From f1c19eaecadd2a4b8d0273e1e86fce5eff6bd680 Mon Sep 17 00:00:00 2001
From: philsmd <philsmd@hashcat.net>
Date: Sat, 11 Jun 2022 11:15:03 +0200
Subject: [PATCH] add tests for -m 27800 = MurmurHash 3

---
 tools/install_modules.sh     |  1 +
 tools/test.sh                |  2 +-
 tools/test_modules/m27800.pm | 51 ++++++++++++++++++++++++++++++++++++
 3 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 tools/test_modules/m27800.pm

diff --git a/tools/install_modules.sh b/tools/install_modules.sh
index c94a2bb6f..3b7b46222 100755
--- a/tools/install_modules.sh
+++ b/tools/install_modules.sh
@@ -48,6 +48,7 @@ cpan install Authen::Passphrase::LANManager \
              Digest::Keccak                 \
              Digest::MD4                    \
              Digest::MD5                    \
+             Digest::MurmurHash3            \
              Digest::Perl::MD5              \
              Digest::SHA                    \
              Digest::SHA1                   \
diff --git a/tools/test.sh b/tools/test.sh
index 733c64a66..2b16d340e 100755
--- a/tools/test.sh
+++ b/tools/test.sh
@@ -19,7 +19,7 @@ TC_MODES="6211 6212 6213 6221 6222 6223 6231 6232 6233 6241 6242 6243 29311 2931
 VC_MODES="13711 13712 13713 13721 13722 13723 13731 13732 13733 13741 13742 13743 13751 13752 13753 13761 13762 13763 13771 13772 13773 13781 13782 13783"
 
 # List of modes which either are OPTS_TYPE_PT_NEVERCRACK or produce collisions
-NEVER_CRACK="9720 9820 14900 18100"
+NEVER_CRACK="9720 9820 14900 18100 27800"
 
 # List of modes which return a different output hash format than the input hash format
 NOCHECK_ENCODING="16800 22000"
diff --git a/tools/test_modules/m27800.pm b/tools/test_modules/m27800.pm
new file mode 100644
index 000000000..1a9b55d8b
--- /dev/null
+++ b/tools/test_modules/m27800.pm
@@ -0,0 +1,51 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::MurmurHash3 qw (murmur32);
+
+sub module_constraints { [[-1, -1], [-1, -1], [0, 31], [8, 8], [-1, -1]] }
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+
+  my $seed = unpack ("I>", pack ("H*", $salt));
+
+  my $digest = murmur32 ($word, $seed);
+
+  $digest = unpack ("H*", pack ("I>", $digest));
+
+  my $hash = sprintf ("%s:%s", $digest, $salt);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my ($hash, $seed, $word) = split (':', $line);
+
+  return unless defined $hash;
+  return unless defined $seed;
+  return unless defined $word;
+
+  return unless ($hash =~ m/^[0-9a-fA-F]{8}$/);
+  return unless ($seed =~ m/^[0-9a-fA-F]{8}$/);
+
+  my $word_packed = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word_packed, $seed);
+
+  return ($new_hash, $word);
+}
+
+1;