Re: Git uses wrong subkey for signing commits with GPG key

From: Andrzej Ośmiałowski <me@osmialowski.net>
Date: Jan 13, 2018, 12:40 UTC
Message-ID: <CAHLNBdUTWTbvkLdqbvB-1vs=oPJOHP5S3CWMZbtCgBnJNh4hRQ@mail.gmail.com>
In-Reply-To: <20180113002221.GQ29313@zaya.teonanacatl.net>

Hi Todd,

On Sat, Jan 13, 2018 at 1:22 AM, Todd Zullinger <tmz@pobox.com> wrote:

Show 28 quoted lines

> Hi Andrzej,
>
> Andrzej Ośmiałowski wrote:
>> I have an issue with git and signing commits with GPG subkey.
>>
>> My setup:
>> - master key used for certification only
>> - subkey for my main workstation
>> - subkey for my mobile workstation (a notebook).
>>
>> Both subkeys are used for signing only.
>>
>> I've configured git to use my specific subkey however it does not
>> work: git config --global user.signingkey = KEYID. Every commit is
>> being signed using the newest subkey. I've verified the same behavior
>> on three systems (although with the same setup). I've tried to use
>> --gpg-sign=KEYID flag, but it does not work either.
>
> I could be wrong, but I think you need to append '!' to
> KEYID to force gpg to use that specific signing subkey.
>
> --
> Todd
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> A vacuum is a hell of a lot better than some of the stuff that nature
> replaces it with.
>     -- Tennessee Williams
>

thanks for reply. You just solved my issue. I will prepare a PR to the docs to add relevant information.