### A New Higher Order Differential of RAGHAV

##### Abstract

RAGHAV is a 64-bit block cipher proposed by Bansod in 2021. It supports 80-, and 128-bit secret keys. The designer evaluated its security against typical attack, such as differential cryptanalysis, linear cryptanalysis, and so on. On the other hand, it has not been reported the security of RAGHAV against higher order differential attack, which is one of the algebraic attacks. In this paper, we applied higher order differential cryptanalysis to RAGHAV. As a results, we found a new full-round higher order characteristic of RAGHAV using 1-st order differential. Exploiting this characteristic, we also show that the full-round of RAGHAV is attackable by distinguishing attack with 2 chosen plaintexts.

Available format(s)
Category
Attacks and cryptanalysis
Publication info
Published elsewhere. 2022 Tenth International Symposium on Computing and Networking Workshops (CANDARW)
DOI
10.1109/CANDARW57323.2022.00016
Keywords
Cryptanalysis Higher order differential Saturation property Block cipher RAGHAV
Contact author(s)
shiba @ wit ocn ne jp
History
2022-11-21: last of 2 revisions
See all versions
Short URL
https://ia.cr/2022/1617

CC BY

BibTeX

@misc{cryptoeprint:2022/1617,
author = {Naoki Shibayama and Yasutaka Igarashi},
title = {A New Higher Order Differential of RAGHAV},
howpublished = {Cryptology ePrint Archive, Paper 2022/1617},
year = {2022},
doi = {10.1109/CANDARW57323.2022.00016},
note = {\url{https://eprint.iacr.org/2022/1617}},
url = {https://eprint.iacr.org/2022/1617}
}

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