Method for effectively improving hardware Trojan activation probability

Abstract

The invention relates to the technical field of integrated circuit trustworthiness detection, in order to effectively remove the low activity node in the circuit, to improve the activation of the circuit, to greatly shorten the activation time of the low active node and to reduce the random and the uncertainty of the activation time of the hardware Trojan horse in the process of the hardware Trojan horse detection to a great extent. In addition, in the combination of the bypass signal analysis method or the logic test method, the activation time of the hardware Trojan horse is greatly shortened and the detection rate of the hardware Trojan horse is effectively increased. The technical proposal of the method for effectively improving the hardware Trojan horse activation probability is an effective method for improving the activation probability of the hardware Trojan horse. The method comprises the following steps that1, generating a random test vector and an excitation circuit; 2, counting the transition information of each node of the circuit; 3, setting the critical probability threshold; 4, determining the location of the implanted node; 5, integrating the circuit and detecting. The integrated circuit trustworthiness detection is mainly applied to the case of the integrated circuit trustworthiness detection.

Description

technical field [0001] The invention relates to the technical field of integrated circuit trustworthiness detection, in particular to a method for effectively improving the activation probability of a hardware Trojan horse. Background technique [0002] With the continuous improvement of semiconductor manufacturing technology, integrated circuits are widely used in national life, especially in national security, military, communications, finance, transportation and other industries that are related to the lifeline of the country, and the design, manufacture, testing and packaging of integrated circuits are also The trend of economic globalization is gradually separating, and more and more third-party companies and personnel are involved. The chip processing process is not completely autonomous and controllable, and attackers can tamper with the original circuit design at any stage to form malicious circuits and monitor circuits. Activate the circuit in a specific state to te...

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Problems solved by technology

[0008] Hardware Trojans are different from software Trojans. The detection of hardware Trojans in the chip testing stage may not be able to completely detect hardware Trojans. The chips put into production have no protective measures against hardware Trojans and do not have the ability to resist Trojans. This leads to the complete exposure of modern information systems to hardware. Under the attack of the Trojan horse, the losses caused are immeasurable. With the continuous development of semiconductor technology and integrated circuit design technology, hardware Trojan horse designers are designing more and more sophisticated hardware Trojan horses for specific purposes, that is, the area cost is getting smaller and smaller. The smaller, the rarer the activation conditions, the more unpredictable the payload

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