This repository contains a very simple Ruby library for using the EFF's Diceware wordlists to generate secure passphrases.

"EFF®" is a registered trademark of the Electronic Frontier Foundation. This repository and project are in no way affiliated by, endorsed by, or associated with the Electronic Frontier Foundation Foundation.

Usage

Installation

Add this line to your application's Gemfile:

gem 'eff_passphrase'

And then execute:

$ bundle

Or install it yourself as:

$ gem install eff_passphrase

Invocation

require "eff_passphrase"

EffPassphrase.generate(num_words: 6)

This returns an object whose .to_s is the raw password, and which includes a helpful .bits_of_security field.

You can select a wordlist with the list kwarg; the following lists are available:

• eff_large_wordlist (default)
• eff_short_wordlist_1 (shorter words; you should use more of them to get the same bits of security)
• eff_short_wordlist_2_0 (shorter words; you should use more of them to get the same bits of security)
• unsafe_extremely_small (don't use this except for testing)