Paper 2025/2142 Original: eprint.iacr.org/2025/2142 ↗
Differential cryptanalysis of An optimized novel lightweight block cipher for image encryption
Abstract
This paper presents a security analysis of the ARX-based lightweight block cipher proposed by Mohanapriya and Nithish (Sci Rep 15, 36060 (2025)) for image encryption in IoT environments. The cipher employs a 64-bit key and a 64-bit block size, relying on Addition, Rotation, and XOR (ARX) operations. Our analysis demonstrates that the full-round version of this cipher is vulnerable to differential cryptanalysis. In fact, the cipher can be distinguished from a random permutation using $2^{41}$ chosen plaintexts. Consequently, the designers' security claims are not fully supported.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2025-11-23: last updated
- 2025-11-23: published
- Short URL
- https://ia.cr/2025/2142
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/2142,
author = {Khaled Hosseini and Sadegh Sadeghi},
title = {Differential cryptanalysis of An optimized novel lightweight block cipher for image encryption},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/2142},
year = {2025},
url = {https://eprint.iacr.org/2025/2142}
}