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Power data encryption method and device based on chaotic sequence and national cryptographic algorithm

A chaotic sequence, power data technology, applied in encryption devices with shift registers/memory, secure communication through chaotic signals, secure communication devices, etc., can solve the problems of high security risks and low proportion of information security reinforcement measures, and achieve Improve safety, achieve autonomous controllability, and reduce computing time

Active Publication Date: 2021-02-26
HUBEI INFOTECH SYST TECH CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The current grid power data use information security reinforcement measures are not high, and generally use international general encryption algorithms such as MD5, RSA, and face high security risks

Method used

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  • Power data encryption method and device based on chaotic sequence and national cryptographic algorithm
  • Power data encryption method and device based on chaotic sequence and national cryptographic algorithm
  • Power data encryption method and device based on chaotic sequence and national cryptographic algorithm

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Embodiment Construction

[0022] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

[0023] refer to figure 1 , in the first aspect of the present invention, there is provided a power data encryption method based on chaotic sequence and national secret algorithm, including the following steps: S101. Obtain the power data to be encrypted and serialize it; Perform wavelet transformation on the data to obtain several high-frequency sequences and several low-frequency sequences, and denote the high-frequency sequence and the low-frequency sequence as the first sequence and the second sequence respectively; S102. Randomly select two one-dimensional chaotic maps, and analyze the one-dimensional perturbing the chaotic map; generating respective sequences according to the two one-dimensional chaotic maps and their perturbed cha...

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Abstract

The invention relates to a power data encryption method and device based on a chaotic sequence and a national cryptographic algorithm. The method comprises the following steps: obtaining power data tobe encrypted and serializing the power data to be encrypted; performing wavelet transformation on the serialized power data to obtain a plurality of high-frequency sequences and a plurality of low-frequency sequences, and marking the high-frequency sequences and the low-frequency sequences as a first sequence and a second sequence respectively; randomly selecting two one-dimensional chaotic mappings, and disturbing the one-dimensional chaotic mappings; combining the original one-dimensional chaotic mapping and the disturbance chaotic mapping, and selecting two candidate chaotic sequences withthe maximum Lyapunov exponent as second chaotic sequences; modulating and combining the first sequence and the second sequence according to the second chaotic sequence, a sampling rate and an SM4 algorithm to obtain a spread spectrum sequence; and performing signature or verification on the spread spectrum sequence by using an SM2 algorithm. According to the method, the randomness and the uniformity of the ciphertext are improved through wavelet transform and the chaotic sequence, and the security of the data is further improved through a cryptographic algorithm.

Description

technical field [0001] The invention belongs to the field of power data and encryption, in particular to a power data encryption method and device based on a chaotic sequence and a national secret algorithm. Background technique [0002] With the development of the power grid towards intelligence, the application of communication electronic equipment in the power grid is also more extensive. As an important part of the power transmission and distribution system, smart substations need to implement more and more communication and control functions. The continuous progress of computer and communication technology has also promoted the digitization, informatization and intelligent development of substations. The continuous development of smart grid has broadened the scope of power security technology, and communication technology has become more and more widely used in the power field. Therefore, information security has gradually become an important part of power security. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L9/06H04L27/00H04L29/06H04B1/713
CPCH04B1/713H04L9/001H04L9/065H04L27/001H04L63/0428
Inventor 易国华程国兵易成君杨军徐辉
Owner HUBEI INFOTECH SYST TECH CO LTD
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