Circuit security testable design method capable of detecting inactive hardware Trojan horse and detecting method of hardware Trojan horse

Abstract

The invention relates to a circuit security testable design method capable of detecting an inactive hardware Trojan horse and a detecting method for the hardware Trojan horse. Firstly, the design and the verification on an original circuit are completed. Secondly, a security testing mode is added for the circuit, the clock frequency under the security testing mode is great less than the working frequency of the circuit, and work such as corresponding compositing, locating and wiring, timing sequence analyzing and designing is finished. In the chip testing process, the security testing mode is in use, and by means of a security testing clock with the using frequency which is great less than a functional clock, the dynamic power consumption during whole circuit running is lowered, so that the proportion of the static power consumption of the hardware Trojan horse in an idle state on the whole circuit power consumption is increased, and detecting on the hardware Trojan horse which is in a sleep mode is achieved.

Description

technical field [0001] The invention relates to a circuit security testability design method capable of detecting inactive hardware Trojan horses and a detection process for hardware Trojan horses, especially a design that makes hardware Trojan horses easier to detect by adding additional circuits in the circuit design stage The method and detection process are especially suitable for detecting hardware Trojans that are in a dormant state for a long time. Background technique [0002] With the development of the integrated circuit industry towards global cooperation, more and more third parties are involved in the integrated circuit industry chain, which makes more and more uncontrolled factors in the design and manufacturing process of integrated circuits. This raises concerns about the security of integrated circuits. Due to the participation of third-party uncontrolled links, integrated circuits are easily modified maliciously and implanted into hardware Trojan horses du...

AI Technical Summary

Problems solved by technology

[0004] The above two types of methods can detect a certain type of specific hardware Trojan to a certain extent, but both rely on the need to trigger the hardware Trojan or require the hardware Trojan to be in a working state all the time, which affects the relationship between circuit power consumption and frequency, and path delay. information

However, for hardware Trojans that are in a dormant state for a long time, the above two methods are more difficult to effectively detect

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