Paper 2023/960 Original: eprint.iacr.org/2023/960 ↗
Beyond-Full-Round Integral Distinguisher of NIST Lightweight Cryptography Competition Finalist TinyJAMBU
Abstract
TinyJAMBU is one of the ten finalists of the NIST lightweight cryptography competition, announced in March 2021. It proposes a lightweight authenticated encryption scheme based on a lightweight 128-bit keyed permutation. TinyJAMBU supports three key lengths 128, 192, and 256 denoted by TinyJambu-128, TinyJambu192, and TinyJambu-256, respectively. The scheme as well as the permutation is well studied by the designers and third parties. The most relevant work to ours is the full-round zero-sum distinguisher under the known-key setting assumption published at Indocrypt 2022. In this work, we show that even without the known-key setting assumption, there are integral distinguishers not only for full-round versions of the permutations of TinyJambu-128 and TinyJambu-192 but also for round-increased versions of them up to 1273 rounds.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2023-06-19: last updated
- 2023-06-19: published
- Short URL
- https://ia.cr/2023/960
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2023/960,
author = {Akram Khalesi and Zahra Ahmadian},
title = {Beyond-Full-Round Integral Distinguisher of NIST Lightweight Cryptography Competition Finalist TinyJAMBU},
howpublished = {Cryptology {ePrint} Archive, Paper 2023/960},
year = {2023},
url = {https://eprint.iacr.org/2023/960}
}