Re: Unable to use security key to commit signing using SSH keypair

From: Fabian Stelzer <fs@gigacodes.de>
Date: Jun 28, 2022, 16:23 UTC
Message-ID: <20220628162342.ootjobbjtxg7b7ay@fs>
In-Reply-To: <97adcd90-b4d3-1114-205b-3445dd48b497@gmail.com>

On 27.06.2022 21:09, Marcos Alano wrote:

Show 9 quoted lines

>Hello fellows!
>
>I'm able to sign commits using SSH keypair, but the keypair must be 
>located in a file. If I try to use a SSH keypair in a security key 
>(like an YubiKey) I get an error. I used this commands to do the test:
>```
>ssh-keygen -t ed25519-sk -f ~/.ssh/id_ed25519_sk
>git config --global gpg.format ssh
>git config --global user.signingkey "$(cat ~/.ssh/id_ed25519_sk.pub)"

Did you try just putting the public keys path into user.signingkey? Literal keys would need to be prefixed with `key::`

git config --global user.signingkey ~/.ssh/id_ed25519_sk.pub should be just fine.

Also, the private key needs to be available in your ssh agent. If in doubt you can check with a `ssh-add -L`.

Show 17 quoted lines

>git commit -S --allow-empty --message="Testing"
>```
>
>Bnd I get this error:
>```
>error: Couldn't load public key sk-ssh-ed25519@openssh.com <my key 
>id>: No such file or directory?
>
>fatal: failed to write commit object
>```
>I did the same thing with a plain ed25519 keypair and worked.
>
>Am I doing anything wrong or security keys aren't supported yet?
>
>Thank you for any help,
>-- 
>Marcos Alano