diff --git a/tools/test_modules/m07400.pm b/tools/test_modules/m07400.pm
new file mode 100644
index 000000000..7c39a74b3
--- /dev/null
+++ b/tools/test_modules/m07400.pm
@@ -0,0 +1,252 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::SHA qw (sha256);
+
+sub module_constraints { [[0, 255], [0, 16], [0, 15], [0, 16], [-1, -1]] }
+
+sub to64
+{
+  my $v = shift;
+  my $n = shift;
+
+  my $itoa64 = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+  my $ret = "";
+
+  while (($n - 1) >= 0)
+  {
+    $n = $n - 1;
+
+    $ret .= substr ($itoa64, $v & 0x3f, 1);
+
+    $v = $v >> 6;
+  }
+
+  return $ret
+}
+
+sub sha256_crypt
+{
+  my $iter = shift;
+  my $pass = shift;
+  my $salt = shift;
+
+  my $hash = ""; # hash to be returned by this function
+
+  my $final = sha256 ($pass . $salt . $pass);
+
+  $salt = substr ($salt, 0, 16);
+
+  my $tmp = $pass . $salt;
+
+  my $pass_len = length ($pass);
+  my $salt_len = length ($salt);
+
+  my $i;
+
+  for ($i = $pass_len; $i > 0; $i -= 16)
+  {
+    my $len = 16;
+
+    if ($i < $len)
+    {
+      $len = $i;
+    }
+
+    $tmp .= substr ($final, 0, $len);
+  }
+
+  $i = $pass_len;
+
+  while ($i > 0)
+  {
+    if ($i & 1)
+    {
+      $tmp .= $final;
+    }
+    else
+    {
+      $tmp .= $pass;
+    }
+
+    $i >>= 1;
+  }
+
+  $final = sha256 ($tmp);
+
+  # p_bytes
+
+  my $p_bytes = "";
+
+  for ($i = 0; $i < $pass_len; $i++)
+  {
+    $p_bytes .= $pass;
+  }
+
+  $p_bytes = sha256 ($p_bytes);
+  $p_bytes = substr ($p_bytes, 0, $pass_len);
+
+  # s_bytes
+
+  my $final_first_byte = ord (substr ($final, 0, 1));
+
+  my $s_bytes = "";
+
+  for ($i = 0; $i < (16 + $final_first_byte); $i++)
+  {
+    $s_bytes .= $salt;
+  }
+
+  $s_bytes = sha256 ($s_bytes);
+  $s_bytes = substr ($s_bytes, 0, $salt_len);
+
+  for ($i = 0; $i < $iter; $i++)
+  {
+    $tmp = "";
+
+    if ($i & 1)
+    {
+      $tmp .= $p_bytes;
+    }
+    else
+    {
+      $tmp .= $final;
+    }
+
+    if ($i % 3)
+    {
+      $tmp .= $s_bytes;
+    }
+
+    if ($i % 7)
+    {
+      $tmp .= $p_bytes;
+    }
+
+    if ($i & 1)
+    {
+      $tmp .= $final;
+    }
+    else
+    {
+      $tmp .= $p_bytes;
+    }
+
+    $final = sha256 ($tmp);
+  }
+
+  # done
+  # now format the output string ("hash")
+
+  my $hash_buf;
+
+  $hash .= to64 ((ord (substr ($final,  0, 1)) << 16) | (ord (substr ($final, 10, 1)) << 8) | (ord (substr ($final, 20, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 21, 1)) << 16) | (ord (substr ($final,  1, 1)) << 8) | (ord (substr ($final, 11, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 12, 1)) << 16) | (ord (substr ($final, 22, 1)) << 8) | (ord (substr ($final,  2, 1))), 4);
+  $hash .= to64 ((ord (substr ($final,  3, 1)) << 16) | (ord (substr ($final, 13, 1)) << 8) | (ord (substr ($final, 23, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 24, 1)) << 16) | (ord (substr ($final,  4, 1)) << 8) | (ord (substr ($final, 14, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 15, 1)) << 16) | (ord (substr ($final, 25, 1)) << 8) | (ord (substr ($final,  5, 1))), 4);
+  $hash .= to64 ((ord (substr ($final,  6, 1)) << 16) | (ord (substr ($final, 16, 1)) << 8) | (ord (substr ($final, 26, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 27, 1)) << 16) | (ord (substr ($final,  7, 1)) << 8) | (ord (substr ($final, 17, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 18, 1)) << 16) | (ord (substr ($final, 28, 1)) << 8) | (ord (substr ($final,  8, 1))), 4);
+  $hash .= to64 ((ord (substr ($final,  9, 1)) << 16) | (ord (substr ($final, 19, 1)) << 8) | (ord (substr ($final, 29, 1))), 4);
+  $hash .= to64 ((ord (substr ($final, 31, 1)) <<  8) | (ord (substr ($final, 30, 1))), 3);
+
+  my $magic = '$5$';
+
+  if ($iter == 5000) # default
+  {
+    $hash_buf = sprintf ("%s%s\$%s", $magic, $salt , $hash);
+  }
+  else
+  {
+    $hash_buf = sprintf ("%srounds=%i\$%s\$%s", $magic, $iter, $salt , $hash);
+  }
+
+  return $hash_buf;
+}
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+  my $iter = shift // 5000;
+
+  my $hash_buf = sha256_crypt ($iter, $word, $salt);
+
+  my $hash = sprintf ("%s", $hash_buf);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my $index1 = index ($line, ":", 30);
+
+  return if $index1 < 1;
+
+  my $hash_in = substr ($line, 0, $index1);
+
+  my $word = substr ($line, $index1 + 1);
+
+  $index1 = index ($hash_in,  ",", 1);
+
+  my $index2 = index ($hash_in, "\$", 1);
+
+  if ($index1 != -1)
+  {
+    if ($index1 < $index2)
+    {
+      $index2 = $index1;
+    }
+  }
+
+  #$param = substr ($hash_in, $index2, 1);
+
+  $index2++;
+
+  # rounds= if available
+  my $iter;
+
+  if (substr ($hash_in, $index2, 7) eq "rounds=")
+  {
+    my $old_index = $index2;
+
+    $index2 = index ($hash_in, "\$", $index2 + 1);
+
+    return if $index2 < 1;
+
+    $iter = substr ($hash_in, $old_index + 7, $index2 - $old_index - 7);
+
+    $index2++;
+  }
+
+  # get salt
+  my $index3 = rindex ($hash_in, "\$");
+
+  return if $index3 < 1;
+
+  my $salt = substr ($hash_in, $index2, $index3 - $index2);
+
+  return unless defined $salt;
+  return unless defined $word;
+
+  $word = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word, $salt, $iter);
+
+  return ($new_hash, $word);
+}
+
+1;
+