Paper 2010/066 Original: eprint.iacr.org/2010/066 ↗
Some Observations on TWIS Block Cipher
Abstract
The 128-bit block cipher TWIS was proposed by Ojha et al in 2009. It is a lightweight block cipher and its design is inspired from CLEFIA. In this paper, we first study the properties of TWIS structure, and as an extension we also considered the generalized TWIS-type structure which can be called G-TWIS cipher, where the block size and round number can be arbitrary values. Then we present a series of 10-round differential distinguishers for TWIS and a n-round differential distinguisher for G-TWIS whose probabilities are all equal to 1. Therefore, by utilizing these kinds of differential distinguishers, we can break the full 10-round TWIS cipher and n-round G-TWIS cipher.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2010-02-09: last updated
- 2010-02-08: published
- Short URL
- https://ia.cr/2010/066
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2010/066,
author = {Bozhan Su and Wenling Wu and Lei Zhang and Yanjun Li},
title = {Some Observations on TWIS Block Cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2010/066},
year = {2010},
url = {https://eprint.iacr.org/2010/066}
}