2019-01-08 22:00:23 +00:00
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#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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use Digest::SHA1 qw (sha1_hex);
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use Encode;
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sub module_constraints { [[0, 255], [8, 8], [0, 27], [8, 8], [8, 27]] }
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sub module_generate_hash
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{
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my $word = shift;
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my $salt = shift;
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my $salt_bin = pack ("H*", $salt);
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my $digest = sha1_hex (encode ("UTF-16LE", $word) . $salt_bin);
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my $hash = sprintf ("0x0100%s%s", $salt, $digest);
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return $hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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my ($digest, $word) = split (':', $line);
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2019-01-09 09:50:26 +00:00
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my $salt = substr ($digest, 6, 8);
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2019-01-08 22:00:23 +00:00
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2019-01-09 09:50:26 +00:00
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my $hash = substr ($digest, 14);
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2019-01-08 22:00:23 +00:00
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return unless defined $hash;
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return unless defined $salt;
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return unless defined $word;
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$word = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word, $salt);
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return ($new_hash, $word);
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}
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1;
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