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52 lines
828 B
52 lines
828 B
#!/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, 256], [8, 8], [0, 54], [8, 8], [8, 54]] }
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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 $hash_buf = sha1_hex ($salt . $word . "\x00");
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my $hash = sprintf ("1%s%s", $salt, $hash_buf);
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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 $salt = substr ($line, 1, 8);
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my $rest = substr ($line, 1 + 8);
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my $index2 = index ($rest, ":");
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return if $index2 < 1;
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my $word = substr ($rest, $index2 + 1);
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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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