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Joey Hess 2024-09-18 09:08:42 -04:00
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[[!comment format=mdwn
username="joey"
subject="""comment 2"""
date="2024-09-18T12:17:02Z"
content="""
Another place this came up is
<https://git-annex.branchable.com/design/passthrough_proxy/#index14h2>
where a proxy to an encrypted special remote necessarily does encryption
server side, but the user may not want the server to see their unencrypted
files.
There I suggested "adding a special remote that does its own client-side
encryption in front of the proxy". Such a layered special remote could also be
used with a git remote. There would be some complexity cost, since you would
have two remote names, one used for git and the other for git-annex.
Implementing object encryption in git remotes is certianly possible, but it
would be a special case and the existing code for encrypting special
remotes (particularly Remote.Helper.Special.specialRemote)
would not be able to be reused.
There's also the problem that, if such a git repository is added as a
regular remote, and the git-annex branch that indicates that it is
encrypted has not yet been pulled, git-annex would not realize that it is
supposed to be encrypted, so would send unencrypted objects to it. This
seems like an easy situation to accidentially get into eg:
git remote add foo http://example.com/
git annex move --to foo # oops unencrypted
Overall I prefer the idea of layering an encrypted special remote to
complicating the git remote with encryption. Enabling that special remote
could make git-annex treat the underlying remote as annex-ignore, to
prevent accidentially sending unencrypted objects to it.
There could also be situations where you want to store some files unencrypted
on a git hosting site to let them be accessible via its UI, but encrypt other
files, and the layered special remote also allows for that kind of thing.
"""]]