[SAC] password store

[Sandro Santilli]

Hi all, I've been thinking about replacing our manually crafted
solution for sharing osgeo secrets with a standard tool based
on GPG: https://www.passwordstore.org

The "passwordstore" tool comes as a unix commandline (pass)
distributed pretty much on all standard free u*x systems.

The idea is to replace the "access" directory we currently
have on the "secure" host with a "password store" directory.
The change would be that the files would be stored encrypted
rather than in plain-text, and so all SAC members would need
to provide a GPG key to use for such encryption.

Internally, the encryption will be done using a symmetric key
and the symmetric key itself will be encrypted multiple times
with the key of each SAC member. I've tested this with Jurgen
and it seems to work pretty smoothly.

Such "password store" could then be distributed in a git
repository, which I've started here:

    https://git.osgeo.org/gitea/sac/password-store

The repository is also "private" so you need to be a SAC member
to access it. If you like the idea, please provide your GPG
public key, maybe filing an issue on the above repository,
and start experimenting with it.

Thanks

--strk;