git-secret is a bash tool which stores private data inside a git repo.
git-secret encrypts files with permitted users' public keys, allowing users you
trust to access encrypted data using pgp and their secret keys.

With git-secret, changes to access rights are simplified, and private-public
key issues are handled for you.

When someone's permission is revoked, secrets do not need to be changed with
git-secret - just remove their key from the repo's keyring using git secret
removeperson their@email.com, re-encrypt the files, and they won't be able to
decrypt secrets anymore. If you think the user might have copied the secrets or
keys when they had access, then you should also change the secrets.