the initialization stage analysis of zuc v1.5

ISCAS OpenIR

	the initialization stage analysis of zuc v1.5
	Zhou Chunfang; Feng Xiutao; Lin Dongdai
	2011
会议名称	Cryptology and Network Security 10th International Conference, CANS 2011
会议录名称	Cryptology and Network Security
页码	40-53
会议日期	2011
会议地点	Sanya China
收录类别	SPRINGER ; EI
ISSN	0302-9743
ISBN	978-3-642-25512-0
部门归属	State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100190 China
摘要	The ZUC algorithm is a new stream cipher, which is the core of the standardised 3GPP confidentiality and integrity algorithms 128-EEA3 & 128-EIA3. In this paper, we analyze the initialization stage of ZUC v1.5. First of all, we study the differential properties of operations in ZUC v1.5, including the bit-reorganization, exclusive-or and addition modulo 2 n , bit shift and the update of LFSR. And then we give a differential trail covering 24 rounds of the initialization stage of ZUC v1.5 with probability 2 ? 23.48 , which extends the differential given in the design and evaluation report of ZUC v1.5 to four more rounds. Nevertheless, the study shows that the stream cipher ZUC v1.5 can still resist against chosen-IV attacks.; The ZUC algorithm is a new stream cipher, which is the core of the standardised 3GPP confidentiality and integrity algorithms 128-EEA3 & 128-EIA3. In this paper, we analyze the initialization stage of ZUC v1.5. First of all, we study the differential properties of operations in ZUC v1.5, including the bit-reorganization, exclusive-or and addition modulo 2 n , bit shift and the update of LFSR. And then we give a differential trail covering 24 rounds of the initialization stage of ZUC v1.5 with probability 2 ? 23.48 , which extends the differential given in the design and evaluation report of ZUC v1.5 to four more rounds. Nevertheless, the study shows that the stream cipher ZUC v1.5 can still resist against chosen-IV attacks.
关键词	Zuc &#8211 Initialization &#8211 Chosen Iv Attack &#8211 Differential Trail
主办者	National Natural Science Foundation of China (NSFC); Shandong University (SDU)
语种	英语
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/16233
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Zhou Chunfang,Feng Xiutao,Lin Dongdai. the initialization stage analysis of zuc v1.5[C],2011:40-53.