Detection method and detector applied to integrated circuit for detecting electromagnetic fault injection attack

Abstract

The invention relates to the field of information security, cryptography and encrypted circuits, provides detection on electromagnetic fault injection attack for information security related integrated circuits such as the encrypted circuit, and ensures to respond timely when the attack happens. Therefore, the invention adopts the technical scheme that: the structure of a detector applied to an integrated circuit for detecting electromagnetic fault injection attacks comprises phase inverters A1, A2, A3, A4 and A5, wherein the phase inverters are cascaded to form a ring oscillator, the ring oscillator is buffered through a phase inverter B and outputs a channel of oscillation signals directly input to a combinational logic delay comparative structure Detector1, another channel of oscillation signals is input to another combinational logic delay comparative structure Detector2 through the reverse action of a phase inverter C; and an input signal of each of the two Detectors is output to a clock input end of a trigger of the corresponding Detector through the combinational logic of the Detector. The detection method and the detector are mainly applied to safety design of the integrated circuit.

Description

technical field [0001] The invention relates to information security, cryptography and encryption circuits, in particular, to a detector for detecting electromagnetic fault injection attacks in integrated circuits. technical background [0002] With the development of information society, people pay more and more attention to information security. Cryptography and encryption circuits are an important guarantee for modern information security, which can prevent unauthorized access and illegal information acquisition, and at the current level of technology, it is theoretically impossible to crack through mathematical analysis and violent means. However, the implementation of the encryption algorithm is inseparable from the actual chip circuit. For example, side-channel attacks using side-channel information such as power consumption and electromagnetics generated during the encryption process, or attacks using faults that occur during the encryption process can be further anal...

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After searching relevant literature and patents, there are very few studies on the detection o

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