Internet-of-things potential safety hazard monitoring method for extracting electric appliance fingerprints based on LDO

Abstract

The invention belongs to the technical field of internet-of-things safety, and particularly relates to an internet-of-things potential safety hazard monitoring method for extracting electric appliance fingerprints based on an LDO. Based on the relationship between the number of conducted power transistors in a digital LDO circuit widely existing in the internet-of-things equipment and the input voltage, electric appliance fingerprints in the running state of the equipment are calculated by monitoring MOSFET array digital signals for controlling power in the digital LDO circuit and the LDO input voltage; whether the current equipment has an abnormal behavior is determined by judging whether the fingerprint of the electric appliance changes, and the purpose of monitoring the potential safety hazard of the Internet of Things is achieved. The method comprises the specific steps that the number of power transistors for voltage control in the digital LDO circuit is obtained; lDO input voltage is calculated; an electric appliance fingerprint in an equipment running state is calculated; and the running state of the equipment is judged according to the calculated electric appliance fingerprint, and whether an abnormal behavior exists or not is judged.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things security, and in particular relates to a method for monitoring potential safety hazards of the Internet of Things based on a digital LDO (low dropout linear regulator) for extracting electrical fingerprints. Background technique [0002] The Internet of Things (IoT, Internet of things) is another product of the information industry revolution after computers, the Internet and mobile communications. At present, the Internet of Things has been officially listed as one of the strategic emerging industries that the country focuses on. The Internet of Things industry has the characteristics of a long industrial chain and involves multiple industrial groups, and its application scope covers almost all walks of life. As IoT devices enter various application scenarios in large numbers, many of them may handle sensitive or private information, however, the low power consumption, low cost, and m...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the power and size limitations of the existing Internet of Things devices, which make it difficult to use existing methods for power analysis and electrical appliance fingerprint extraction, the present invention provides an IoT security hidden danger monitoring method based on digital LDO for electrical appliance fingerprint extraction.

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