Paper 2024/901 Original: eprint.iacr.org/2024/901 ↗
Practical Committing Attacks against Rocca-S
Abstract
This note shows practical committing attacks against Rocca-S, an authenticated encryption with associated data scheme designed for 6G applications. Previously, the best complexity of the attack was $2^{64}$ by Derbez et al. in ToSC 2024(1)/FSE 2024. We show that the committing attack against Rocca by Takeuchi et al. in ToSC 2024(2)/FSE 2025 can be applied to Rocca-S, where Rocca is an earlier version of Rocca-S. We show a concrete test vector of our attack. We also point out a committing attack that exploits equivalent keys.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2024-06-06: last updated
- 2024-06-06: published
- Short URL
- https://ia.cr/2024/901
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2024/901,
author = {Ryunosuke Takeuchi and Yosuke Todo and Tetsu Iwata},
title = {Practical Committing Attacks against Rocca-S},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/901},
year = {2024},
url = {https://eprint.iacr.org/2024/901}
}