Anti-hardware Trojan Horse Circuit Design Method Based on Activation Probability Analysis

Abstract

The invention relates to the field of design for testability of integrated circuit technology. An anti-hardware Trojan horse circuit design method based on activation probability analysis is disclosed, which mainly includes two parts: the first part is the circuit design of the probabilistic fuzzy unit; the second part is the insertion algorithm of the probabilistic fuzzy unit. Aiming at the characteristics of strong concealment and great harm of hardware Trojans, the present invention selects appropriate nodes to insert into the probability fuzzy unit circuit by analyzing the activation probability of circuit nodes, so that the attacker cannot correctly judge the signal jump probability of the internal nodes of the circuit, and the Hardware Trojans can only be inserted based on probabilistically fuzzed circuits. Compared with the prior art, the invention can enhance the resistance ability of the designed circuit to the hardware Trojan horse, so that the implanted hardware Trojan horse will not be able to achieve the specific purpose designed by the attacker, and can be easily detected in the testing stage.

Description

technical field [0001] The invention relates to the field of testability design of integrated circuits, in particular to an anti-hardware Trojan horse circuit design method based on activation probability analysis. Background technique [0002] In the era of information technology, software security issues have been highly valued, but the security threats of hardware, which is the foundation of software applications, are often underestimated. In 2005, in a report of the US National Defense Science Board, it was first proposed that due to the separation of the design and production process of integrated circuits, there will be credibility problems in the supply of integrated circuits [1]. The separation of integrated circuit design and production process means that integrated circuit design manufacturers adopt the method of foundry for circuit production [2]. With the trend of globalization of the integrated circuit industry in recent years, a circuit chip often needs to be ...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a circuit design method capable of resisting hardware Trojan horse attacks in view of the characteristics of strong concealment and great harm of Trojan horse circuits, and to increase the probability that implanted Trojan horse circuits are detected during the testing phase , and make it impossible to achieve specific malicious purposes when the circuit is working normally

Images