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A multi-level security memory chip architecture

A technology for secure storage and memory chips, applied in computer security devices, program control, instruments, etc., can solve problems such as product copying and plagiarism, program and data theft, developer loss, etc., to achieve the effect of enhancing data read/write efficiency

Active Publication Date: 2021-06-29
杭州欣晓信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes a lot of manpower and material resources to invest in the research and development of embedded systems, but its products are often easily copied and plagiarized
Programs and data are stolen, causing great losses to developers

Method used

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  • A multi-level security memory chip architecture
  • A multi-level security memory chip architecture

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention is not limited to the following description.

[0023] Such as figure 1 As shown, the memory chip framework of the present invention includes a micro control unit and a memory module.

[0024] The micro control unit 1 is an MCU chip, including an access authentication module 1-1 and a data encryption / decryption unit 1-2.

[0025] The storage module includes two off-chip Flash storage chips, one of which is used as a common storage area 2 and the other as a safe storage area 3; the common storage area is divided into a public area 2-1 and a verification area 2-2 according to addresses.

[0026] The micro-control unit 1 adopts the SPI bus to connect the described memory module, and the peripheral equipment 4 is processed by the micro-control unit 1 through the GPIO bus to read and write data requests to the ...

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PUM

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Abstract

The invention discloses a multi-level security storage chip framework. Aiming at the different security requirements for stored programs and data in the embedded system, the invention includes a micro control unit and a storage module. The micro control unit is an MCU chip, including an access authentication module and a data encryption / decryption unit. The storage module includes two off-chip Flash memory chips, one of which is used as a common storage area, and the other is used as a safe storage area; the common storage area is divided into a public area and a verification area according to the address. The micro control unit and the storage module are connected by SPI bus. The reading and writing modes of the secure memory chip are divided into three modes according to the security level from low to high: normal mode, authentication mode and ciphertext mode. The storage chip framework of the present invention provides different safe storage modes and improves the working efficiency of embedded systems with different confidentiality requirements for stored data.

Description

technical field [0001] The invention belongs to the field of chips and information security, in particular to the field of embedded memory chips, and relates to a multi-level security memory chip framework. Background technique [0002] Embedded devices are widely used in industrial manufacturing for their excellent adaptability, reliability and specificity. Embedded based electronic devices come in a wide variety. With the development of science and technology, the current industrial production is becoming more and more intelligent and large-scale. The types of functions implemented by embedded devices are becoming more and more abundant, and people's requirements for them are also increasing. This correspondingly increases the amount of code and data required by embedded devices. Therefore, in many embedded devices, additional off-chip memory chips are required to store programs and data. [0003] For the storage chip, in addition to realizing the preservation of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F21/74G06F21/79G05B19/042
CPCG05B19/0423G06F21/602G06F21/74G06F21/79G06F2221/2113
Inventor 姜显扬王德富陈木市徐欣
Owner 杭州欣晓信息技术有限公司