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package Crypt::PBKDF2::Hash::HMACSHA3;
# ABSTRACT: HMAC-SHA3 support for Crypt::PBKDF2 using Digest::SHA
our $VERSION = '0.142390'; # VERSION
our $AUTHORITY = 'cpan:ARODLAND'; # AUTHORITY
use Moose 1;
use Moose::Util::TypeConstraints;
use namespace::autoclean;
use Digest::HMAC 1.01 ();
use Digest::SHA3 0.22 ();
with 'Crypt::PBKDF2::Hash';
subtype 'SHASize' => (
as 'Int',
where { $_ == 224 or $_ == 256 or $_ == 384 or $_ == 512 },
message { "$_ is an invalid number of bits for SHA-3" }
);
has 'sha_size' => (
is => 'ro',
isa => 'SHASize',
default => 256,
);
has '_hasher' => (
is => 'ro',
lazy_build => 1,
init_arg => undef,
);
sub _build__hasher {
my $self = shift;
my $shasize = $self->sha_size;
return Digest::SHA3->can("sha3_$shasize");
}
sub hash_len {
my $self = shift;
return $self->sha_size() / 8;
}
sub generate {
my ($self, $data, $key) = @_;
return Digest::HMAC::hmac($data, $key, $self->_hasher);
}
sub to_algo_string {
my $self = shift;
return $self->sha_size;
}
sub from_algo_string {
my ($class, $str) = @_;
return $class->new( sha_size => $str );
}
__PACKAGE__->meta->make_immutable;
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Crypt::PBKDF2::Hash::HMACSHA3 - HMAC-SHA3 support for Crypt::PBKDF2 using Digest::SHA
=head1 VERSION
version 0.142390
=head1 DESCRIPTION
Uses L<Digest::HMAC> and L<Digest::SHA3> C<sha3_256>/C<sha3_384>/C<sha3_512>
to provide the HMAC-ShA3 family of hashes for L<Crypt::PBKDF2>.
This could be done with L<Crypt::PBKDF2::Hash::DigestHMAC> instead, but it
seemed nice to have a uniform interface to HMACSHA*.
=head1 AUTHOR
Andrew Rodland <arodland@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Andrew Rodland.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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