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Sensors 2013, 13(5), 6713-6729; doi:10.3390/s130506713

Reset Tree-Based Optical Fault Detection

1 Computer Engineering Department, Pusan National University, Busan 609-735, Korea 2 Electronic and Telecommunications Research Institute (ETRI), Daejeon 305-700, Korea 3 The Attached Institute of ETRI, Daejeon 305-811, Korea
* Author to whom correspondence should be addressed.
Received: 9 April 2013 / Revised: 12 May 2013 / Accepted: 13 May 2013 / Published: 21 May 2013
(This article belongs to the Section Physical Sensors)
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In this paper, we present a new reset tree-based scheme to protect cryptographic hardware against optical fault injection attacks. As one of the most powerful invasive attacks on cryptographic hardware, optical fault attacks cause semiconductors to misbehave by injecting high-energy light into a decapped integrated circuit. The contaminated result from the affected chip is then used to reveal secret information, such as a key, from the cryptographic hardware. Since the advent of such attacks, various countermeasures have been proposed. Although most of these countermeasures are strong, there is still the possibility of attack. In this paper, we present a novel optical fault detection scheme that utilizes the buffers on a circuit’s reset signal tree as a fault detection sensor. To evaluate our proposal, we model radiation-induced currents into circuit components and perform a SPICE simulation. The proposed scheme is expected to be used as a supplemental security tool.
Keywords: optical fault; single event transient; soft-error; reset tree; fault detection optical fault; single event transient; soft-error; reset tree; fault detection
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Lee, D.-G.; Choi, D.; Seo, J.; Kim, H. Reset Tree-Based Optical Fault Detection. Sensors 2013, 13, 6713-6729.

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