[[!meta title="Keyringer: encrypted and distributed secret sharing software"]]

Keyringer lets you manage and share secrets using GPG and git with custom
commands to encrypt, decrypt, recrypt, create key pairs, etc.

- Project page: [https://keyringer.pw](https://keyringer.pw)
- Issue tracker: [https://keyringer.pw/trac](https://keyringer.pw/trac)
- Tor hidden service: [http://y6ntvl5bzs3c7ffa.onion](http://y6ntvl5bzs3c7ffa.onion)
- Contact: rhatto at keyringer.pw

Installation
------------

Just clone

    git clone git://git.sarava.org/keyringer.git

And then leave it somewhere, optionally adding it to your `$PATH` environment variable
or package it to your preferred distro.

Creating a keyringer repository
-------------------------------

The first step is to setup a keyring.

Keyringer supports management of multiple isolated keyrings.  To start
a new keyring (or register an existing one with your config file), run:

    keyringer <keyring> init <path> [remote]

This will 

  1. Add an entry at `$HOME/.keyringer/config` aliasing 'keyring' to 'path'.
  2. Initialize a git repository if needed.

For example,

    keyringer friends init $HOME/keyrings/friends

will create an alias "friends" pointing to `$HOME/keyrings/friends`. All
other keyring actions should be called using this alias.

If there is an existing remote keyring git repository and you just
want to checkout it, use

    keyringer friends init $HOME/keyrings/friends <repository-url>

Managing recipients
-------------------

Your next step is tell keyringer the GPG key ids to encrypt files to:

    keyringer <keyring> recipients edit [recipient-name]
    keyringer <keyring> recipients ls

Keyringer support multiple recipients in a per-folder style. Try it by
creating a sample keyringer

    keyringer <keyring> recipients edit closest-friends

Fill it with your friends key IDs. Now encrypt a secret just for then:

    keyringer <keyring> encrypt closest-friends/secret

In other words, if keyringer finds a recipient file matching a given path,
it will use it instead of the global recipients file.

Managing secrets
----------------

Each secret has a corresponding file in your `keys` subdirectory.

Keyringer is agnostic about how you store your secrets. You may choose to have
one encrypted file that contains one line for each secret, e.g. a single file called
secrets with lines such as:

    emma : root : secret1
    emma - /dev/hda : : secret2

Or you may also have a different encrypted file for each secret, e.g. a file called
emma.root that contains the root passphrase for the server named emma and
another called emma.hda with the passphrase to decrypt /dev/hda on emma.

Encrypting a secret

    keyringer <keyring> encrypt <file>

Encrypting a secret from a file

    keyringer <keyring> encrypt <plaintext-file> <file>

Decrypting a secret (only to stdout)

    keyringer <keyring> decrypt <file>

Re-encrypting a secret or the whole repository

    keyringer <keyring> recrypt [file]

Appending information to a secret

    keyringer <keyring> append <file>

Editing a secret

To edit a secret, use

    keyringer <keyring> edit <file>

Use this option with caution as it keeps temporary unencrypted data
into keyringer temp folder and at your editor's temp files.

Listing secrets

    keyringer <keyring> ls [arguments]

Git wrapper
-----------

Keyringer comes with a simple git wrapper to ease common management tasks:

    keyringer <keyring> git remote add keyringer <url>
    keyringer <keyring> git push keyringer master
    keyringer <keyring> git pull

Configuration files, preferences and options
--------------------------------------------

  1. Main config file: `$HOME/.keyringer/config`: store the location of
     each keyring.

  2. User preferences per keyring: `$HOME/.keyringer/<keyring>`: managed by
     "keyringer <keyring> preferences".

  3. Custom keyring options: `$KEYRING_FOLDER/config/options`: managed by
     "keyringer <keyring> options".

Using a non-default OpenPGP key
-------------------------------

If you want to use a different key other than your default for a given
keyringer, use

    keyringer <keyring> preferences add KEYID=<fingerprint>

Example:

    keyringer <keyring> preferences add KEYID=0123456789ABCDEF0123456789ABCDE012345678

Notes
-----

  1. The `<file>` is any file inside the `keys/` folder of your
     keyring directory.

  2. Never decrypt a key and write it to the disk, except
     if you're adding it to your personall keyring.

  3. Recipients are defined at file `config/recipients`.
     Take care to add just trustable recipients.

Concepts
--------

Basic idea is:

  - Encrypt stuff with ppl's gpg pubkeys and push the output in a git repo.

  - Let ppl keep it in sync with the repo and the keys are shared :)

For "key" it's meant anything as the script work with stdin and output things to
files, so it can be passphrases, private keys or other kind of info.

It's possible to share keys using an encrypted mailing list, but the main
difficulty is to track the message where the keys are.

With theses scripts, the workflow is more or less like this:

  - You have a git repo for secret keys.

  - You run the "encrypt" command and paste your private key to this
    command (so no plaintext disk write).

  - The encrypt command writes an encrypted file to the repo.

  - You manually add it to git and push it to remote repositories.

  - Optionally, other ppl pulls the changes but they dont need to
    decrypt anything until they need to use the keys.

So it's just gpg-encrypted data atop of a git repository (one can think of a
kind of distributed encrypted filesystem).

Git was chosen to host encrypted info mostly for two reasos: easy to distribute
and its the only VCS known to make easier repository history manipulation.

One possible drawback: the repo has pubkey information attached, which can be
linked to real ppl (and then disclose the information about who has access to a
given key), but it's possible to:

  - Keep the repo just atop of an encrypted and non-public place.        

  - Or to consider an integration with gpg's --hidden-recipient option.

Requirements
------------

Keyringer needs:

  - [Bash](http://tiswww.case.edu/php/chet/bash/bashtop.html)
  - [Git](http://git-scm.com)
  - [GNU](Privacy Guard - http://gnupg.org)
  - Grep, awk, tail, cut, sed and other GNU tools

Optional dependencies if you want to manage ssl keys:

  - [OpenSSL](http://www.openssl.org)