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hashcat/tools/test_modules/m06800.pm
Lars Sætaberget f40dc401bc Add IV support to lastpass (-m 6800)
If you are from the past and need the old functionality, just use zeroes for the IV.

For instance, the old example hash would then become:
82dbb8ccc9c7ead8c38a92a6b5740f94:500:pmix@trash-mail.com:00000000000000000000000000000000
2022-10-21 14:37:24 +02:00

74 lines
1.4 KiB
Perl

#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Crypt::CBC;
use Crypt::PBKDF2;
# we need to make sure the salts are unique, otherwise this module will fail
sub module_constraints { [[0, 256], [10, 15], [-1, -1], [-1, -1], [-1, -1]] }
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $iter = shift // 100100;
my $iv = random_bytes(16);
my $hasher = Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 256);
my $pbkdf2 = Crypt::PBKDF2->new (
hasher => $hasher,
iterations => $iter,
output_len => 32
);
my $key = $pbkdf2->PBKDF2 ($salt, $word);
my $cipher = Crypt::CBC->new ({
key => $key,
cipher => "Crypt::Rijndael",
iv => $iv,
literal_key => 1,
header => "none",
keysize => 32
});
my $encrypt = $cipher->encrypt (substr ($salt, 0, 16));
my $hash_buf = substr (unpack ("H*", $encrypt), 0, 32);
my $iv_buf = unpack("H*", $iv);
my $hash = sprintf ("%s:%i:%s:%s", $hash_buf, $iter, $salt, $iv_buf);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($hash, $iter, $salt, $word) = split ":", $line;
return unless defined $hash;
return unless defined $iter;
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;