Differential Cryptanalysis of a Lightweight Block Cipher LELBC

Manjeet Kaur; Tarun Yadav; Manoj Kumar; Dhananjoy Dey

Paper 2024/448 Original: eprint.iacr.org/2024/448 ↗

Differential Cryptanalysis of a Lightweight Block Cipher LELBC

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.

Metadata

Available format(s): PDF
Category: Attacks and cryptanalysis
Publication info: Preprint.
History: 2024-03-15: last updated; 2024-03-15: published
Short URL: https://ia.cr/2024/448
License: https://creativecommons.org/licenses/by-nc-nd/4.0/

BibTeX

@misc{cryptoeprint:2024/448,
      author = {Manjeet Kaur and Tarun Yadav and Manoj Kumar and Dhananjoy Dey},
      title = {Differential Cryptanalysis of a Lightweight Block Cipher LELBC},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/448},
      year = {2024},
      url = {https://eprint.iacr.org/2024/448}
}