diff --git a/tools/test_modules/m04010.pm b/tools/test_modules/m04010.pm
new file mode 100644
index 000000000..b4cb00f5f
--- /dev/null
+++ b/tools/test_modules/m04010.pm
@@ -0,0 +1,44 @@
+#!/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, 255], [0, 255], [0, 55], [0, 23], [0, 55]] }
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+
+  my $digest = md5_hex ($salt . md5_hex ($salt . $word));
+
+  my $hash = sprintf ("%s:%s", $digest, $salt);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my ($hash, $salt, $word) = split (':', $line);
+
+  return unless defined $hash;
+  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;
diff --git a/tools/test_modules/m04110.pm b/tools/test_modules/m04110.pm
new file mode 100644
index 000000000..97cc39715
--- /dev/null
+++ b/tools/test_modules/m04110.pm
@@ -0,0 +1,44 @@
+#!/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, 255], [0, 255], [0, 55], [0, 23], [0, 55]] }
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+
+  my $digest = md5_hex ($salt . md5_hex ($word . $salt));
+
+  my $hash = sprintf ("%s:%s", $digest, $salt);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my ($hash, $salt, $word) = split (':', $line);
+
+  return unless defined $hash;
+  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;