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hashcat/tools/test_modules/m10600.pm

86 lines
1.9 KiB
Perl

#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::SHA qw (sha256);
sub module_constraints { [[0, 127], [32, 32], [0, 31], [32, 32], [-1, -1]] }
sub module_generate_hash
{
my $word = shift;
my $id = shift;
my $rest = shift;
if (defined $id == 0)
{
$id = "0" x 32;
}
if (defined $rest == 0)
{
$rest = "127*";
$rest .= "0" x 64;
$rest .= $id;
$rest .= "0" x 158;
$rest .= "*127*00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000*32*0000000000000000000000000000000000000000000000000000000000000000*32*0000000000000000000000000000000000000000000000000000000000000000";
}
my @data = split /\*/, $rest;
my $u = pack ("H*", $data[1]);
my $h = sha256 ($word . substr ($u, 32, 8));
$data[1] = unpack ("H*", $h . substr ($u, 32));
$rest = join ("*", @data);
my $hash = sprintf ('$pdf$5*5*256*-1028*1*16*%s*%s', $id, $rest);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
# PDF 1.7 Level 3 (Acrobat 9)
my ($hash_in, $word) = split ":", $line;
return unless defined $hash_in;
return unless defined $word;
my @data = split /\*/, $hash_in;
return unless scalar @data >= 11;
return unless (shift @data eq '$pdf$5');
return unless (shift @data eq '5');
return unless (shift @data eq '256');
return unless (shift @data eq '-1028');
return unless (shift @data eq '1');
return unless (shift @data eq '16');
my $id = shift @data;
my $rest = join "*", @data;
return unless defined $id;
return unless defined $rest;
return unless defined $word;
$word = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word, $id, $rest);
return ($new_hash, $word);
}
1;