SecCMP: Enhancing Critical Secrets Protection in Chip-Multiprocessors

Li Yang, Lu Peng and Balachandran Ramadass
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Li Yang: University of Tennessee at Chattanooga, USA
Lu Peng: Louisiana State University, USA
Balachandran Ramadass: Louisiana State University, USA

International Journal of Information Security and Privacy (IJISP), 2008, vol. 2, issue 4, 54-66

Abstract: Security has been considered as an important issue in processor design. Most of the existing designs of security handling assume the chip as a single secure unit. However, such assumption is vulnerable to exposure resulted from a central failure point. In this article, we propose a secure Chip-Multiprocessor architecture (SecCMP) to handle security related problems such as key protection and core authentication in multi-core systems. Matching the nature of multi-core systems, a distributed threshold secret sharing scheme is employed to protect critical secrets. A critical secret (e.g., encryption key) is divided into multiple shares and distributed among multiple cores instead of being kept a single copy in one core that is sensitive to exposure. The proposed SecCMP can not only enhance the security and fault-tolerance in secret protection but also support core authentication. SecCMP is designed to be an efficient and secure architecture for CMPs.

Date: 2008
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International Journal of Information Security and Privacy (IJISP) is currently edited by Yassine Maleh

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