[openpgp] Re: Primary Key Binding sigs on authentication subkeys

Daniel Huigens <d.huigens@protonmail.com> Mon, 27 January 2025 15:47 UTC

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Date: Mon, 27 Jan 2025 15:46:48 +0000
To: Justus Winter <justus@sequoia-pgp.org>
From: Daniel Huigens <d.huigens@protonmail.com>
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CC: Andrew Gallagher <andrewg@andrewg.com>, IETF OpenPGP WG <openpgp@ietf.org>
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Subject: [openpgp] Re: Primary Key Binding sigs on authentication subkeys
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Hi Justus,

Thanks for the background, makes sense to me.

---

In https://github.com/ProtonMail/go-crypto/pull/265, I've updated the
code to check cross-signatures for v6 authentication subkeys only,
given the interop concerns Andrew raised. Let me know if anyone
has objections to this (and/or, I suppose, to implicitly agreeing
that we'll add cross-signatures to v6 authentication subkeys).

Best,
Daniel