mirror of
https://github.com/hashcat/hashcat.git
synced 2024-11-14 03:39:09 +00:00
79 lines
1.7 KiB
Perl
79 lines
1.7 KiB
Perl
#!/usr/bin/env perl
|
|
|
|
##
|
|
## Author......: See docs/credits.txt
|
|
## License.....: MIT
|
|
##
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use MIME::Base64 qw (decode_base64 encode_base64);
|
|
use Digest::SHA qw (sha256);
|
|
use Digest::HMAC qw (hmac);
|
|
use Crypt::PBKDF2;
|
|
|
|
sub module_constraints { [[0, 256], [28, 28], [-1, -1], [-1, -1], [-1, -1]] }
|
|
|
|
my $ITERATIONS = 4096;
|
|
my $HMAC_SALT = "Server Key";
|
|
my $HMAC_SALT_2 = "Client Key";
|
|
|
|
sub module_generate_hash
|
|
{
|
|
my $word = shift;
|
|
my $salt = shift;
|
|
my $iter = shift // $ITERATIONS;
|
|
|
|
my $pbkdf = Crypt::PBKDF2->new
|
|
(
|
|
hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 256),
|
|
iterations => $iter,
|
|
output_len => 32
|
|
);
|
|
|
|
my $pbkdf2_dgst = $pbkdf->PBKDF2 ($salt, $word);
|
|
|
|
my $server_key = hmac ($HMAC_SALT, $pbkdf2_dgst, \&sha256);
|
|
my $stored_key = sha256 (hmac ($HMAC_SALT_2, $pbkdf2_dgst, \&sha256));
|
|
|
|
my $hash = sprintf ('SCRAM-SHA-256$%i:%s$%s:%s', $iter, encode_base64 ($salt, ""), encode_base64 ($stored_key, ""), encode_base64 ($server_key, ""));
|
|
|
|
return $hash;
|
|
}
|
|
|
|
sub module_verify_hash
|
|
{
|
|
my $line = shift;
|
|
|
|
my $idx = rindex ($line, ':');
|
|
|
|
return unless $idx >= 0;
|
|
|
|
my $hash = substr ($line, 0, $idx);
|
|
my $word = substr ($line, $idx + 1);
|
|
|
|
return unless substr ($hash, 0, 13) eq 'SCRAM-SHA-256';
|
|
|
|
my (undef, $iter, $salt) = split (':|\$', $hash);
|
|
|
|
return unless defined ($iter);
|
|
return unless defined ($salt);
|
|
|
|
return unless ($iter =~ m/^[1-9][0-9]{0,7}$/);
|
|
|
|
$iter = int ($iter);
|
|
|
|
return unless ($salt =~ m/^[A-Za-z0-9+\/=]{0,88}$/);
|
|
|
|
$salt = decode_base64 ($salt);
|
|
|
|
my $word_packed = pack_if_HEX_notation ($word);
|
|
|
|
my $new_hash = module_generate_hash ($word_packed, $salt, $iter);
|
|
|
|
return ($new_hash, $word);
|
|
}
|
|
|
|
1;
|