ISSN 1000-1239 CN 11-1777/TP

• 信息安全 •

### 抗简单功耗攻击的SM2原子算法

1. (清华大学微电子学研究所 北京 100084) (hanxiaoweihxw@gmail.com)
• 出版日期: 2016-08-01
• 基金资助:
“核高基”国家科技重大专项基金项目(2014ZX01032205，2014ZX01032401-001-Z05)；国家自然科学基金项目(61402252，61402536)；信息保障技术重点实验室开放基金项目(KJ-14-006)；北京理工大学青年教师学术启动计划项目

### Atomic Algorithm Against Simple Power Attack of SM2

Han Xiaowei, Wu Liji, Wang Beibei,Wang An

1. (Institute of Microelectronics, Tsinghua University, Beijing 100084)
• Online: 2016-08-01

Abstract: SM2 algorithms are commercial elliptic curve public-key algorithms, which are released by Chinese Cryptography Administration and similar to ECC. Traditional cryptographic algorithms always have security flaws. Attackers often attack on security weaknesses of algorithms and analyze the secret-key, which poses great threat to cryptographic systems and peoples property. There are various kinds of attacks, such as power attack, fault attack and electromagnetic attack. Among these attacks, power attack is the most traditional one, which has many advantages such as small secret-key searching space and high analysis efficiency. Usually, power attack utilizes the power leakage during operation processes of cryptographic algorithms, acquires power waves and retrieves the secret key. In order to resist power attack and enhance the security of SM2 algorithms, this article learns from elliptic curve cryptography algorithms, applies the atomic concept into SM2 and proposes a novel atomic algorithm. According to theoretical comparison between the proposed algorithm and other former algorithms, it shows that the proposed algorithm saves 27.4% of computation in comparison to double-and-add always algorithm. Besides, it has less computation amount than other atomic algorithms. Furthermore, implementation has been fulfilled on SAKURA-G FPGA board. Simulation results demonstrate that the proposed algorithm can resist simple power attack successfully.