This is interesting - age can #encrypt a file to an #SSH key. Thus, it can be used to easily encrypt a file to a #Github user.
This is possible because a user's public SSH keys are visible at `github.com/username.keys`. I've tested this with #Gitea, and it seems it also makes public SSH keys visible by default.
https://github.com/FiloSottile/age#encrypting-to-a-github-user