Hardware trojan horse detection method based on few-state point analysis

Abstract

A hardware trojan horse detection method based on few-state point analysis comprises the steps of: S1: integrating RTL-level suspicious codes to obtain a gate-level net list of a circuit; S2: applying random excitation to the gate-level net list obtained by integration and checking a turn-over rate; if the turn-over rate is 100%, judging that the circuit does not have trojan horse therein; if the turn-over rate does not reach 100%, primarily judging that the circuit possibly has the trojan horse and going to the step S3; and S3: analyzing data of the turn-over rate in details to find out a few-state point which is rarely turned over, if the distribution of the few-state points is relatively discrete, primarily judging that the circuit does not have the trojan horse therein, and if the distribution of the few-state points is relatively concentrated, primarily judging that the circuit possibly has the trojan horse. The hardware trojan horse detection method based on the few-state point analysis has the advantages of easiness for implementation, high recognition efficiency, low detection cost and the like.

Description

technical field [0001] The invention mainly relates to the field of chip safety detection, in particular to a hardware Trojan horse detection method based on few-state point analysis. Background technique [0002] As an important component in today's computer and electronic fields, integrated circuits (ICs) are increasingly complex. As the foundation of the information industry, their safety and reliability are of great significance. In the 1990s, due to the rapid development of integrated circuit manufacturing technology, the scale of chip design has greatly increased, and the complexity of chips has increased sharply, resulting in a large gap between the ability of designers and the complexity required by chips. To bridge this gap, designers have adopted simplified chip design processes to shorten design cycles. This has led to the emergence of many IP suppliers, specializing in providing reusable integrated circuit modules for third parties. The separation of integrated...

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Problems solved by technology

However, the acquisition process of bypass information is easily disturbed by factors such as noise, and the scale of the hardware Trojan horse circuit is usually relatively small, and it is basically in a "sleeping" state when it is not touched. Therefore, the bypass information generated by it is relatively small. even insignificant

On the other hand, with the continuous reduction of IC feature size, the impact of noise on bypass information has reached a level that cannot be ignored, which brings severe challenges to hardware Trojan horse detection technology based on bypass information.

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