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mirror of https://github.com/hashcat/hashcat synced 2024-12-05 11:15:21 +01:00
hashcat/tools/test_modules/m16900.pm
2019-02-15 12:13:55 +01:00

78 lines
1.6 KiB
Perl

#!/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], [0, 255], [-1, -1], [-1, -1]] }
sub module_generate_hash
{
my $word = shift;
my $salt_hex = shift;
my $ciphertext_hex = shift // random_hex_string (64);
if (length $salt_hex == 0)
{
$salt_hex = random_hex_string (64);
}
my $salt_bin = pack ("H*", $salt_hex);
my $ciphertext_bin = pack ("H*", $ciphertext_hex);
# actually 80 but the last 16 bytes are the IV which we don't need
my $out_len = 64;
my $pbkdf2 = Crypt::PBKDF2->new
(
hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 256),
iterations => 10000,
output_len => $out_len
);
my $derived_key = $pbkdf2->PBKDF2 ($salt_bin, $word);
my $hash_buf = hmac_hex ($ciphertext_bin, substr ($derived_key, 32, 32), \&sha256);
my $hash = sprintf ('$ansible$0*0*%s*%s*%s', unpack ("H*", $salt_bin), unpack ("H*", $ciphertext_bin), $hash_buf);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($digest, $word) = split (':', $line);
next unless defined $digest;
next unless defined $word;
my @data = split ('\*', $digest);
return unless scalar @data == 5;
my ($signature_tmp, $cipher, $salt, $ciphertext, $hmac) = @data;
my (undef, $signature, undef) = split ('\$', $signature_tmp);
return unless ($signature eq "ansible");
$word = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word, $salt, $ciphertext);
return ($new_hash, $word);
}
1;