Paper 2020/1072
Cryptanalysis of the permutation based algorithm SpoC
Liliya Kraleva, Raluca Posteuca, and Vincent Rijmen
Abstract
In this paper we present an analysis of the SpoC cipher, a second round candidate of the NIST Lightweight Crypto Standardization process. First we present a differential analysis on the sLiSCP-light permutation, a core element of SpoC. Then we propose a series of attacks on both versions of SpoC, namely round-reduced differential tag forgery and message recovery attacks, as well as a time-memory trade-off key-recovery attack on the full round version of Spoc-64. Finally, we present an observation regarding the constants used in the sLiSCP-light permutation. To the best of our knowledge, this paper represents the first third-party analysis on both SpoC cipher and the sLiSCP-light permutation.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Contact author(s)
-
lkraleva @ esat kuleuven be
raluca posteuca @ esat kuleuven be - History
- 2020-09-09: received
- Short URL
- https://ia.cr/2020/1072
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2020/1072,
author = {Liliya Kraleva and Raluca Posteuca and Vincent Rijmen},
title = {Cryptanalysis of the permutation based algorithm SpoC},
howpublished = {Cryptology ePrint Archive, Paper 2020/1072},
year = {2020},
note = {\url{https://eprint.iacr.org/2020/1072}},
url = {https://eprint.iacr.org/2020/1072}
}
