NAME
Digest::Whirlpool - A 512-bit, collision-resistant, one-way hash
function
ABSTRACT
WHIRLPOOL is a 512-bit, collision-resistant, one-way hash function
developed by Paulo S. L. M. Barreto and Vincent Rijmen. It has been
recommended by the NESSIE project (along with SHA-256/384/512) and
adopted as ISO/IEC 10118-3.
SYNOPSIS
In programs:
# Using L<Digest> (recommended)
use Digest;
my $whirlpool = Digest->new( 'Whirlpool' );
# Get a hash and reset the object
$whirlpool->add( "hash this" );
my $hexdigest = $whirlpool->hexdigest;
# Populate the object again, and clone it before getting the
# digest to avoid resetting
$whirlpool->add( "hash this" );
my $b64digest = $whirlpool->clone->b64digest;
$whirlpool->add( "add this to the hash" );
# Using this module directly (same interface)
use Digest::Whirlpool;
my $whirlpool = Digest->new( 'Whirlpool' );
$whirlpool->add( ... );
....
From the command line:
whirlpoolsum files
whirlpoolsum --help
DESCRIPTION
Provides an interface to the WHIRLPOOL hash algorithm. This module
subclasses Digest::base and can be used either directly or through the
Digest meta-module. Using the latter is recommended.
EXPORT
None.
METHODS
Since this module implements the standard Digest interface and should be
used through the Digest module you should look at that documentation for
the general interface, below is a description of methods that differ.
clone
Copy the internal state of the current object into a new object and
return it.
reset
Resets the object to the same internal state it was in when it was
constructed.
This works exactly like "new" except it doesn't allocate new memory for
its internal state.
base64digest
An legacy alias for the b64digest method which should be used instead.
hashsize
Returns the size (in bits) of a WHIRLPOOL hash, i.e. 512.
SEE ALSO
* NESSIE consortium, *Portfolio of recommended cryptographic
primitives*, February 27, 2003.
* <
http://paginas.terra.com.br/informatica/paulobarreto/WhirlpoolPage.
html>
AUTHORS & HISTORY
The original version of this package was written by Julius C. Duque in
2003. It was rewritten by Ævar Arnfjörð Bjarmason <
[email protected]> in
January 2007 who added compatability with the Digest interface, improved
documentation and a whirlpoolsum(1) command-line utility amongst other
things.
BUGS
Please report any bugs that aren't already listed at
<
http://rt.cpan.org/Dist/Display.html?Queue=Digest-Whirlpool> to
<
http://rt.cpan.org/Public/Bug/Report.html?Queue=Digest-Whirlpool>
LICENSE
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Copyright 2003 Julius C. Duque and 2007 Ævar Arnfjörð Bjarmason.
