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hashcat/tools/test_modules/m08200.pm

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Perl
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2019-02-17 15:24:33 +01:00
#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Crypt::PBKDF2;
use Digest::HMAC qw (hmac_hex);
use Digest::SHA qw (sha256);
sub module_constraints { [[0, 255], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
sub get_random_cloudkeychain_salt
{
my $salt_buf = random_bytes (16 + 304);
my $ret = unpack ("H*", $salt_buf);
return $ret;
}
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $iter = shift // 40000;
if (length $salt == 0)
{
$salt = get_random_cloudkeychain_salt ();
}
my $salt_hex = substr ($salt, 0, 32);
my $salt_bin = pack ("H*", $salt_hex);
my $data_hex = substr ($salt, 32);
my $data_bin = pack ("H*", $data_hex);
my $pbkdf2 = Crypt::PBKDF2->new
(
hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 512),
iterations => $iter
);
my $key = $pbkdf2->PBKDF2 ($salt_bin, $word);
my $hash_buf = hmac_hex ($data_bin, substr ($key, 32, 32), \&sha256, 64);
my $hash = sprintf ("%s:%s:%d:%s", $hash_buf, $salt_hex, $iter, $data_hex);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my @datas = split (":", $line);
return if scalar @datas < 4;
my $hash = shift @datas;
my $salt = shift @datas;
my $iter = shift @datas;
my $data = shift @datas;
$salt .= $data;
my $word = join (":", @datas);
return unless defined $salt;
return unless defined $word;
$word = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word, $salt, $iter);
return ($new_hash, $word);
}
1;