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

[Fabian Stelzer <fs@gigacodes.de>]

On 27.06.2022 21:09, Marcos Alano wrote:
>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`.

>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