Paper 2025/1976 Original: eprint.iacr.org/2025/1976 ↗
Improved Differential Cryptanalysis of ARADI
Abstract
This study investigates and improves the differential cryptanalysis of the ARADI block cipher, a low-latency cryptographic system developed by the United States National Security Agency for memory encryption. The preliminary security assessment of ARADI revealed deficiencies that require additional examination. This study revisits and corrects the key recovery attack introduced by Bellini et al. (Indocrypt 2024). By correcting these mistakes, the research presents a precise 11-round key recovery method with revised attack complexities. Additionally, the analysis is expanded to introduce a key recovery attack for 12 rounds of ARADI, leaving the security margin of the cipher to only 4 rounds.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2025-10-22: last updated
- 2025-10-22: published
- Short URL
- https://ia.cr/2025/1976
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/1976,
author = {Surajit Mandal and Sandip Kumar Mondal and Raghvendra Rohit and Santanu Sarkar},
title = {Improved Differential Cryptanalysis of ARADI},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1976},
year = {2025},
url = {https://eprint.iacr.org/2025/1976}
}