diff --git a/tools/test_modules/m12150.pm b/tools/test_modules/m12150.pm
new file mode 100644
index 000000000..b1ae4bd24
--- /dev/null
+++ b/tools/test_modules/m12150.pm
@@ -0,0 +1,77 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use MIME::Base64 qw(encode_base64 decode_base64);
+use Digest::SHA qw(sha512);
+
+sub module_constraints {
+  return [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]];
+}
+
+sub module_generate_hash {
+  my $word       = shift;
+  my $salt       = shift;
+  my $iterations = shift // 1024;
+
+  if (length $salt == 0) {
+    $salt = random_bytes(16);
+  }
+
+  # Initialize the hash with the salt and password
+  my $ctx = Digest::SHA->new(512);
+  $ctx->add($salt);
+  $ctx->add($word);
+
+  my $digest = $ctx->digest;
+
+  # Perform the iterations
+  for (my $i = 1; $i < $iterations; $i++) {
+      $ctx = Digest::SHA->new(512);
+      $ctx->add($digest);
+      $digest = $ctx->digest;        
+  }
+
+  # Encode the final hash and salt
+  my $hash_encoded = encode_base64($digest, "");
+  my $salt_encoded = encode_base64($salt, "");
+
+  # Format the final hash
+  my $hash = sprintf('$shiro1$SHA-512$%i$%s$%s', $iterations, $salt_encoded, $hash_encoded);
+
+  return $hash;
+}
+
+sub module_verify_hash {
+  my $line = shift;
+
+  # Split the input line into components
+  my ($digest, $word) = split(/:/, $line, 2);
+
+  return unless defined $digest;
+  return unless defined $word;
+
+  # Match and capture the hash format components
+  if ($digest =~ /^\$shiro1\$SHA-512\$(\d+)\$([A-Za-z0-9+\/=]+)\$([A-Za-z0-9+\/=]+)$/) {
+    my ($iterations, $salt_encoded, $hash_encoded) = ($1, $2, $3);
+
+    # Decode base64 encoded salt
+    my $salt = decode_base64($salt_encoded);
+
+    # Verify the hash
+    my $word_packed = pack_if_HEX_notation($word);
+    my $new_hash = module_generate_hash($word_packed, $salt, $iterations);
+
+    return ($new_hash, $word);
+  }
+
+  return; # Return undefined if the digest doesn't match the expected format
+}
+
+1;