Hardware Trojan horse detection method and device

Abstract

The invention provides a hardware Trojan horse detection method and device. The method comprises the following steps: sampling path delay information of positive and negative sample chips, and constructing a path delay information data set of the positive and negative sample chips; performing path delay information sampling on the chip to be tested, and constructing a path delay information data set of the chip to be tested; sending the positive and negative sample chip path delay information data set into a to-be-trained neural network for training to obtain a neural network hardware Trojan horse detector; sending the path delay information data set of the chip to be tested into the neural network hardware Trojan detector, and extracting spatial structure characteristics of the path delaydata of the chip to be tested; taking the spatial structure characteristics of the path delay data of the chip to be tested as a time sequence, sending the time sequence into a neural network, and extracting the time sequence characteristics of the path delay data of the chip to be tested; and sending the time sequence characteristics of the path delay data of the chip to be tested to a classifier network, and judging whether the chip to be tested is infected with the hardware Trojan horse or not and which hardware Trojan horse is infected.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a hardware Trojan detection method and device. Background technique [0002] Integrated circuits are the cornerstone of modern electronic information systems and are widely used in key fields such as national defense, finance, communications, and energy. The credibility of integrated circuits is always an important security issue. Once maliciously attacked, it will not only affect personal security and privacy, but also cause unbearable losses to the country and society. [0003] A hardware Trojan horse is a malicious tampering of an integrated circuit. It is like a backdoor that can be inserted into the hardware and can be used by an opponent as a foothold to attack the system. Common attack methods of hardware Trojans include changing design specifications, destroying functions, leaking sensitive information, or denial of service. Hardware Trojans can be inserted into int...

AI Technical Summary

Problems solved by technology

However, past efforts in this area have had major limitations

Existing detection methods based on power consumption information are too vague to reflect the overall characteristics of large circuit designs, and it is difficult to detect small Trojan horses that exist widely in practice; detection methods based on path delays have insufficient data processing capabilities, large information loss, and require a large number of Test vectors; and in the existing aspects, the relevance of the timing of circuit side channel information is hardly used. With the reduction of the size of the integrated circuit process, the proportion of process noise in the manufacturing process becomes larger, and the Trojan horse is designed to be more concealed and Scattered, reducing the utility and reliability of detection

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