Partitioning Communication System

Partitioning Communication System is a computer and communications security architecture based on an information flow separation policy. The PCS extends the four foundational security policies of a MILS (Multiple Independent Levels of Security) software architecture to the network:

• End-to-end Information Flow
• End-to-end Data Isolation
• End-to-end Periods Processing
• End-to-end Damage Limitation

The PCS leverages software separation to enable application layer entities to enforce, manage, and control application layer security policies in such a manner that the application layer security policies are:

• Non-bypassable
• Evaluatable
• Always-invoked
• Tamper-proof

The result is a communications architecture that allows a software separation kernel and the PCS to share responsibility of security with the application.

The PCS was invented by OIS. OIS collaborated extensively on the requirements for the PCS with:

• National Security Agency
• Air Force Research Laboratory
• University of Idaho
• Lockheed Martin
• Boeing
• Rockwell Collins