Hardware security assessment method for chaotic cryptosystem

Abstract

The invention discloses a hardware security evaluation method for a chaotic cipher system, which comprises the following steps of 1) analyzing the structure of the chaotic block cipher system applying a replacement-replacement network structure, and judging the possible bypass information leakage; 2) comparing the links with bypass information leakage in the SP structure, and selecting the attack points; 3) modeling the energy consumption information corresponding to the intermediate data generated at the attack point, wherein the adopted energy consumption model is a Hamming weight model; 4) performing the correlation energy analysis attack on the chaotic cryptographic algorithm of the SP structure according to the energy consumption model; and 5) evaluating the security of the chaotic cryptographic algorithm of the SP structure during hardware implementation according to the attack result. According to the method, the hardware security of the chaotic cryptosystem passing the statistical test can be verified, whether the cryptosystem has the possibility of being cracked by a side channel attack or not is verified, and a necessary method and a necessary detection means are provided for the design, analysis and evaluation of the cryptosystem.

Description

technical field [0001] The present invention relates to the technical field of information security, focuses on the hardware security of the chaotic cryptosystem, and explores whether the bypass information leaked by the theoretically verified chaotic cryptosystem during operation can be used by attackers to crack the cryptographic system, specifically a chaotic cryptosystem System hardware security assessment method. Background technique [0002] With the rapid development of information technology, the country, society, and individuals are increasingly connected with information technology, so information security has become particularly important. For the country, information security is related to economic security, social stability, military security, etc. For individuals, information security is related to personal privacy, property safety, personal safety and so on. Therefore, information security has aroused people's widespread attention, and cryptography and crypta...

AI Technical Summary

Problems solved by technology

Compared with traditional methods, it takes less time and has less computational complexity. Classical cryptographic algorithms such as Advanced Encryption Standard (AES for short) and Data Encryption Standard (DES for short) can pass side-channel attacks. The method can be cracked in a relatively short period of time, and many cryptosystems or processors have the risk of bypass information leakage. In 2018, two processor companies, Intel and AMD, were exposed to the fact that many of their processors were bypassed. The risk of hacking

[0004] Chaotic systems are applied to cryptographic systems because of their excellent nonlinear characteristics. Researchers have designed many chaotic cryptographic algorithms with excellent performance. platform, but there are few studies on side-channel attacks on chaotic cryptosystems

When the chaotic cryptographic algorithm runs on the hardware platform, there is also the possibility of leaking bypass information. Therefore, it is necessary to test the chaotic cryptographic system and design a cryptographic system with protection strategies.

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