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Pull the Rug from Under: Malicious Reconfiguration of Executing Program in FPGA and its Defense

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posted on 10.06.2019 by Michael C. Glapa
The Field Programmable Gate Array (FPGA) has been used for decades in embedded applications where custom hardware is not practical or feasible. However, thanks to increases in size and compute capabilities, the FPGA has become more attractive as an option to supplement a general-purpose Central Processing Unit (CPU) for accelerating complex computations used for encryption, machine learning, and many other applications. Although FPGAs have already appeared in embedded Systems-on-Chip (SoC) and cloud environments, the reconfigurable nature of FPGAs creates security vulnerabilities not found in more traditional accelerators like Graphics Processing Units (GPU). In this paper, we describe a vulnerability in an Altera Cyclone V SoC and demonstrate an attack that exploits this vulnerability. We propose a hardware modification that would provide a defense against this attack, and we implement a Linux kernel module to demonstrate a proof-of-concept for this hardware solution.

History

Degree Type

Master of Science in Electrical and Computer Engineering

Department

Electrical and Computer Engineering

Campus location

West Lafayette

Advisor/Supervisor/Committee Chair

Felix Lin

Advisor/Supervisor/Committee co-chair

Saurabh Bagchi

Additional Committee Member 2

Jan Allebach

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