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hashcat/tools/test_modules/m22400.pm

90 lines
1.7 KiB
Perl

#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::SHA qw (sha256);
use Digest::HMAC qw (hmac_hex);
use Encode;
sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
my $iv_aes = shift // random_bytes (16);
my $key_aes = shift // random_bytes (32);
my $word_utf16le = encode ('UTF-16le', $word);
my $key = $salt . "\x00" x 16;
for (my $i = 0; $i < 8192; $i++)
{
$key = sha256 ($key . $word_utf16le);
}
my $digest = hmac_hex ($iv_aes . $key_aes, $key, \&sha256, 64);
# hex conversion:
my $salt_hex = unpack ("H*", $salt);
my $iv_hex = unpack ("H*", $iv_aes);
my $key_hex = unpack ("H*", $key_aes);
my $hash = sprintf ("\$aescrypt\$1*%s*%s*%s*%s", $salt_hex, $iv_hex, $key_hex, $digest);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($hash, $word) = split (':', $line);
return unless defined $hash;
return unless defined $word;
my @data = split ('\*', $hash);
return unless (scalar (@data) == 5);
my $signature = substr ($data[0], 0, 10);
return unless ($signature eq "\$aescrypt\$");
my $version = substr ($data[0], 10);
return unless ($version eq "1");
my $salt = $data[1];
my $iv = $data[2];
my $key = $data[3];
return unless (length ($salt) == 32); # hex lengths
return unless (length ($iv) == 32);
return unless (length ($key) == 64);
# binary conversion:
$salt = pack ("H*", $salt);
$iv = pack ("H*", $iv);
$key = pack ("H*", $key);
my $word_packed = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word_packed, $salt, $iv, $key);
return ($new_hash, $word);
}
1;