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66 lines
1.0 KiB
66 lines
1.0 KiB
#!/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::MD5 qw (md5_hex);
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sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
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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 $iter = shift // 1000;
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my $data;
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$data .= $salt;
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$data .= $word x $iter;
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$data .= $word;
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my $digest = md5_hex ($data);
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my $hash;
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if ($iter == 1000)
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{
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$hash = sprintf ("\@m\@%s\@%s", $digest, $salt);
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}
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else
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{
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$hash = sprintf ("\@m,%u\@%s\@%s", $iter, $digest, $salt);
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}
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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 $line = shift;
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my ($hash, $word) = split (':', $line);
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return unless defined $hash;
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return unless defined $word;
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my (undef, $tag, $digest, $salt) = split (/\@/, $hash);
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my ($type, $iter) = split (/\,/, $tag);
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return unless ($type eq "m");
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, $salt, $iter);
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return ($new_hash, $word);
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}
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1;
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