Control: forwarded 840398 https://bugs.gnupg.org/gnupg/issue2748
Hi Dominik-- On Tue 2016-10-11 04:36:19 -0400, Dominik George wrote: > When using GPG keys for SSH through gpg-agent, it would be great if, > instead of "(none)", the primary UID of the main key of the > authentication key used could be used as comment. I've forwarded this feature request upstream to https://bugs.gnupg.org/gnupg/issue2748 As i wrote over on the upstream ticket: I'm aware that this request isn't implementable exactly as requested. For one thing, some authentication-capable subkeys could be attached to multiple primary keys, each of which has a different primary User ID. So that corner case makes the generic solution imperfect. It looks like these values are stored in the ~/.gnupg/private-keys-v1.d/ in the "comment" element of the S-key, which is populated when keys arrive in the agent via ssh-add directly. While users could explicitly add such a comment to pre-existing private keys, it would be nice to automate this process for authentication-capable subkeys that the agent already stores and aren't otherwise bound to multiple primary keys. hth, --dkg
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