Is this about commit signing? Git and all of the mentioned forges (by uploading the public key in the settings) support SSH keys for that afaik.
git configuration:
gpg.format = ssh
user.signingkey = /path/to/key.pub
If you need local verification of commit signatures you need gpg.ssh.allowedSignersFile too to list the known keys (including yours). ssh-add can remember credentials. Security keys are supported too.
Is this about commit signing? Git and all of the mentioned forges (by uploading the public key in the settings) support SSH keys for that afaik.
git configuration:
gpg.format = ssh
user.signingkey = /path/to/key.pub
If you need local verification of commit signatures you need gpg.ssh.allowedSignersFile too to list the known keys (including yours). ssh-add can remember credentials. Security keys are supported too.