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http://dx.doi.org/10.13089/JKIISC.2020.30.1.1

New Higher-Order Differential Computation Analysis on Masked White-Box AES  

Lee, Yechan (Graduate School of Information Security and Institute of Cyber Security & Privacy (ICSP), Korea University)
Jin, Sunghyun (Graduate School of Information Security and Institute of Cyber Security & Privacy (ICSP), Korea University)
Kim, Hanbit (Graduate School of Information Security and Institute of Cyber Security & Privacy (ICSP), Korea University)
Kim, HeeSeok (Department of Cyber Security, College of Science and Technology, Korea University)
Hong, Seokhie (Graduate School of Information Security and Institute of Cyber Security & Privacy (ICSP), Korea University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.30, no.1, 2020 , pp. 1-15 More about this Journal
Abstract
As differential computation analysis attack(DCA) which is context of side-channel analysis on white-box cryptography is proposed, masking white-box cryptography based on table encoding has been proposed by Lee et al. to counter DCA. Existing higher-order DCA for the masked white box cryptography did not consider the masking implementation structure based on table encoding, so it is impossible to apply this attack on the countermeasure suggested by Lee et al. In this paper, we propose a new higher-order DCA method that can be applied to the implementation of masking based on table encoding, and prove its effectiveness by finding secret key information of masking white-box cryptography suggested by Lee et al. in practice.
Keywords
White-Box Cryptography, Differential Computation Analysis, Masked White-Box AES, $2^{nd}$ Order DPA;
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