Safety detection sensor system based on FPGA

Abstract

The invention provides a security detection sensor system based on an FPGA (Field Programmable Gate Array), which comprises a PLL (Phase Locked Loop) and a delay chain circuit, and is characterized in that the PLL is connected with the delay chain circuit, and the PLL is used for providing a basic work clock CLKIN for the delay chain circuit; the delay chain circuit is used for transmitting the work clock CLKIN to a next-level unit and checking whether the work clock CLKIN has potential safety hazards in the transmission process or not, and if clock violation occurs in advance or after delay, it is indicated that potential safety hazards exist. The temperature of the working environment of the chip can be detected, safety detection can be carried out on the circuit, meanwhile, the whole system is designed based on the digital basic unit in the FPGA, process transplantation is facilitated, the circuit scale is small, and the cost is low.

Description

technical field [0001] The present application relates to the field of chip security, in particular to an FPGA-based security detection sensor system. Background technique [0002] With the development of integrated circuits, the scale of circuits inside chips is getting larger and larger, and the reliability and safety of circuits have received more and more attention. In fact, chips are designed to work under a well-defined PVT (Process-Voltage-Temperature), but they may be exposed to various threats due to harsh environments or malicious attacks, such as excessive temperature or violation of design-time descriptions Expected PVT of chip characteristics, leading to denial of user service, malfunctions and even leakage of sensitive data. In fact, bugs in encryption programs can seriously compromise the security of applications, such as authentication skips in remote logins or firmware updates, or even key compromises due to data analysis errors. [0003] In order to avoid...

AI Technical Summary

Problems solved by technology

Moreover, the lack of portability, high cost, complex calibration process, and weak resistance to attacks of analog sensors make such sensors very ineffective

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