Name:Value Encryption Utility using PL/SQL
I recently ran into an issue where, as part of a webservice call I was making using the Oracle APEX_WEB_SERVICE API, I needed to pass the application id and password in the soap header, but I did not want those sensitive data elements to be exposed in my pl/sql code in cleartext. I decided I wanted to encrypt the data and retrieve it at run time as a function call. I tried to find a way to do this via Stack Overflow, Google, etc.