#  DO NOT VIEW WITH WORD WRAP ON!!!
#  This is an example security check file.  The encryption is as follows:
#  1) The score is doubled
#  2) That is squared
#  3) 13 is added to that
#  There are really two ways to do this: redo the sequence on the score and then compare
#  or undo the sequence on the security check and then compare.  I will do both.  You
#  should NOT include two methods in your security check.

#  Redoing sequence on score
$new_score = $scored*2;  #  Double score
$new_score = $new_score * $new_score;  #  Square that
$new_score = $new_score + 13;  #  Add 13 to that
if($new_score == $secure)  #  Compare
{
   return "T";  #  Passed
}
else
{
   return "F";  #  Failed
}

# Undoing sequence on security check
$new_secure = $secure - 13;  #  Undo add 13
$new_secure = sqrt($new_secure);  #  Undo square
$new_secure = $new_secure/2;  #  Undo double
if($new_secure == $scored)  #  Compare
{
   return "T";  #  Passed
}
else
{
   return "F";  #  Failed
}