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hashcat/tools/test_modules/m04800.pm
2020-06-13 11:19:00 +02:00

83 lines
1.4 KiB
Perl

#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::MD5 qw (md5_hex);
sub module_constraints { [[0, 256], [-1, -1], [0, 38], [-1, -1], [-1, -1]] } # 38 = 55 - 16 - 1
sub get_random_md5chap_salt
{
my $salt_buf = random_bytes (16);
my $salt = unpack ("H*", $salt_buf);
$salt .= ":";
$salt .= unpack ("H*", random_bytes (1));
return $salt;
}
sub module_generate_hash
{
my $word = shift;
my $salt = shift;
if (length $salt == 0)
{
$salt = get_random_md5chap_salt ();
}
my $index = rindex ($salt, ":");
my $saltx = substr ($salt, 0, $index);
my $salt_bin = pack ("H*", $saltx);
my $chap_sign = substr ($salt, $index + 1);
my $chap_sign_bin = pack ("H*", $chap_sign);
my $hash_buf = md5_hex ($chap_sign_bin . $word . $salt_bin);
my $hash = sprintf ("%s:%s", $hash_buf, $salt);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my $index1 = index ($line, ":");
return if $index1 < 1;
my $index2 = index ($line, ":", $index1 + 1);
return if $index2 < 1;
my $index3 = index ($line, ":", $index2 + 1);
return if $index3 < 1;
my $salt = substr ($line, $index1 + 1, $index3 - $index1 - 1);
my $word = substr ($line, $index3 + 1);
return unless defined $salt;
return unless defined $word;
$word = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word, $salt);
return ($new_hash, $word);
}
1;