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64 lines
1.2 KiB
Perl
64 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::SHA qw (sha256);
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use MIME::Base64 qw (encode_base64 decode_base64);
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sub module_constraints { [[0, 256], [24, 24], [-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 $FORTIGATE_SIGNATURE = "SH2";
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my $FORTIGATE_MAGIC = pack ("H*", "a388ba2e424cb04a537930c13107cc3fa1329029a9815b70");
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my $salt_bin = pack ("H*", $salt);
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my $hash_buf = sha256 ($salt_bin . $word . $FORTIGATE_MAGIC);
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$hash_buf = encode_base64 ($salt_bin . $hash_buf, "");
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my $hash = sprintf ("%s%s", $FORTIGATE_SIGNATURE, $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 $index1 = index ($line, ":");
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return if $index1 != 63;
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my $hash_in = substr ($line, 0, $index1);
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my $word = substr ($line, $index1 + 1);
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my $decoded = decode_base64 (substr ($hash_in, 3));
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my $salt = substr ($decoded, 0, 12);
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$salt = unpack ("H*", $salt);
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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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