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Partly-Pseudo-Linear Cryptanalysis of Reduced-Round Speck

Department of Computer Science, The George Washington University, 800 22nd St. NW, Washington, DC 20052, USA
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Received: 2 July 2020 / Revised: 30 November 2020 / Accepted: 2 December 2020 / Published: 30 December 2020
We apply McKay’s pseudo-linear approximation of addition modular 2n to lightweight ARX block ciphers with large words, specifically the Speck family. We demonstrate that a pseudo-linear approximation can be combined with a linear approximation using the meet-in-the-middle attack technique to recover several key bits. Thus we illustrate improvements to Speck linear distinguishers based solely on Cho–Pieprzyk approximations by combining them with pseudo-linear approximations, and propose key recovery attacks. View Full-Text
Keywords: Speck; pseudo-linear cryptanalysis; linear cryptanalysis; partly-pseudo-linear attack Speck; pseudo-linear cryptanalysis; linear cryptanalysis; partly-pseudo-linear attack
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MDPI and ACS Style

Alzakari, S.A.; Vora, P.L. Partly-Pseudo-Linear Cryptanalysis of Reduced-Round Speck. Cryptography 2021, 5, 1. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography5010001

AMA Style

Alzakari SA, Vora PL. Partly-Pseudo-Linear Cryptanalysis of Reduced-Round Speck. Cryptography. 2021; 5(1):1. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography5010001

Chicago/Turabian Style

Alzakari, Sarah A., and Poorvi L. Vora 2021. "Partly-Pseudo-Linear Cryptanalysis of Reduced-Round Speck" Cryptography 5, no. 1: 1. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography5010001

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