Paper 2024/448

Differential Cryptanalysis of a Lightweight Block Cipher LELBC

Manjeet Kaur, Indian Institute of Information Technology, Lucknow
Tarun Yadav, Scientific Analysis Group, Defence R & D Organisation, Delhi
Manoj Kumar, Scientific Analysis Group, Defence R & D Organisation, Delhi
Dhananjoy Dey, Indian Institute of Information Technology, Lucknow
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.
Keywords
Differential CryptanalysisLELBCLightweight Block CipherMILP
Contact author(s)
rmm21101 @ iiitl ac in
tarunyadav sag @ gov in
manojkumar sag @ gov in
ddey @ iiitl ac in
History
2024-03-18: approved
2024-03-15: received
See all versions
Short URL
https://ia.cr/2024/448
License
Creative Commons Attribution-NonCommercial-NoDerivs
CC BY-NC-ND

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}
}
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