pstore :: Python Protected Password Store
Do you want to store and share passwords? With pstore you store the encrypted passwords on a remote server. All encryption is done locally by the command line interface, so the server never sees your unencrypted passwords.
pstore allows you to store and retrieve passwords and other sensitive data in a safe manner. The permission system allows you to share these secrets with others on the same pstore server.
For passwords and other secret items, you encrypt them on the client side automatically with the pstore client. This way the pstore server never has any knowledge of the secret content, and your data is secure (*) even when the server is breached.
Encryption is done using GPG. One of the admins installs your public key on the pstore server. After that you're ready to go.
(*) Security of course depends on everyone using strong secret keys and everyone keeping them private.
You have set your
$ cat ~/.pstorerc --store-url=https://my.pstore.server/
List all machines that contain example in the name:
$ pstore example Machine User access ------------------------------------------------------------------------ + new.example.com joe, walter + walter.example.com walter
List machine password for
$ pstore walter.example.com ip-address = 22.214.171.124 password = wAlTeR!
Add a new machine password, also accessible for joe:
$ pstore -c walter2.example.com +joe Type new machine password: Type new machine password again: $ pstore example Machine User access ------------------------------------------------------------------------ + new.example.com joe, walter + walter.example.com walter + walter2.example.com joe, walter $ pstore walter2.example.com password = abc
Add a public (unencrypted) and shared (encrypted) property to the new machine:
$ printf walter2 | pstore walter2.example.com -ps ssh-username $ cat ssl-cert.key | pstore walter2.example.com -pe ssl-cert.key $ pstore walter2.example.com ssh-username = walter2 ssl-cert.key = (1533 byte encrypted) password = abc
contrib directory for bash completion scripts and a dirty hack to
supply the password to the ssh client automatically.
Installing the pstore client is a matter of running
pip install ./pstore-<version>.tar.gz. This will install the necessary
requirements and install the pstore binary in your path.
Installing the pstore server is a little bit more work:
pstore, the client (see above).
- Refer to the Django project for detailed django installation procedures.
But it should basically be something like this:
- Make a virtualenv (optional).
- Install the requirements from requirements.txt (optional, the django-pstore installation does this too).
pstore/settings.pyand configure as needed. Those comfortable with Django, can choose to integrate it into a different project. Don't forget to set the
- Make known where your settings are, by exporting the
DJANGO_SETTINGS_MODULEenvironment variables with the right values.
django-admin.py syncdb. It will create the necessary tables and an admin account for you.
- Check and alter
- You can now run the development server to test:
django-admin.py runserver. When you're done testing you should set it up on a proper webserver (nginx+uwsgi, apache+mod_wsgi or whatever floats your boat). Don't forget to tell the wsgi server your virtualenv path if you're using that.
Set up users and keys:
If you used the supplied
pstore/settings.pyyou'll surf to
localhost:8000(or where the site is running). Supply your admin credentials.
Auth -> Users. Add users as appropriate.
Pstore -> Public keys. Add a single public key for every user that should be using the system. A GPG public key can be extracted from your keyring using
gpg --export --armor email@example.com. The
keyvalue should look something like this. The
descriptionis for human consumption only.
-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.11 (GNU/Linux) | mI0EULkssgEEAKeoPrMO5CHxoO8/KTXLA1FP2IQr4n3Og+DvsziIZ6vdcDmhtcsx ... AK968N1Yrw+ytDuus3s7xPXYAw== =TEm/ -----END PGP PUBLIC KEY BLOCK-----
If you have good reasons, you can go old style and use the SSH public key here, like this:
ssh-rsa AAAAq2qMaC2...fBPcPsqMcwqsMHnBCzA= myname@myserver
Using GPG is preferred however.
Set up the client:
- You'll install the pstore client package on all machines that you'll want to connect from.
- Set up
~/.pstorerc. You can put anything in there that you see in
pstore --help, but generally you'll want one or more
--store-url=items in there. And possibly a
pstore -c my.first.machineto create a password for my.first.machine.
You're ready to go. Call the pstore client with
--help --verbose for more help and tips.
How do I install a downloaded tgz?
sudo pip install ./pstore-<version>.tar.gz sudo pip install ./django-pstore-<version>.tar.gz
For the client you'll only need the first package.
configure: error: no acceptable C compiler found in $PATH
.. or various other compile related errors when running
Make sure you have a C compiler (gcc) and python development headers.
sudo apt-get install build-essential sudo apt-get install python-dev
Or you could install the dependencies manually.
# for the client and server sudo apt-get install python-gpgme python-pyasn1 python-crypto # for the server sudo apt-get install python-django python-mysqldb
fatal error: gpgme.h: No such file or directory
pygpgme requires the libgpgme development headers.
sudo apt-get install libgpgme11-dev
Couldn't find index page for 'pstore' (maybe misspelled?)
Make sure you install the
pstore package before installing
This shouldn't be necessary anymore, as we've uploaded that package to PyPI.
How do I uninstall?
Uninstalling the client package is done using pip:
sudo pip uninstall pstore
You may need to
rm /usr/local/bin/pstore manually.
For the server, you'll probably need to do more than just
django-pstore. After all, you put the app in a Django
project and you created a database for it.
Note that dependencies like Django, pyasn1, pycrypto, pygpgme, aren't uninstalled automatically.
ImportError: No module named pstorelib.bytes
./bin/pstore when developing, you'll need to tell it where the
NOTICE: re-using cached password
To make the application usable, decryption passphrase information has to be cached. Preferably, this is done using some kind of password agent like gpg-agent. If such an agent is unavailable, we cache the password in cleartext in memory for the duration of the pstore command.
The NOTICE is there to remind you that it is not as safe as it could be.
How do I make password caching agents forget my password?
Your graphical desktop environment generally starts a password caching daemon. That could be seahorse-agent or gpg-agent or something else.
I couldn't find a way to reliably clear the seahorse-agent password cache. I only found reliable ways to kill it by accident (on Ubuntu 10.04).
The gpg-agent (gnupg-agent package) seemed more stable. (Log out and in
after install.) Making it forget your cached passphrase is a matter of sending
pkill -HUP gpg-agent
(If you're now wondering, like me, who then caches your decrypted private ssh
key: it's the ssh-agent, even though it's the gnome-keyring who asked for the
password. Clearing the ssh-agent cache is a matter of doing
crypto error: encrypt message too long
You're probably trying to set a larger property on an object where an sshrsa user has permissions. Either convert all users to use GPG or upload the large property as public (unencrypted!) property.
Issues with large file support
When running the integration test, you could see something like this:
* Large file support (adding large public file): backend error: could not connect to http://127.0.0.1:8000 FAIL: could not write large unencrypted file > NOTICE: not encrypting the value
This is likely caused by apparmor(1) on the mysqld. We need read/write permissions in /tmp.
Further, you may need to increase the
max_allowed_packet to something higher
16MB if you want to store larger files.