祖冲之序列密码算法

The ZUC Stream Cipher Algorithm

祖冲之算法,简称ZUC,是一个面向字设计的序列密码算法,其在128b种子密钥和128b初始向量控制下输出32b的密钥字流.祖冲之算法于2011年9月被3GPP LTE采纳为国际加密标准(标准号为TS 35.221),即第4代移动通信加密标准,2012年3月被发布为国家密码行业标准(标准号为GM/T 0001—2012),2016年10月被发布为国家标准(标准号为GB/T 33133—2016).简单介绍了祖冲之算法,并总结了其设计思想和国内外对该算法安全性分析的主要进展.

The ZUC algorithm is a word oriented stream cipher,which outputs a 32 b key word stream under the control of a 128 b seed key and a 128 b initial vector.ZUC was adopted as the encryption standard(Grant TS 35.221) by 3GPP LTE in September 2011,i.e.,the 4th mobile communication encryption standard,and issued as the national cipher industry standard(Grant GM/T 0001—2012) in March 2012 and as the national standard(Grant GB/T 33133—2016) in October 2016 respectively.In this paper the ZUC algorithm is recalled simply,and then the idea of its design and main progress on its security analysis are surveyed.