A decryption method and device

A kind of dense particle and task cycle technology, applied in the direction of instruments, single input port/output port register, time register, etc., can solve the problems of large delay and high processor load rate, achieve fast response and optimize time complexity Degree, the effect of reducing the load rate

Active Publication Date: 2021-08-24
天津经纬恒润科技有限公司
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Problems solved by technology

[0004] In view of this, the present invention provides a decryption method and device, without changing the hardware of the RKE system, to solve the problem that the processor load rate of the receiver in the prior art is high, and often occurs in response to other task requests. delay problem

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  • A decryption method and device
  • A decryption method and device

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Embodiment Construction

[0031] 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.

[0032] In the present invention, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phras...

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Abstract

The present invention provides a decryption method and device. The method includes: determining N task cycles, where N is an integer greater than 1; and sequentially executing the corresponding stages of the decryption task in the N task cycles to obtain plaintext data, wherein the decryption task includes: At least two decryption subtasks executed sequentially, the decryption task can be divided into at least two stages in sequence, and one stage of the decryption task corresponds to one task period. Based on the decryption method and device disclosed in the present invention, on the premise of not changing the hardware of the RKE system, the load rate of the processor in the decryption process is reduced, and a large delay in responding to other task requests can be avoided.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a decryption method and device. Background technique [0002] Due to the convenience of the Remote Keyless Entry (RKE) system, the system has been favored by more and more users, and more than 70% of new cars on the market have installed the RKE system. [0003] In order to improve the security of the RKE system, the design of the decryption algorithm becomes more and more complex, and correspondingly, the decryption time for the ciphertext data is also longer and longer. In addition, due to cost considerations, the receiver of the RKE system is only equipped with one processor, such as only one CPU (Central Processing Unit, central processing unit), which leads to a high load rate of the processor, and often responds to other task requests There is a problem with a large delay. Wherein, the load rate of the processor refers to: the ratio of the duration of the p...

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Application Information

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IPC IPC(8): G07C9/00G07C9/33
Inventor 徐江乐孙霖霖
Owner 天津经纬恒润科技有限公司
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