抗差分功耗攻击的DES算法研究  

Research of DES Algorithm for Against Differential Power Analysis

作　　者：徐鹏[1] 薛伟[1] 

机构地区：[1]江南大学物联网工程学院,江苏无锡214000

出　　处：《计算机仿真》2018年第1期282-286,共5页Computer Simulation

摘　　要：信息在传输前需要先通过加密算法的加密,这是保障通信安全的重要措施之一。但是NFC通信时使用的DES加密算法存在容易被差分功耗攻击破解的问题。针对以上问题,采用掩码技术对DES加密算法进行改进。分析差分功耗分析的攻击模型。对加密算法中每轮需要处理的中间值进行掩码处理从而使功耗随机化。对改进后的DES加密算法进行仿真。从仿真结果来看,改进的DES算法能有效的抵抗差分功耗攻击。ABSTRACT ： Information encryption is one of the important measures to ensure the security of the communication be- fore the information transmission. But the DES encryption algorithm used in the Near Field Communication is easy to ：i . be cracked by differential power analysis. Considering above problem, the mask technology is used to improve the se- curity of DES encryption algorithm. First, the attack model of differential power analysis was analyzed. Then, the middle value of each round in the encryption algorithm was masked to reduce the power consumption. Finally, the im- proved DES encryption algorithm was simulated. The simulation results show that the improved DES algorithm can ef- fectively resist differential power analysis.

关 键 词：差分功耗分析 掩码技术 数据加密标准 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]