Add SSH signing

[ptman]

Feature Description

Like GPG signing, but with SSH keys

git/git#1041

Screenshots

No response

[unbeatable-101]

Git v2.34.0 is out now with support for this.

[melvincarvalho]

Yes, I'm using it. It's great. Here's what it looks like currently on github:

https://github.com/melvincarvalho/melvincarvalho.com/commits/gh-pages

git verify-commit also works

I've mailed github support about changing that from unverified -> verified ... hopefully soon!

[unbeatable-101]

If you click on the unverified you can see it is recognized as signed, just GitHub doesn't know how to read it.

GitHub supports GPG and S/MIME signatures. We don’t know what type of signature this is.

See also: community/community#7744

[42wim]

I'm going to try and implement this.
Already created a library to create/verify those armored ssh signatures (https://github.com/42wim/sshsig)