MCU security protection identity authentication device and method

Abstract

The invention provides an MCU security protection identity authentication device and method, and relates to the technical field of computer chip security. An authorization code generation circuit in the device generates an authentication code according to a value of an electrical parameter setting register or a value of a static random access memory with an identity identification generation function or a combination of the two values; an authorization identity checking circuit receives an authorization opening code sent by an upper computer and checks the authorization opening code; the authorization code generation circuit sends the authentication code to the upper computer after the authorization identity checking circuit checks the authorization opening code successfully; the authorization code checking circuit receives an authorization check code sent by the upper computer, checks the authorization check code according to the authorization code, and sends an authorization code checking success instruction to the upper computer after checking the authorization check code successfully; and the identity authentication checking circuit receives an identity authentication code sentby the upper computer and checks the identity authentication code to generate an authentication result in order to determine whether an MCU chip can be normally operated or locked according to the authentication result.

Description

technical field [0001] The invention relates to the technical field of computer chip security, in particular to an identity authentication device and method for MCU security protection. Background technique [0002] At present, with the development of Microcontroller Unit (MCU) technology, many smart devices using MCU have appeared in various products, such as cars with automatic driving functions, smart Internet of Things (Internet of Things) with payment functions, etc. Of Things, referred to as IOT) equipment and so on. While smart devices bring convenience to people, they also bring security risks (such as being hacked). As the core control device MCU of smart devices, its own security is also very important. However, there are currently many cracking and attack methods for MCUs, such as exhaustive cracking (at present, there is no better method for MCUs to resist exhaustive cracking), electronic detection attacks, probe attacks, and power consumption attacks. [0003...

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Problems solved by technology

In addition, since the middle and low-end MCU itself is a low-cost product,

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