mirror of
https://github.com/hashcat/hashcat.git
synced 2024-11-29 11:28:15 +00:00
139 lines
2.9 KiB
Perl
139 lines
2.9 KiB
Perl
#!/usr/bin/env perl
|
|
|
|
##
|
|
## Author......: See docs/credits.txt
|
|
## License.....: MIT
|
|
##
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use Crypt::GCrypt;
|
|
use Crypt::PBKDF2;
|
|
use Digest::SHA qw (sha1 sha1_hex);
|
|
|
|
sub module_generate_hash
|
|
{
|
|
my $word = shift;
|
|
my $salt = shift // random_hex_string (2*16);
|
|
my $iter = shift // 100000;
|
|
my $iv = shift // random_hex_string (2*8);
|
|
my $plain = shift // random_hex_string (2*1024);
|
|
|
|
my $b_iv = pack ("H*", $iv);
|
|
my $b_salt = pack ("H*", $salt);
|
|
my $b_plain = pack ("H*", $plain);
|
|
|
|
my $kdf = Crypt::PBKDF2->new
|
|
(
|
|
hash_class => 'HMACSHA1',
|
|
iterations => $iter,
|
|
output_len => 16
|
|
);
|
|
|
|
my $pass_hash = sha1 ($word);
|
|
my $key = $kdf->PBKDF2 ($b_salt, $pass_hash);
|
|
|
|
my $cfb = Crypt::GCrypt->new(
|
|
type => 'cipher',
|
|
algorithm => 'blowfish',
|
|
mode => 'cfb'
|
|
);
|
|
|
|
$cfb->start ('encrypting');
|
|
$cfb->setkey ($key);
|
|
$cfb->setiv ($b_iv);
|
|
|
|
my $b_cipher = $cfb->encrypt ($b_plain);
|
|
|
|
$cfb->finish ();
|
|
|
|
my $cipher = unpack ("H*", $b_cipher);
|
|
my $checksum = sha1_hex ($b_plain);
|
|
|
|
my $hash = '$odf$'."*0*0*$iter*16*$checksum*8*$iv*16*$salt*0*$cipher";
|
|
|
|
return $hash;
|
|
}
|
|
|
|
sub module_verify_hash
|
|
{
|
|
my $line = shift;
|
|
|
|
my ($hash, $word) = split (':', $line);
|
|
|
|
return unless defined $hash;
|
|
return unless defined $word;
|
|
|
|
$word = pack_if_HEX_notation ($word);
|
|
|
|
# tokenize
|
|
my @data = split ('\*', $hash);
|
|
|
|
next unless scalar @data == 12;
|
|
|
|
my $signature = shift @data;
|
|
my $cipher_type = shift @data;
|
|
my $cs_type = shift @data;
|
|
my $iter = shift @data;
|
|
my $cs_len = shift @data;
|
|
my $cs = shift @data;
|
|
my $iv_len = shift @data;
|
|
my $iv = shift @data;
|
|
my $salt_len = shift @data;
|
|
my $salt = shift @data;
|
|
my $unused = shift @data;
|
|
my $cipher = shift @data;
|
|
|
|
# validate
|
|
return unless $signature eq '$odf$';
|
|
return unless $cipher_type eq '0';
|
|
return unless $cs_type eq '0';
|
|
return unless $cs_len eq '16';
|
|
return unless $iv_len eq '8';
|
|
return unless $salt_len eq '16';
|
|
return unless $unused eq '0';
|
|
return unless defined $cipher;
|
|
|
|
# decrypt
|
|
my $b_iv = pack ("H*", $iv);
|
|
my $b_salt = pack ("H*", $salt);
|
|
my $b_cipher = pack ("H*", $cipher);
|
|
|
|
my $kdf = Crypt::PBKDF2->new
|
|
(
|
|
hash_class => 'HMACSHA1',
|
|
iterations => $iter,
|
|
output_len => 16
|
|
);
|
|
|
|
my $pass_hash = sha1 ($word);
|
|
my $key = $kdf->PBKDF2 ($b_salt, $pass_hash);
|
|
|
|
my $cfb = Crypt::GCrypt->new(
|
|
type => 'cipher',
|
|
algorithm => 'blowfish',
|
|
mode => 'cfb'
|
|
);
|
|
|
|
$cfb->start ('decrypting');
|
|
$cfb->setkey ($key);
|
|
$cfb->setiv ($b_iv);
|
|
|
|
my $b_plain = $cfb->decrypt ($b_cipher);
|
|
|
|
$cfb->finish ();
|
|
|
|
my $plain = unpack ("H*", $b_plain);
|
|
|
|
my $new_hash = module_generate_hash ($word, $salt, $iter, $iv, $plain);
|
|
|
|
return unless defined $new_hash;
|
|
|
|
return unless $new_hash eq $hash;
|
|
|
|
return $new_hash;
|
|
}
|
|
|
|
1;
|