hardware Trojan horse detection method based on path delay analysis

Abstract

The invention relates to the technical field of integrated circuit detection, in particular to a hardware Trojan horse detection method based on path delay analysis. The device comprises a detection structure, and the detection structure comprises a detection module, a result output module and a data selector which are connected in sequence; Determining a fragile line in the carrier circuit; Adding a detection structure on the carrier circuit according to the fragile line; Carrying out first dynamic simulation on the carrier circuit added with the detection structure; Embedding a preset Trojanhorse into the carrier circuit; Carrying out second dynamic simulation on the carrier circuit implanted with the preset Trojan horse; And judging whether a hardware Trojan horse is implanted into thecarrier circuit according to the first simulation result and the second simulation result. According to the embodiment of the invention, the credibility of the integrated circuit is improved, and thedifficulty of Trojan attack is increased.

Description

technical field [0001] The invention relates to the technical field of integrated circuit detection, in particular to a hardware Trojan horse detection method based on path delay analysis. Background technique [0002] The globalization of today's integrated circuit supply chain has become a trend. To produce a qualified chip generally requires four links: IC design, manufacturing, testing and packaging. Because the cost of completing each link is very expensive, and the technical system is very large and complex, each link is separated and carried out independently of each other. Therefore, it is more likely that the chips used by users will be implanted with Trojan horses by hardware hackers, which will lead to chip security issues. In recent years, the hardware Trojan horse problem of integrated circuits has not only attracted attention in the academic circles, but also in the industrial circles. Part of the reason is the outsourcing of chip design and the migration of m...

AI Technical Summary

Problems solved by technology

[0004] However, the first detection method can only detect hardware Trojans that have a greater impact on the critical path, and if you need to detect hardware Trojans that only change the delay of non-critical paths, you need to do a lot of test cases

However, in order to maintain its concealment, Trojan horses mostly exist on non-critical paths, thereby reducing the impact of their existence on delay and power consumption

At the same time, there is no connection with the clock network for most combinatorial logic hardware Trojans, so it is difficult to detect the existence of combinatorial logic Trojans

The second method, because its carrier circuit is a pure combinational logic circuit, only adds a shadow register to each original output port, which not only increases the consumption of the pad, but also increases the area overhead

At the same time, there are both combinational logic circuits and sequential logic circuits in actual circuits, so the problem solved by this method is too one-sided

Make the Trojan detection can not achieve the expected effect

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