DisPass is a passphrase generator for GNU/Linux, *BSD, MacOS X and Windows. It enables you to generate unique passphrases formed from a master password and a label, helping you get rid of the bad habit of using a single password for multiple websites. When using a different passphrase for every website, the chance of abuse of your password on other sites (when a website leaks it) is eliminated. Dispass is a console application, but also has a simple graphical interface.
DisPass has several homes on the Internet:
- Main website
- The cheeseshop (PyPI) project page
- Github repository and Issue tracker
- Bitbucket repository
Here are some definitions which may help you understand the rest of the documentation better.
- A label is a string that you use to identify the passphrase. This can be a domainname of the service the passphrase is used for, e.g. 'google.com'.
Since this program asks for a password/passphrase to generate another password/passphrase, things may get a bit confusing. I've dediced to use the words 'password' and 'passphrase' diffently and consistent.
- Use of the word 'password' is dedicated to the input password, i.e. the password you are asked to enter and only you know. Whenever you read password, this is the one I mean.
- With 'passphrase' I always mean the output passphrase, i.e. the passphrase that is unique and generated from a label and password
A recent version of Python 2 is required for running dispass.
Using pip to download from the Python Package Index
The recommended way is to download and install directly from the PyPI repository using pip:
$ sudo pip install dispass
You must have python's docutils installed in able to do so. This will install the dispass module in python's dist-packages folder. You can now run dispass using the 'dispass' and 'gdispass' scripts placed under '/usr/local/bin/' or '/usr/bin/'.
The PyPI project page is at http://pypi.python.org/pypi/DisPass/
Latest (development) version
Clone git repo:
$ git clone git://github.com/babab/DisPass.git $ cd dispass
Then you can either:
Install through pip:
$ python setup.py sdist $ sudo pip install dist/DisPass-<version>.tar.gz
$ sudo python setup.py install
Upgrade or uninstall
You can easily upgrade to newer versions using pip:
$ sudo pip install dispass --upgrade
If you have installed dispass using pip, you can easily uninstall at any moment:
$ sudo pip uninstall dispass
Using the command line app
When DisPass is executed as 'gdispass' or 'dispass -g', the graphical version will be started.
You can use dispass by entering your labels after the dispass command and/or you can store your labels in a textfile called a labelfile.
dispass [-cghoV] [-f labelfile]
dispass [-co] [-l length] label [label2] [label3] [...]
|-c||use if this passphrase is new (check input PW)|
|-g||start guided graphical version of DisPass|
|-h||show this help and exit|
|-o||output passphrases to stdout (instead of the more secure way of displaying via curses)|
|-V||show full version information and exit|
|-f <labelfile>||set location of labelfile (default: ~/.dispass)|
|-l <length>||set length of passphrase (default: 30, max: 171)|
|--create||use if this passphrase is new (check input PW)|
|--gui||start guided graphical version of DisPass|
|--help||show this help and exit|
|--output||output passphrases to stdout (instead of the more secure way of displaying via curses)|
|--version||show full version information and exit|
|set location of labelfile (default: ~/.dispass)|
|set length of passphrase (default: 30, max: 171)|
Using dispass to create one or more passphrases
You can start using dispass for e.g. google.com like this:
$ dispass -c google.com
Now you will be asked to enter a password twice and after that your passphrase will be shown on the screen. This will now be the passphrase you will use for logging in to google.com It can be created everytime you need it by running:
$ dispass google.com
The -c argument we used before was just a way to make sure to not make typos when creating passphrases for the first time. It is advised you use this everytime you create a passphrase for a new label.
The passphrases created are 30 characters long by default, but some website's may not validate such a long passphrase or you might want to make it even longer. You can easily set a desired passphrase length using the -l flag. If you wanted to make your google.com 18 chars you can run:
$ dispass -c -l 18 google.com
Generating passphrases for multiple labels is just as easy:
$ dispass google.com yahoo.com
Using a labelfile
When dispass is run without arguments it will try to find a labelfile. The location of this file varies and depends on the platform type you use:
- GNU/Linux and Mac OS X: ~/.dispass
- *BSD and other Unixen: ~/.dispass
- Windows: C:\Users\<username>\.dispass
You can start by copying the labelfile from skel/dot.dispass to this location and editing it by adding your own labels. Or you can just start writing the file from scratch which really isn't a hard thing to do.
The labels need to be specified on a single line with optional arguments. A typical labelfile might look like this:
google.com length=18 yahoo.com
Now, when running dispass without arguments it will create two passphrases with varying lengths.
You can override the location of the labelfile using the -f flag. This can be a way for you to use different sets of labels/passphrases with a different 'master' password for each set.
Got Emacs? You can use the Emacs wrapper
If you have Emacs you can use the Emacs wrapper written by Tom Willemsen (ryuslash). Read more about it in the README of the 'emacs/' folder.
Support / ideas / questions / suggestions
Please use the Issue tracker at github: https://github.com/babab/DisPass/issues
You can also visit #dispass at OFTC (irc.oftc.net) with your favorite IRC client.
Copyright (c) 2011-2012 Benjamin Althues <email@example.com>
Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.