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58 lines
1000 B
Perl
58 lines
1000 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 (sha256_hex);
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use Encode;
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sub module_constraints { [[-1, -1], [-1, -1], [0, 27], [16, 16], [-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 $salt_bin = pack ("H*", $salt);
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my $word_utf = encode ("UTF-16BE", $word);
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my $hash_buf = sha256_hex ($word_utf . "\x00" x (510 - (length ($word) * 2)) . $salt_bin);
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my $hash = sprintf ("0xc007%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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# Sybase ASE
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my $index = index ($line, ":");
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return if $index < 1;
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my $hash_in = substr ($line, 0, $index);
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my $word = substr ($line, $index + 1);
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my $salt = substr ($hash_in, 6, 16);
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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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