C3PO repository packages the Home Subscription Service (HSS), Database, Charge Data Function (CDF), Charge Trigger Function (CTF), Policy Control Rules Function (PCRF) and Intel® SGX (SGX-DLR-IN, SGX Router, SGX-DLR-OUT), a set of three VNFs/Processes that enable protection of sensitive Call Data Records (CDR) for adds security and audit capabilities to billing and charging.