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51 lines
857 B
Perl
51 lines
857 B
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::SHA qw (sha1_hex);
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sub module_constraints { [[0, 253], [8, 8], [0, 53], [8, 8], [8, 53]] }
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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 $signature = "01";
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my $salt_bin = pack ("H*", $salt . $signature);
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my $digest = sha1_hex ($salt_bin . $word);
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my $hash = sprintf ("%s%s%s", $salt, $signature, $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 $line = shift;
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my ($hash, $word) = split (':', $line);
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my $salt = substr ($hash, 0, 8);
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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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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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