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49 lines
875 B
49 lines
875 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 (sha256_hex);
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sub module_constraints { [[0, 256], [16, 16], [0, 55], [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 $digest = sha256_hex (sha256_hex ($word) . $salt);
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my $hash = sprintf ("\$SHA\$%s\$%s", $salt, $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 $line = shift;
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my ($digest, $word) = split (':', $line);
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return unless defined $digest;
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return unless defined $word;
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my (undef, $signature, $salt, $hash) = split ('\$', $digest);
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return unless ($signature eq 'SHA');
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return unless length ($salt) == 16;
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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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