Improved related-key differential attacks on reduced-round LBlock

Authors:
Shusheng Liu;Zheng Gong;Libin Wang
Affiliations:
School of Computer Science, South China Normal University, Guangzhou, China;School of Computer Science, South China Normal University, Guangzhou, China;School of Computer Science, South China Normal University, Guangzhou, China
Venue:
ICICS'12 Proceedings of the 14th international conference on Information and Communications Security
Year:
2012

Citing 10
Cited 1

The Boomerang Attack

FSE '99 Proceedings of the 6th International Workshop on Fast Software Encryption
PRESENT: An Ultra-Lightweight Block Cipher

CHES '07 Proceedings of the 9th international workshop on Cryptographic Hardware and Embedded Systems
KATAN and KTANTAN -- A Family of Small and Efficient Hardware-Oriented Block Ciphers

CHES '09 Proceedings of the 11th International Workshop on Cryptographic Hardware and Embedded Systems
Boomerang attacks on BLAKE-32

FSE'11 Proceedings of the 18th international conference on Fast software encryption
LBlock: a lightweight block cipher

ACNS'11 Proceedings of the 9th international conference on Applied cryptography and network security
The LED block cipher

CHES'11 Proceedings of the 13th international conference on Cryptographic hardware and embedded systems
Piccolo: an ultra-lightweight blockcipher

CHES'11 Proceedings of the 13th international conference on Cryptographic hardware and embedded systems
Related-Key boomerang and rectangle attacks

EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
KLEIN: a new family of lightweight block ciphers

RFIDSec'11 Proceedings of the 7th international conference on RFID Security and Privacy
A related key impossible differential attack against 22 rounds of the lightweight block cipher LBlock

Information Processing Letters

Comprehensive study of integral analysis on 22-round LBlock

ICISC'12 Proceedings of the 15th international conference on Information Security and Cryptology

Quantified Score

Hi-index	0.00

Visualization

Abstract

At ACNS 2011, Wu and Zhang proposed a new lightweight block cipher which is named LBlock. The design rationale of LBlock considers the trade-offs between security against cryptanalyses and performance in low-resource implementations. In this paper, we present new attacks on reduced-round LBlock using related-key differential cryptanalysis. Firstly, we construct a new related-key boomerang distinguishing attack on 16-round LBlock. Secondly, we construct a key recovery attack on 22-round LBlock based on a 16-round related-key truncated differential. In contrast to the published cryptanalysis results of reduced-round LBlock, our attacks have advantages on data and computational complexities.