title: Create hash to match with Oracle DBMS_UTILITY.get_hash_value
body: <p>I'm working on a PHP application with a mysql backend to replace an existing Oracle forms application with an Oracle database.</p>
  
  <p>I've received a dump of the Oracle database and loaded this data into MySQL. One of the tables contains the usernames and passwords. The passwords are not stored as plain text but as a hash. These hashes have been created with the get_hash_value function from the DBMS_UTILITY package.</p>
  
  <p>What is the algorithm used by this internal Oracle function? </p>
  
  <p>Does anyone know of a function in PHP (or any other language) that would create the same hash?</p>
  
  <p>I need to create the hash without Oracle to be able to validate the users passwords in the new environment (PHP + MySQL).</p>