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Data encryption/decryption method and device, and data transmission system

A data encryption and data decryption technology, applied in the field of data processing, can solve the problem of low data protection security, achieve the effect of improving security and increasing the difficulty of cracking

Pending Publication Date: 2021-08-31
SEEED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a data encryption method applied to embedded systems in view of the low security defect of data protection existing in the prior art

Method used

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  • Data encryption/decryption method and device, and data transmission system
  • Data encryption/decryption method and device, and data transmission system

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Embodiment Construction

[0039] 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.

[0040] figure 1 It is a flowchart of Embodiment 1 of the data encryption method applied to an embedded system in the present invention, and the data encryption method of this embodiment includes the following steps:

[0041] Step S11. Obtain the original data to be encrypted;

[0042] Step S12. Perform FEC encoding on the original data to obtain intermediate data;

[0043] Step S13. Generate random data, and fill the random data into the intermediate data ac...

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Abstract

The invention relates to a data encryption / decryption method and device, and a data transmission system. The data encryption method comprises the following steps of: acquiring original data to be encrypted; performing FEC coding on the original data to obtain intermediate data; and generating random data, and filling the random data into the intermediate data according to a preset rule to generate a final ciphertext. The data decryption method comprises the following steps of: acquiring a received ciphertext; selecting random data from the ciphertext according to a preset rule, and discarding the random data to obtain intermediate data; and performing FEC decoding on the intermediate data to obtain original data. By implementing the data encryption / decryption method and device, the random data is added into the data after FEC coding to serve as the final ciphertext, and the final ciphertext is transmitted. The cracking difficulty is increased, the security of the algorithm is greatly improved, and the methods are particularly suitable for the MCU with limited computing power.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a data encryption / decryption method, device and data transmission system. Background technique [0002] Electronic products often have security requirements for program protection and data protection, but due to cost and MCU performance limitations, embedded systems often cannot apply mainstream encryption algorithms such as AES and RSA with high security, so they can only use XOR with high computing efficiency However, the problem brought by this encryption method is that the security is not high, and it is easy to use the method of comparing and analyzing multiple sets of data to crack. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a data encryption method applied to an embedded system for the defect of low data protection security existing in the prior art. [0004] The technical solution adopted by the present in...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L29/06H04L1/00G06F21/60G06F7/58
CPCH04L9/0869H04L63/0428H04L1/004G06F21/602G06F7/588
Inventor 廖巍巍宋政斌
Owner SEEED TECH
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