File encryption in Git Repository

Question

Is there any way (in built or add-on) to encrypt individual files in a repository, accessible by limited people. Files when checked in by those folks will auto encrypt and decry

Answer 1

I know my answer is late but there is plenty of alternatives for storing secrets in git repos:

1. Git-crypt
2. BlackBox
3. SOPS
4. Transcrypt

Most of them use GNU Privacy Guard (GPG), symmetric key encryption, and/or cloud key services (SOPS). If you just want a simple encryption mechanism with password you can also take a look at ansible vault, which doesn't require generating keys for each account.