mirror of
https://github.com/hashcat/hashcat.git
synced 2024-10-31 20:48:57 +00:00
69 lines
1.6 KiB
Perl
69 lines
1.6 KiB
Perl
#!/usr/bin/env perl
|
|
|
|
##
|
|
## Author......: See docs/credits.txt
|
|
## License.....: MIT
|
|
##
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
use Crypt::ScryptKDF qw (scrypt_raw);
|
|
use Digest::Keccak qw (keccak_256_hex);
|
|
|
|
sub module_constraints { [[0, 256], [32, 32], [-1, -1], [-1, -1], [-1, -1]] }
|
|
|
|
sub module_generate_hash
|
|
{
|
|
my $word = shift;
|
|
my $salt = shift;
|
|
my $scrypt_N = shift || 1024 ; # 262144 originally
|
|
my $scrypt_r = shift || 1; # 8 originally
|
|
my $scrypt_p = shift || 1;
|
|
my $ciphertext = shift || random_bytes (32);
|
|
|
|
my $derived_key = scrypt_raw ($word, $salt, $scrypt_N, $scrypt_r, $scrypt_p, 32);
|
|
|
|
my $derived_key_cropped = substr ($derived_key, 16, 16);
|
|
|
|
my $digest = keccak_256_hex ($derived_key_cropped . $ciphertext);
|
|
|
|
my $hash = sprintf ("\$ethereum\$s*%i*%i*%i*%s*%s*%s", $scrypt_N, $scrypt_r, $scrypt_p, unpack ("H*", $salt), unpack ("H*", $ciphertext), $digest);
|
|
|
|
return $hash;
|
|
}
|
|
|
|
sub module_verify_hash
|
|
{
|
|
my $line = shift;
|
|
|
|
my ($hash, $word) = split (':', $line);
|
|
|
|
return unless defined $hash;
|
|
return unless defined $word;
|
|
|
|
my $signature = substr ($hash, 0, 12);
|
|
|
|
return unless ($signature eq "\$ethereum\$s\*");
|
|
|
|
my @data = split ('\*', $hash);
|
|
|
|
return unless scalar (@data) == 7;
|
|
|
|
shift @data;
|
|
|
|
my $scrypt_N = shift @data;
|
|
my $scrypt_r = shift @data;
|
|
my $scrypt_p = shift @data;
|
|
my $salt = pack ("H*", shift @data);
|
|
my $ciphertext = pack ("H*", shift @data);
|
|
|
|
my $word_packed = pack_if_HEX_notation ($word);
|
|
|
|
my $new_hash = module_generate_hash ($word_packed, $salt, $scrypt_N, $scrypt_r, $scrypt_p, $ciphertext);
|
|
|
|
return ($new_hash, $word);
|
|
}
|
|
|
|
1;
|