Paper 2012/681
Resilience to Distinguishing Attacks on WG-7 Cipher and Their Generalizations
Guang Gong, Mark Aagaard, and Xinxin Fan
Abstract
The stream cipher WG-7 is a lightweight variant of the well-known Welch-Gong (WG) stream cipher family, targeting for resource-constrained devices like RFID tags, smart cards, and wireless sensor nodes. Recently, a distinguishing attack was discovered against the stream cipher WG-7 by Orumiehchiha, Pieprzyk and Steinfeld. In this paper, we extend their work to a general distinguishing attack and suggest criteria to protect the WG stream cipher family from this attack. Our analysis shows that by properly choosing the minimal polynomial of the linear feedback shift register for a WG stream cipher, the general distinguishing attack can be easily thwarted.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Stream CipherWG-7Distinguishing Attack
- Contact author(s)
- x5fan @ uwaterloo ca
- History
- 2012-12-10: received
- Short URL
- https://ia.cr/2012/681
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2012/681,
author = {Guang Gong and Mark Aagaard and Xinxin Fan},
title = {Resilience to Distinguishing Attacks on {WG}-7 Cipher and Their Generalizations},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/681},
year = {2012},
url = {https://eprint.iacr.org/2012/681}
}