Xkcd936
xkcd936 style passphrase generator.
But we use 5 words as default instead of 4, since 5 words will achieve an entropy of:
log(99171)/log(2)*5 = 82.988
This is enough. NIST recommends 80-bits for the most secure passwords. And it roughly needs 6 billions USD to break.
Installation
Add this line to your application's Gemfile:
gem 'xkcd936'
And then execute:
$ bundle
Or install it yourself as:
$ gem install xkcd936
Usage
As a library:
require 'xkcd936'
Xkcd936.generate_passphrase(4, 'path/to/dictionary/file')
If you does not specify how many words you want, it will use the default value 5
.
If you does not give a path, it will use /usr/share/dict/words
as default.
As a command line tool:
; xkcd936
Contributing
- Fork it ( https://github.com/weakish/xkcd936/fork )
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Add some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create a new Pull Request