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hashcat/tools/test_modules/m28506.pm

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#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Bitcoin::Crypto qw (btc_prv btc_extprv);
use Bitcoin::Crypto::Base58 qw (decode_base58check);
sub module_constraints { [[51, 51], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
# Note:
# We expect valid WIF format which for BTC private address is 51/52 base58 characters long.
# For uncompressed P2SH(P2WPKH) the length of the WIF is always 51.
# Standard test.pl is generating random passwords consisting only from digits.
# That does not work for this mode.
# So we have introduced new function: module_get_random_password ()
# that will help to generate random valid password for the module from a given seed.
#
# It will be called from test.pl if it exists in the module, otherwise everything
# will work as in legacy code. Search test.pl for module_get_random_password ()
sub module_generate_hash
{
my $word = shift; # expecting valid WIF formated private key
my @is_valid_base58 = eval
{
decode_base58check ($word); # or we could use validate_wif ()
};
return if (! @is_valid_base58);
# validate WIF (check password, "verify")
my $priv = "";
my @is_valid_wif = eval
{
$priv = btc_prv->from_wif ($word);
};
return if (! @is_valid_wif);
return if ($priv->compressed != 0);
my $pub = $priv->get_public_key ();
my $hash = $pub->get_compat_address ();
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, $idx + 1);
return unless (defined ($hash));
return unless (defined ($word));
my @is_valid_base58 = eval
{
decode_base58check ($hash);
decode_base58check ($word);
};
return unless (@is_valid_base58);
return unless (length ($word) == 51);
return unless (substr ($word, 0, 1) eq "5");
my $new_hash = module_generate_hash ($word);
return ($new_hash, $word);
}
sub module_get_random_password
{
# new function added to generate valid password for an algorithm
# from a given seed as a parameter
my $seed = shift;
my $master_key = btc_extprv->from_seed ($seed); # expecting random seed from test.pl
my $derived_key = $master_key->derive_key ("m/0'");
my $priv = $derived_key->get_basic_key ();
my $IS_COMPRESSED = 0;
$priv->set_compressed ($IS_COMPRESSED);
# return WIF format
return $priv->to_wif ();
}
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