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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 <firstname.lastname@example.org> 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.