Netinfo Security ›› 2020, Vol. 20 ›› Issue (10): 57-66.doi: 10.3969/j.issn.1671-1122.2020.10.008

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Research on the Assessment Method of Side Channel Information Leakage Based on t-test

WANG Kai1(), GUO Pengfei1, ZHOU Cong2, YAN Yingjian1   

  1. 1. PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China
    2. The Logistics Departments of the PLA Rocket Force, Beijing 100085, China
  • Received:2020-06-15 Online:2020-10-10 Published:2020-11-25
  • Contact: WANG Kai E-mail:yixiwk@163.com

Abstract:

Side channel analysis/attack (SCA) is one of the major security threats of cryptographic equipment. The attacker analyzes the leaked information during the physical implementation of the cryptographic algorithm to recover the key information, which poses a serious threat to the security of cryptographic algorithms. The t-test is a hypothesis test method used in statistics to test the relationship between the mean values of two unknown variance normal populations. The side channel information leakage evaluation method based on t-test is a simple, fast, reliable method without the specific implementation details of cryptographic algorithms. This paper proposes a fast leak assessment method based on t-test. The t-test is performed on the set of side channel mean traces of the AES block cipher algorithm to measure whether it can resist first-order attacks. Experiments on the side channel leakage evaluation of the AES algorithm show that the mean trace set can be used to effectively evaluate the leakage. On the premise of ensuring the accuracy of the evaluation results, the calculation time is reduced by 60.5% compared to the Welch t-test. This method effectively improves the detection efficiency of side channel information leakage.

Key words: t-test, side channel, assessment method, AES

CLC Number: