NAME
Crypt::XKCDCommon1949 - xkcd password style wordlist provider
SYNOPSIS
use Crypt::XKCDCommon1949 qw(xkcd_common_1949);
my @wordlist = xkcd_common_1949;
# but you probably want to use the interface to Crypt::Diceware
# or Crypt::XkcdPassword or Acme::MetaSyntatic described below
DESCRIPTION
Crypt::XKCDCommon1949 providers a simple wordlist based on the 1949
english words most frequently occurening in newspapers published by
<
http://passphra.se> (which is in turn based on data published at
<
http://www.paulnoll.com/Books/Clear-English/English-3000-common-words.h
tml>)
This list of words is handy as it represents a compromise between having
a reasonable number of words to pick from (almost 11 bits of entropy per
word) and having a word that someone is likely to be able to remember.
Please be aware that while passwords generated with this wordlist are
much more secure than the standard type "human readable" password if
many randomly picked words are used to constuct a password, the
passwords are not as secure as less readable passwords consisting of
random characters (such as those generated by password vault software
such as 1Password.) Use at your own risk.
Exported Symbols
Can be exported on demand or used fully qualified
xkcd_common_1949
Function returning 1949 common english words.
@words
Array containing 1949 common english words.
Using this module with other Perl modules
Support is baked in for other modules:
Crypt::Diceware
Crypt::Diceware is the most secure of the options listed here, using
proper random numbers to pick the words. It requires non-pure-perl
dependancies however.
use Crypt::Diceware words => { wordlist => 'XKCDCommon1949' }
say join " ", words(4);
Crypt::XkcdPassword
Crypt::XkcdPassword can be configured to use proper random numbers,
but by default (as in the example shown below) it doesn't.
say Crypt::XkcdPassword->new( words => "XKCDCommon1949" )
->make_password(4);
Acme::MetaSyntatic
For completeness. Doesn't have proper random number generator,
relies on List::Util's "shuffle" method to do the random picking.
use Acme::MetaSyntactic qw( xkcdcommon1949 );
say join " ", metaxkcdcommon1949(4);
AUTHOR
Written by Mark Fowler <
[email protected]>
COPYRIGHT
Copyright Mark Fowler 2013. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Note that the majority of this module is just a table of data taken from
<
http://passphras.se>. Tables of data aren't generally considered
copyrightable (see
<
http://www.lib.umich.edu/copyright-office-mpublishing/copyrightability-
charts-tables-and-graphs> for an explanation)
BUGS
Bugs should be reported via this distribution's CPAN RT queue. This can
be found at <
https://rt.cpan.org/Dist/Display.html?Crypt-XKCDCommon1949>
You can also address issues by forking this distribution on github and
sending pull requests. It can be found at
<
http://github.com/2shortplanks/Crypt-XKCDCommon1949>
SEE ALSO
<
http://xkcd.com/936/>,
<
http://preshing.com/20110811/xkcd-password-generator>
Crypt::Diceware, Crypt::XkcdPassword, Acme::MetaSyntactic
