高效Kasumi加密算法的软件设计与实现  

A High Efficient Software Design and Implementation of 3G Kasumi Algorithm

作　　者：李翔[1] 徐童[1] 熊焰[1] 

机构地区：[1]中国科学技术大学计算机科学与技术学院,安徽合肥230027

出　　处：《通信技术》2012年第3期37-40,共4页Communications Technology

摘　　要：Kasumi分组密码由MISTY1加密算法发展而来,为第三代移动通信系统(3G)无线网络提供完整性和保密性服务。目前,该算法已有多种高效硬件实现方法,却少有高效软件实现方法提出。这里提出一种基于包并行的高效软件设计与实现,并通过对FI子函数进行查表来优化加密过程,同时引入新的SSE转置指令实现快速密钥生成。实验结果表明这里的方法比协议实现要快4倍,并达到实际通信部署的要求。The Kasumi block cipher,evolved from the Misty encryption algorithm,provides integrity and confidentiality services for 3G wireless networks.This algorithm could be easily improved by hardware implementation,but few software implementations are proposed.A new software design and implementation based on packet-parallel is presented,and also the optimization of encryption process by table looking-up in FI part described,while a new transpose instruction introduced for quick generation of multiple keys.Experiment results show that the presented method is four times faster than the spec implementation,and thus could fairly meet the requirements of practical deployment.

关 键 词：移动通信 KASUMI算法 信息安全 软件无线电 

分 类 号：TN918.4[电子电信—通信与信息系统]