Automatic Generation of Security Assertions for Detecting Hardware Trojans

Abstract

The invention provides a method for automatically generating a security assertion for detecting a hardware Trojan, including: simulating a register transfer level netlist file of a chip to be tested to obtain a simulation running result and a simulation running file; The running results are analyzed to obtain the signal of the suspected hardware Trojan circuit; the following steps are performed for each signal of the suspected hardware Trojan circuit: according to the simulation running file, the register transfer level invariant corresponding to the signal of the suspected hardware Trojan circuit is deduced; according to the construction The knowledge base of security assertion templates, the deduced register transfer level invariants, and the signals of suspected hardware trojan circuits, generate security assertions corresponding to the signals of suspected hardware trojan circuits. The invention utilizes the register transmission level invariant to realize the automatic generation of the security assertion, reduces the workload of designers, saves time and is less prone to errors, and effectively improves the efficiency of formal verification and detection of hardware Trojan horses.

Description

technical field [0001] The invention relates to the technical field of safety verification of integrated circuits, in particular to a method for automatically generating safety assertions for detecting hardware Trojan horses. Background technique [0002] Hardware Trojans refer to special modules and circuits that are intentionally implanted into electronic systems, or defective modules and circuits left unintentionally by designers. This kind of module or circuit is usually hidden in the original circuit. Under special conditions, the module or circuit can be used by attackers to modify the original circuit purposefully, and then achieve destructive functions, causing the original circuit to Things that should not have happened, such as leaking information to an attacker, changing the function of the circuit, or even directly damaging the circuit. [0003] In recent years, due to the rapid development of integrated circuit technology, the chip design process has become inc...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in the prior art, the assertions required for formal verification need to be manually written, which is very time-consuming and error-prone, resulting in low efficiency of formal verification for detecting hardware Trojans

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