MCU security protection identity authentication device and method

An identity authentication device and security protection technology, which is applied in the field of MCU security protection identity authentication devices, can solve problems such as not being suitable for low-cost products

CN107977568AActive Publication Date: 2018-05-01RENESAS SEMICON DESIGN BEIJING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-05-01

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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.
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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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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] In the embodiment of the present invention, the following concepts mentioned are explained as follows:

[0055] Authentication: Authentication is to let the verifier determine that the other party it is communicating with has the legal authority to communicate with it. Identity authentication is the first step for a user to gain access to an MCU, computer or network system, and it is also the first line of defense for information security.

[0056] Bru...