Digest::Whirlpool - A 512-bit, collision-resistant, one-way hash function

<!DOCTYPE html> <html lang="en-US"> <head> <title>Digest::Whirlpool - A 512-bit, collision-resistant, one-way hash function - metacpan.org</title> <link rel="preload" as="fetch" href="/account/login_status" crossorigin="anonymous" /> <link href="/assets/style-XFEQ536G.css" rel="stylesheet" type="text/css"> <script src="/assets/main-WXBSEDQJ.js" type="module"></script> <link rel="alternate" type="application/rss+xml" title="Recent CPAN Uploads of Digest-Whirlpool - MetaCPAN" href="/dist/Digest-Whirlpool/releases.rss" /> <link rel="canonical" href="https://metacpan.org/pod/Digest::Whirlpool" /> <meta name="description" content="A 512-bit, collision-resistant, one-way hash function" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5"> <link rel="shortcut icon" href="/static/icons/favicon.ico"> <link rel="apple-touch-icon" sizes="152x152" href="/static/icons/apple-touch-icon.png"> <link rel="search" href="/static/opensearch.xml" 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<span class="relatize">01 Dec 2014 21:20:58 UTC</span> </div> </li> <li> Distribution: <a href="/dist/Digest-Whirlpool">Digest-Whirlpool</a> </li> <li> Module version: 2.04 </li> <li> <a data-keyboard-shortcut="g s" href="/dist/Digest-Whirlpool/source/Whirlpool.pm">Source</a> (<a href="/dist/Digest-Whirlpool/source/Whirlpool.pm?raw=1">raw</a>) </li> <li> <a data-keyboard-shortcut="g b" href="/dist/Digest-Whirlpool/source">Browse</a> (<a href="/dist/Digest-Whirlpool/source?raw=1">raw</a>) </li> <li> <a data-keyboard-shortcut="g c" href="/dist/Digest-Whirlpool/changes">Changes</a> </li> <li> <a rel="noopener nofollow" class="nopopup" href="http://metacpan.org/release/Digest-Whirlpool">Homepage</a> </li> <li> <a class="nopopup" href="/dist/Digest-Whirlpool/contribute">How to Contribute</a> </li> <li> <a rel="noopener nofollow" data-keyboard-shortcut="g r" href="https://github.com/avar/digest-whirlpool">Repository</a> </li> <li> <a rel="noopener nofollow" data-keyboard-shortcut="g i" href="https://rt.cpan.org/Public/Dist/Display.html?Name=Digest-Whirlpool">Issues</a> (0) </li> <li> <a rel="noopener nofollow" href="http://matrix.cpantesters.org/?dist=Digest-Whirlpool+2.04" title="Matrix">Testers</a> <span title="(pass / fail / na)">(<a rel="noopener nofollow" href="https://www.cpantesters.org/distro/D/Digest-Whirlpool.html?oncpan=1&distmat=1&version=2.04&grade=2" style="color: #090">38</a> / <a rel="noopener nofollow" href="https://www.cpantesters.org/distro/D/Digest-Whirlpool.html?oncpan=1&distmat=1&version=2.04&grade=3" style="color: #900">0</a> / <a rel="noopener nofollow" href="https://www.cpantesters.org/distro/D/Digest-Whirlpool.html?oncpan=1&distmat=1&version=2.04&grade=4">0</a>)</span> </li> <li> <a rel="noopener nofollow" href="http://cpants.cpanauthors.org/release/AVAR/Digest-Whirlpool-2.04">Kwalitee</a> </li> <li> <div class="ttip" data-toggle="tooltip" data-placement="bottom" title="The # people with an indexing permission on Digest-Whirlpool who have released something to CPAN in the last 2 years (i.e. the # people likely able to release critical fixes in a timely manner)"> Bus factor: 0 </div> </li> <li> <a rel="noopener nofollow" href="http://cpancover.com/latest/Digest-Whirlpool-2.04/index.html">100.00% Coverage </a> </li> <li> License: perl_5 </li> <li class="nav-header">Activity</li> <li> <div class="activity-graph"> <img src="/dist/Digest-Whirlpool/activity.svg?res=month" /> <div class="comment">24 month</div> </div> </li> <li class="nav-header">Tools</li> <li> <a itemprop="downloadUrl" href="https://cpan.metacpan.org/authors/id/A/AV/AVAR/Digest-Whirlpool-2.04.tar.gz"> Download (<span itemprop="fileSize">104.85KB</span>)</a> </li> <li> <a href="https://explorer.metacpan.org/?url=%2Fmodule%2FAVAR%2FDigest-Whirlpool-2.04%2FWhirlpool.pm"> MetaCPAN Explorer </a> </li> <li> <a href="/dist/Digest-Whirlpool/permissions"> Permissions </a> </li> <li> <a href="/dist/Digest-Whirlpool/releases.rss"> Subscribe to distribution </a> </li> 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<option value="/release/AVAR/Digest-Whirlpool-1.0.8/view/Whirlpool.pm" >1.0.8 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.7/view/Whirlpool.pm" >1.0.7 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.6/view/Whirlpool.pm" >1.0.6 (AVAR on 2007-07-07)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.5/view/Whirlpool.pm" >1.0.5 (AVAR on 2007-01-30)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.4/view/Whirlpool.pm" >1.0.4 (AVAR on 2007-01-26)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.1/view/Whirlpool.pm" >1.0.1 (JCDUQUE on 2003-06-09)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.0/view/Whirlpool.pm" >1.0.0 (JCDUQUE on 2003-06-07)</option> </optgroup> </select> </li> <li class="version-diff"> <select class="select-navigator form-control tool-bar-form"> <option disabled selected>Diff with version</option> <option disabled value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-2.04/Whirlpool.pm" >2.04 (AVAR on 2014-12-01)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-2.03/Whirlpool.pm" >2.03 (AVAR on 2014-10-05)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-2.02/Whirlpool.pm" >2.02 (AVAR on 2014-10-05)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-2.01/Whirlpool.pm" >2.01 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-2.00/Whirlpool.pm" >2.00 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.10/Whirlpool.pm" >1.0.10 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.9/Whirlpool.pm" >1.0.9 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.09/Whirlpool.pm" >1.09 (AVAR on 2009-10-19)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/JCDUQUE/Digest-Whirlpool-1.0.3/Whirlpool.pm" >1.0.3 (JCDUQUE on 2004-08-18)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/JCDUQUE/Digest-Whirlpool-1.0.2/Whirlpool.pm" >1.0.2 (JCDUQUE on 2003-07-29)</option> <optgroup label="BackPAN">' <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.8/Whirlpool.pm" >1.0.8 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.7/Whirlpool.pm" >1.0.7 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.6/Whirlpool.pm" >1.0.6 (AVAR on 2007-07-07)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.5/Whirlpool.pm" >1.0.5 (AVAR on 2007-01-30)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/AVAR/Digest-Whirlpool-1.0.4/Whirlpool.pm" >1.0.4 (AVAR on 2007-01-26)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/JCDUQUE/Digest-Whirlpool-1.0.1/Whirlpool.pm" >1.0.1 (JCDUQUE on 2003-06-09)</option> <option value="/release/AVAR/Digest-Whirlpool-2.04/diff/JCDUQUE/Digest-Whirlpool-1.0.0/Whirlpool.pm" >1.0.0 (JCDUQUE on 2003-06-07)</option> </optgroup> </select> </li> <li> <ul class="dependencies"> <li class="nav-header">Dependencies</li> <li><a href="/pod/Digest" title="Digest" class="ellipsis">Digest</a></li> <li><a href="/pod/Digest::base" title="Digest::base" class="ellipsis">Digest::base</a></li> <li><a href="/pod/Getopt::Long" title="Getopt::Long" class="ellipsis">Getopt::Long</a></li> <li><a href="/pod/MIME::Base64" title="MIME::Base64" class="ellipsis">MIME::Base64</a></li> <li><a href="/pod/Pod::Usage" title="Pod::Usage" class="ellipsis">Pod::Usage</a></li> <li><i class="ttip" title="dynamic_config enabled">and possibly others</i></li> <li> <hr> </li> <li> <a href="/module/Digest::Whirlpool/requires">Reverse dependencies</a> </li> <li> <a href="http://deps.cpantesters.org/?module=Digest%3A%3AWhirlpool">CPAN Testers List</a> </li> <li> <a href="https://cpandeps.grinnz.com/?dist=Digest-Whirlpool">Dependency graph</a> </li> </ul> </li> <li class="nav-header">Permalinks</li> <li> <a href="/release/AVAR/Digest-Whirlpool-2.04/view/Whirlpool.pm">This version</a> </li> <li> <a href="/pod/Digest::Whirlpool">Latest version</a> </li> <li> <div class="plussers"> <div class="nav-header">++ed by:</div> <div> <a class="display-all" href="/author/KRAUTCAT"><img src="https://www.gravatar.com/avatar/efd137d1577aa9df7fc833f6306958d5?d=identicon&s=20" title="KRAUTCAT" alt="KRAUTCAT"></a> </div>  <div> <a href="/dist/Digest-Whirlpool/plussers">1 PAUSE user</a> </div> </div> </li> <li> </li> </ul> </div> </nav> <div class="content-navigation"> <div class="breadcrumbs"> <span> <a data-keyboard-shortcut="g a" rel="author" href="/author/AVAR" class="author-name">Ævar Arnfjörð Bjarmason</a> </span> <span> / </span> <div class="release dist-release status-latest maturity-released"> <span class="dropdown"><b class="caret"></b></span> <select class="select-navigator "> <option selected value="/release/AVAR/Digest-Whirlpool-2.04/view/Whirlpool.pm" >2.04 (AVAR on 2014-12-01)</option> <option value="/release/AVAR/Digest-Whirlpool-2.03/view/Whirlpool.pm" >2.03 (AVAR on 2014-10-05)</option> <option value="/release/AVAR/Digest-Whirlpool-2.02/view/Whirlpool.pm" >2.02 (AVAR on 2014-10-05)</option> <option value="/release/AVAR/Digest-Whirlpool-2.01/view/Whirlpool.pm" >2.01 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-2.00/view/Whirlpool.pm" >2.00 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.10/view/Whirlpool.pm" >1.0.10 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.9/view/Whirlpool.pm" >1.0.9 (AVAR on 2014-10-04)</option> <option value="/release/AVAR/Digest-Whirlpool-1.09/view/Whirlpool.pm" >1.09 (AVAR on 2009-10-19)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.3/view/Whirlpool.pm" >1.0.3 (JCDUQUE on 2004-08-18)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.2/view/Whirlpool.pm" >1.0.2 (JCDUQUE on 2003-07-29)</option> <optgroup label="BackPAN">' <option value="/release/AVAR/Digest-Whirlpool-1.0.8/view/Whirlpool.pm" >1.0.8 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.7/view/Whirlpool.pm" >1.0.7 (AVAR on 2009-10-18)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.6/view/Whirlpool.pm" >1.0.6 (AVAR on 2007-07-07)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.5/view/Whirlpool.pm" >1.0.5 (AVAR on 2007-01-30)</option> <option value="/release/AVAR/Digest-Whirlpool-1.0.4/view/Whirlpool.pm" >1.0.4 (AVAR on 2007-01-26)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.1/view/Whirlpool.pm" >1.0.1 (JCDUQUE on 2003-06-09)</option> <option value="/release/JCDUQUE/Digest-Whirlpool-1.0.0/view/Whirlpool.pm" >1.0.0 (JCDUQUE on 2003-06-07)</option> </optgroup> </select> <a data-keyboard-shortcut="g d" class="release-name" href="/dist/Digest-Whirlpool">Digest-Whirlpool-2.04</a> </div> <span class="river-gauge-gauge"> <svg width="24px" height="15px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g> <title> River stage one 
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 • 1 total dependent </title> <rect x="0" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="5" y="0" width="4" height="15" fill="#e4e2e2" /> <rect x="10" y="0" width="4" height="15" fill="#e4e2e2" /> <rect x="15" y="0" width="4" height="15" fill="#e4e2e2" /> <rect x="20" y="0" width="4" height="15" fill="#e4e2e2" /> </g> </svg> </span> <div id="Digest-Whirlpool-fav" class="show-logged-in"> <form action="/account/favorite/add" style="display: inline" method="POST"> <input type="hidden" name="remove" value="0"> <input type="hidden" name="release" value="Digest-Whirlpool-2.04"> <input type="hidden" name="author" value="AVAR"> <input type="hidden" name="distribution" value="Digest-Whirlpool"> <button type="submit" class="favorite highlight"><span>1</span> ++</button> </form> </div> <div class="show-logged-out"> <button class="fav-not-logged-in favorite highlight"><span>1</span> ++</button> </div> / <span>Digest::Whirlpool</span> </div> </div> <main class="content"> <nav class="toc"> <div class="toc-header"><strong>Contents</strong></div> <ul> <li><a href="#NAME">NAME</a></li> <li><a href="#ABSTRACT">ABSTRACT</a></li> <li><a href="#SYNOPSIS">SYNOPSIS</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a></li> <li><a href="#EXPORT">EXPORT</a></li> <li><a href="#METHODS">METHODS</a> <ul> <li><a href="#clone">clone</a></li> <li><a href="#reset">reset</a></li> <li><a href="#base64digest">base64digest</a></li> <li><a href="#hashsize">hashsize</a></li> </ul> </li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#AUTHORS-%26-HISTORY">AUTHORS & HISTORY</a></li> <li><a href="#BUGS">BUGS</a></li> <li><a href="#LICENSE">LICENSE</a></li> </ul></nav> <div class="pod anchors"> <h1 id="NAME">NAME</h1> <p>Digest::Whirlpool - A 512-bit, collision-resistant, one-way hash function</p> <h1 id="ABSTRACT">ABSTRACT</h1> <p>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.</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <p>In programs:</p> <pre><code># 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( ... ); ....</code></pre> <p>From the command line:</p> <pre><code>whirlpoolsum files whirlpoolsum --help</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>Provides an interface to the WHIRLPOOL hash algorithm. This module subclasses <a href="/pod/Digest::base">Digest::base</a> and can be used either directly or through the <a href="/pod/Digest">Digest</a> meta-module. Using the latter is recommended.</p> <h1 id="EXPORT">EXPORT</h1> <p>None.</p> <h1 id="METHODS">METHODS</h1> <p>Since this module implements the standard <a href="/pod/Digest#OO-INTERFACE">Digest interface</a> and should be used through the <a href="/pod/Digest">Digest</a> module you should look at that documentation for the general interface, below is a description of methods that differ.</p> <h2 id="clone">clone</h2> <p>Copy the internal state of the current object into a new object and return it.</p> <h2 id="reset">reset</h2> <p>Resets the object to the same internal state it was in when it was constructed.</p> <p>This works exactly like <a href="#new">"new"</a> except it doesn't allocate new memory for its internal state.</p> <h2 id="base64digest">base64digest</h2> <p>An legacy alias for the <b>b64digest</b> method which should be used instead.</p> <h2 id="hashsize">hashsize</h2> <p>Returns the size (in bits) of a WHIRLPOOL hash, i.e. 512.</p> <h1 id="SEE-ALSO"><a id="SEE"></a>SEE ALSO</h1> <ul> <li><p>NESSIE consortium, <i>Portfolio of recommended cryptographic primitives</i>, February 27, 2003.</p> </li> <li><p><a href="http://paginas.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html">http://paginas.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html</a></p> </li> </ul> <h1 id="AUTHORS-&-HISTORY"><a id="AUTHORS"></a><a id="AUTHORS-HISTORY"></a>AUTHORS & HISTORY</h1> <p>The original version of this package was written by Julius C. Duque in 2003. It was rewritten by Ævar Arnfjörð Bjarmason <avar@cpan.org> in January 2007 who added compatability with the Digest interface, improved documentation and a <a href="http://man.he.net/man1/whirlpoolsum">whirlpoolsum(1)</a> command-line utility amongst other things.</p> <h1 id="BUGS">BUGS</h1> <p>Please report any bugs that aren't already listed at <a href="http://rt.cpan.org/Dist/Display.html?Queue=Digest-Whirlpool">http://rt.cpan.org/Dist/Display.html?Queue=Digest-Whirlpool</a> to <a href="http://rt.cpan.org/Public/Bug/Report.html?Queue=Digest-Whirlpool">http://rt.cpan.org/Public/Bug/Report.html?Queue=Digest-Whirlpool</a></p> <h1 id="LICENSE">LICENSE</h1> <p>This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.</p> <p>Copyright 2003 Julius C. 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Digest::Whirlpool - A 512-bit, collision-resistant, one-way hash function - metacpan.org