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Electronic device and software updating method

A technology of electronic devices and software, applied in the direction of safety communication devices, computer safety devices, electrical components, etc.

Pending Publication Date: 2021-07-09
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second memory circuit is used for storing an original software

Method used

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  • Electronic device and software updating method
  • Electronic device and software updating method
  • Electronic device and software updating method

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Embodiment Construction

[0026] All terms used herein have their ordinary meanings. The definitions of the above-mentioned terms in commonly used dictionaries, and the use examples of any terms discussed here in the content of this case are only examples and should not limit the scope and meaning of this case. Likewise, the practicable aspects of this application are not limited to the embodiments shown in this specification.

[0027] As used herein, the term "circuit" can be a device that is connected in a certain way to process signals by at least one transistor and / or at least one active and passive components. As used herein, the term "and / or" includes any combination of one or more of the associated listed items.

[0028] In this document, terms such as first, second and third are used to describe and identify various elements. Therefore, a first element herein may also be referred to as a second element without departing from the original meaning of the present application.

[0029] In some e...

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PUM

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Abstract

The electronic device comprises a first memory circuit, a second memory circuit and a processing circuit. The first memory circuit is used for storing a secret key. The second memory circuit is used for storing original software. The processing circuit is used for: receiving data to be updated, wherein the data to be updated comprises software to be updated and a digital signature; executing a digest algorithm on the software to be updated to generate a first digest; decrypting the digital signature by using the key to generate a second abstract; and comparing the first abstract with the second abstract to confirm whether the original software is updated to the software to be updated.

Description

technical field [0001] This case is about a software update method, more specifically, a software update method and an electronic device using data encryption and decryption and digital signature. Background technique [0002] In the application of embedded systems, developing software according to customer needs is an important task. In the existing software update method, various check methods (such as parity check, redundancy check, etc.) can be used to detect whether there is a data transmission error during the software update process, so as to ensure that the software can be correctly downloaded. renew. However, the above-mentioned verification method cannot detect whether someone tampers with the software in advance, which brings certain risks to the client's device. Contents of the invention [0003] In some embodiments, the electronic device includes a first memory circuit, a second memory circuit and a processing circuit. The first memory circuit is used for s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/65H04L9/08H04L9/30
CPCG06F8/65H04L9/0863H04L9/0894H04L9/3066G06F21/57H04L9/3239H04L9/3247G06F21/572H04L9/0825
Inventor 郑海潮纪仕秦吴昊澄吴长鸿林能贤黄伟信
Owner REALTEK SEMICON CORP