标题：The initialization stage analysis of ZUC v1.5
作者：Zhou, Chunfang ;Feng, Xiutao ;Lin, Dongdai
作者机构：[Zhou, Chunfang ;Feng, Xiutao ;Lin, Dongdai ] State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijin 更多
会议名称：10th International Conference on Cryptography and Network Security, CANS 2011
会议日期：December 10, 2011 - December 12, 2011
来源：Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
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 2n, 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. © 2011 Springer-Verlag.