Thread (3 messages) flat view 3 messages, 3 authors, 2016-06-15

Re: Encrypted repositories

From: Junio C Hamano <hidden>
Date: 2016-06-15 22:54:39

Enrico Weigelt [off-list ref] writes:
quoted
Enrico Weigelt [off-list ref] writes:
quoted
* blobs are encrypted with their (original) content hash as
  encryption keys
What does this even mean?

Is it expected that anybody who has access to the repository can
learn names of objects (e.g. by running "ls .git/objects/??/")? If
so, from whom are you protecting your repository?
Well, everybody can access the objects, but they're encrypted,
so you need the repo key (which, of course isn't contained in
the repo itself ;-p) to decrypt them.
So, in short, blobs are not encrypted with the hash of their
contents as encryption keys at all.
quoted
How does this encryption interact with delta compression employed
in pack generation?
Probably not at all ;-o

For the usecases I have in mind (backups, filesharing, etc) this
wouldn't hurt so much, if the objects are compressed before encryption.
For that kind of usage pattern, you are better off looking at
encrypted tarballs or zip archives.
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