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#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::SHA qw (sha512_hex);
use Encode;
sub module_constraints { [[0, 256], [0, 256], [0, 27], [0, 27], [0, 27]] }
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $digest = sha512_hex (encode ("UTF-16LE", $word) . $salt);
my $hash = sprintf ("%s:%s", $digest, $salt);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($hash, $salt, $word) = split (':', $line);
return unless defined $hash;
return unless defined $salt;
return unless defined $word;
my $word_packed = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word_packed, $salt);
return ($new_hash, $word);
}
1;
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