactly how to deal with the optionality of the > various AKI components. > > I also just looked at the certificate-transparency.org code for > inspiration, but it seems to be doing completely the wrong thing! It's > copying the final cert issuer's AKI rather than SKI. :-( Sorry, ignore that. Looks like the certificate-transparency.org code is actually copying the Issuer Name and AKI from the Precertificate Signing Certificate. That's correct. Nonetheless, I still think RFC6962 needs an erratum to deal with the optionality of the various AKI components. >> If it's the log signer's job, then in the PreCert signing certificate >> situation, there's no non-conformance to RFC5280 (regarding to >> issuerName+serialNumber uniqueness). > > Correct. The serialNumber is identical, but the issuerName is different. -- Rob Stradling Senior Research & Development Scientist COMODO - Creating Trust Online
- [Trans] Precertificate format Melinda Shore
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Melinda Shore
- Re: [Trans] Precertificate format Brian Smith
- Re: [Trans] Precertificate format Rick Andrews
- Re: [Trans] Precertificate format Hill, Brad
- Re: [Trans] Precertificate format Matt Palmer
- Re: [Trans] Precertificate format Matt Palmer
- Re: [Trans] Precertificate format Eran Messeri
- Re: [Trans] Precertificate format Tomas Gustavsson
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Carl Wallace
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Hill, Brad
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Brian Smith
- Re: [Trans] Precertificate format Hill, Brad
- Re: [Trans] Precertificate format Brian Smith
- Re: [Trans] Precertificate format Brian Smith
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Brian Smith
- Re: [Trans] Precertificate format Kyle Hamilton
- Re: [Trans] Precertificate format Watson Ladd
- Re: [Trans] Precertificate format Tomas Gustavsson
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Melinda Shore
- Re: [Trans] Precertificate format Melinda Shore
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Jeremy Rowley
- Re: [Trans] Precertificate format Erwann Abalea
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Erwann Abalea
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Rob Stradling
- Re: [Trans] Precertificate format Erwann Abalea
- [Trans] Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Melinda Shore
- Re: [Trans] Precertificate format Stephen Davidson
- Re: [Trans] Precertificate format Ben Laurie
- [Trans] Fwd: Precertificate format Erwann Abalea
- Re: [Trans] Fwd: Precertificate format Ben Laurie
- Re: [Trans] Precertificate format Stephen Kent
- Re: [Trans] Precertificate format Russ Housley
- Re: [Trans] Precertificate format Rob Stradling