git-crypt init the reop to crypt.
.gitattributes to specify file to crypt.
secretfile filter=git-crypt diff=git-crypt
*.key filter=git-crypt diff=git-crypt
.gitattributes !filter !diff
secretfile/*.key is the file pattern. ".gitattributes !filter !diff" means this .gitattributes should not be locked.
when the file to be locked is in the sub-folder, should put the .gitattributes in the same sub-folder which is like the git-crypt.
propose to use the key generated by git-crypt and stored in the other folder.
git-crypt export-key /path/to/keyfile
as example git-crypt export-key git-crypt-key/keyfile
and then should use the
git-crypt unlock /path/to/keyfile
as example: git-crypt unlock git-crypt-key/keyfile
but i don't know how to use special key to encrypt each file.
the file will be automatically encrypted after git push to repo.