Secure Proactive Recovery a Hardware Based Mission Assurance Scheme
Abstract
Mission Assurance in critical systems entails both fault tolerance and security. Since fault tolerance via redundancy or replication is contradictory to the notion of a limited trusted computing base, normal security techniques cannot be applied to fault tolerant systems. Thus, in order to enhance the dependability of mission critical systems, designers employ a multi-phase approach that includes fault/threat avoidance/prevention, detection and recovery. Detection phase is the fallback plan for avoidance/prevention phase, as recovery phase is the fallback plan for detection phase. However, despite this three-stage barrier, a determined adversary can still defeat system security by staging an attack on the recovery phase. Recovery being the final stage of the dependability life-cycle, unless certain security methodologies are used, full assurance to mission critical operations cannot be guaranteed. For this reason, a new methodology is proposed: secure proactive recovery.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2011
- Accession Number
- ADA548916
Entities
People
- Kevin Kwiat
- Ruchika Mehresh
- Shambhu Upadhyaya
Organizations
- Air Force Research Laboratory