[Resource Topic] 2024/448: Differential Cryptanalysis of a Lightweight Block Cipher LELBC

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Title:
Differential Cryptanalysis of a Lightweight Block Cipher LELBC

Authors: Manjeet Kaur, Tarun Yadav, Manoj Kumar, Dhananjoy Dey

Abstract:

In this study, we investigate the newly developed low energy lightweight block cipher (LELBC), specifically designed for resource-constrained Internet of Things (IoT) devices in smart agriculture. The designers conducted a preliminary differential cryptanalysis of LELBC through mixed-integer linear programming (MILP). This paper further delves into LELBC’s differential characteristics in both single and related-key frameworks using MILP, identifying a nine-round differential characteristic with a probability of 2^{-60} in a single-key framework and a 12-round differential characteristic with a probability of 2^{-60} in a related-key framework.

ePrint: https://eprint.iacr.org/2024/448

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