NAME
Crypt::Diceware - Random passphrase generator loosely based on the
Diceware algorithm
VERSION
version 0.003
SYNOPSIS
use Crypt::Diceware;
my @phrase = words(4); # qw/starker call recur outlaw/
# with alternate word lists
use Crypt::Diceware words => { wordlist => 'Original' };
use Crypt::Diceware words => { wordlist => 'Beale' };
DESCRIPTION
This module generates a random passphrase of words based loosely on the
Diceware <http://world.std.com/~reinhold/diceware.html> algorithm by
Arnold G. Reinhold.
A Diceware passphrase consists of a randomly selected words chosen from
a list of over seven thousand words. A passphrase of four or five words
is likely to be stronger than typical human-generated passwords, which
tend to be too-short and over-sample common letters ("e") and numbers
("1").
Words are selected by randomly using Data::Entropy, which is reasonably
cryptographically strong.
USAGE
By default, this module exports a single subroutine, "words", which uses
the Crypt::Diceware::Wordlist::Common word list.
An alternate wordlist may be specified:
use Crypt::Diceware words => { wordlist => 'Original' };
Exporting is done via Sub::Exporter so any of its features may be used:
use Crypt::Diceware words => { -as => 'passphrase' };
my @phrase = passphrase(4);
words
my @phrase = words(4);
Takes a positive numeric argument and returns a passphrase of that many
randomly-selected words. In a list context it will return a list of
words, as above. In a scalar context it will return a string with the
words separated with a single space character:
my $phrase = words(4);
Returns the empty list / string if the argument is missing or not a
positive number.
SEE ALSO
Diceware and Crypt::Diceware related:
* Diceware <http://world.std.com/~reinhold/diceware.html>
* Crypt::Diceware::Wordlist::Common
* Crypt::Diceware::Wordlist::Original
* Crypt::Diceware::Wordlist::Beale
Other CPAN passphrase generators:
* Crypt::PW44
* Crypt::XkcdPassword
* Review of CPAN password/phrase generators
<http://neilb.org/reviews/passwords.html>
About password strength in general:
* Password Strength (XKCD) <http://xkcd.com/936/>
* Password Strength (Wikipedia)
<http://en.wikipedia.org/wiki/Password_strength>
SUPPORT
Bugs / Feature Requests
Please report any bugs or feature requests through the issue tracker at
<https://github.com/dagolden/crypt-diceware/issues>. You will be
notified automatically of any progress on your issue.
Source Code
This is open source software. The code repository is available for
public review and contribution under the terms of the license.
<https://github.com/dagolden/crypt-diceware>
git clone git://github.com/dagolden/crypt-diceware.git
AUTHOR
David Golden <dagolden@cpan.org>
CONTRIBUTOR
Neil Bowers <neil@bowers.com>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2013 by David Golden.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004