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72 lines
1.2 KiB
Perl
72 lines
1.2 KiB
Perl
#!/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;
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sub module_constraints { [[0, 256], [-1, -1], [-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 $md5 = Digest::MD5->new;
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$md5->add ($word);
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for (my $i = 1; $i < 100000; $i++)
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{
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my $tmp = $md5->digest;
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$md5->reset;
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$md5->add ($tmp);
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}
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my $digest = $md5->digest;
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my $hash = sprintf ('$sspr$0$100000$NONE$%s', unpack ("H*", $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 $idx = index ($line, ':');
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return unless $idx >= 0;
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my $hash = substr ($line, 0, $idx);
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my $word = substr ($line, $idx + 1);
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return unless substr ($hash, 0, 20) eq '$sspr$0$100000$NONE$';
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my (undef, $signature, $version, $iter, $salt) = split '\$', $hash;
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return unless defined $signature;
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return unless defined $version;
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return unless defined $iter;
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return unless defined $salt;
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return unless $version == 0;
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return unless $iter == 100000;
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return unless $salt eq "NONE";
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, $salt);
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return ($new_hash, $word);
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}
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1;
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