has been held as an important part of WORLDCOMP:
Developing high assurance systems is costly. Trustworthy system development entails a high non-recurring engineering (NRE) cost together with a low volume of units over which to amortize that cost. This results in an increasing gap between systems that meet DoD requirements and those that are available to consumers. Also, the potential for developmental and operational attacks against hardware requires countermeasures that make it very expensive to design and manufacture the custom hardware used to build high assurance systems. To address these problems, we propose an approach to trustworthy system development based on 3-D integration, an emerging chip fabrication technique in which two or more dies are fabricated individually and then combined into a single stack using vertical conductive posts. With 3-D integration, a general-purpose die, or computation plane, can be combined with a special-purpose die, or control plane. Our approach has the potential to reduce the cost of developing hardware for high assurance systems by joining a mass-produced computation plane with a custom control plane. Our approach provides several advantages, including
In the following, we discuss the security advantages of using 3-D integrated hardware in sensitive applications, where security is of the utmost importance, and we outline problems, challenges, attacks, solutions, and topics for future research.
Ted Huffmire is an Assistant Professor of Computer Science at the Naval Postgraduate School in Monterey, California. His research spans both computer security and computer architecture, focusing on hardware-oriented security and the development of policy enforcement mechanisms for application-specific devices. He has a Ph.D. in Computer Science from the University of California, Santa Barbara. He is a member of the IEEE and the ACM.