Method for shortening verification time of hardware Trojan in integrated circuit test

Abstract

The invention discloses a method for shortening verification time of hardware Trojan in an integrated circuit test. A special structure comprises a gate cell and a multi-way switch, wherein the multi-way switch has a test input signal TI and a Trojan test mode enabling signal EN; the gate cell is used for performing logical adhesion with target nodes in the tested integrated circuit, and the type of the gate cell is decided by occurrence probability 0 and 1 of the nodes; the special structure MFTD is inserted by the following steps of: firstly, setting a probability threshold value Pth; classifying all nodes of the tested integrated circuit into the nodes of which the overturning probability is greater than the Pth and the nodes of which the overturning probability is less than the Pth; and then inserting the special structure MFTD by circularly selecting the target nodes until the overturning probability of all the nodes is greater than the Pth. According to the invention, the MFTD is inserted into the design stage of the integrated circuit, so that the activation degree of the hardware Trojan is effectively improved in the test, and the verification time of the hardware Trojan is shortened.

Description

technical field [0001] The invention relates to a special structure for hardware Trojan horse detection, in particular to a special structure for hardware Trojan horse detection in integrated circuit testing. Background technique [0002] With the development of integrated circuit technology and the intelligentization of information systems, the functions of integrated circuits have become more and more complex, the chip area has become larger and larger, information security issues have become more and more prominent, and information leakage and attacks caused by hardware Trojans are frequently reported. How to detect, identify and protect hardware Trojans has become a research hotspot. Different from virus programs that use computer software system vulnerabilities to intrude and steal information, that is, software Trojan horses, hardware Trojan horses refer to malicious modification or implantation of circuits during the design or manufacture of integrated circuit chips, ...

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Problems solved by technology

This detection method can effectively detect some hardware Trojans, but this method of traversing the test vector will make the test cycle too long (see: (1) R.S.Chakraborty; S.Bhunia; "Security against Hardware Trojan through a Novel Application of Design Obfuscation", IEEE / ACM International Conference on Computer-Aided Design 2009 Page(s): 113-116; (2) "Trojan horse detection of integrated circuit chip hardware based on bypass signal analysis", Zhao Chongzheng, Deng Gaoming, Zhao Qiang; Microelectronics Science and Computer, Volume 28, Issue 11, 2011; (3) "A Review of Hardware Trojan Horses", Liu Huafeng, Luo Hongwei, Wang Liwei; Microelectronics, Volume 41, Issue 5, 2011)

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