This thread summarizes the current situation regarding file encryption in RTC:
You would need to raise an enhancement request if you wanted this handled by RTC.
There are some other options that might help.
- The underlying database should have security mechanisms to encrypt data - it is worth looking at that.
- Next, you could also encrypt the disk the data is stored on (for example, I have worked with a customer that used BitLocker - part of Windows Server - to encrypt the disk RTC and the database runs on).
It is worth asking more questions about the request. For example - who are they trying to conceal the source code from?
So using an external program for file encryption would still be required with the current versions of RTC (4.x).