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Disturbance-based chaos method and pseudo-random sequence generation method

A pseudo-random sequence and chaotic sequence technology, applied in the chaotic field, can solve the problems of high implementation cost, restricted application, etc., and achieve the effect of high reliability and good security.

Pending Publication Date: 2021-04-02
CENT SOUTH UNIV
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Problems solved by technology

However, these methods will bring high implementation costs when the original system is a high-dimensional mapping, thus restricting the application of this technical solution

Method used

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  • Disturbance-based chaos method and pseudo-random sequence generation method
  • Disturbance-based chaos method and pseudo-random sequence generation method
  • Disturbance-based chaos method and pseudo-random sequence generation method

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Embodiment Construction

[0052] Such as figure 1 Shown is the schematic flow chart of the method of the present invention: this disturbance-based chaotic method provided by the present invention comprises the following steps:

[0053] S1. Obtain the seed system that needs to be chaotic;

[0054] S2. Select a disturbance function; Table 1 below divides the preferred disturbance functions into three different categories, linear or nonlinear functions, periodic or non-periodic functions, and bounded or unbounded functions. Among them, the linear function x and the exponential function e x The value range of tends to infinity, which is defined as unbounded, while the trigonometric functions are bounded;

[0055] Table 1 Schematic diagram of perturbation function categories

[0056]

[0057] S3. Using the disturbance function selected in step S2, external disturbance chaos, internal disturbance chaos and composite disturbance chaos are used for the seed system selected in step S1;

[0058] In the sp...

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Abstract

The invention discloses a disturbance-based chaos method. The chaos method comprises the following steps: selecting a seed system needing to be chaos; selecting a disturbance function; performing external disturbance chaos, internal disturbance chaos and composite disturbance chaos on the target function by adopting a disturbance function; and selecting an optimal scheme as a final chaos result. The invention also discloses a pseudo-random sequence generation method comprising the disturbance-based chaos method. According to the method, by introducing the disturbance mode, disturbance-based chaos for the target function is achieved, the method is suitable for one-dimensional mapping and high-dimensional mapping, the proposed multiple disturbance modes can be added to any state variable ofany dimension, and therefore a plurality of new enhanced discrete chaotic systems are constructed without losing generality; meanwhile, the method has the advantages of being high in reliability, goodin safety, low in cost and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of chaos, and in particular relates to a disturbance-based chaotic method and a pseudo-random sequence generation method. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, the chaos method has been gradually applied to people's production and life, which brings convenience to people's production and life. [0003] Based on the number of system variables, discrete chaotic maps can be divided into one-dimensional chaotic maps and high-dimensional chaotic maps. One-dimensional chaotic maps such as Logistic map, Sine map, Chebyshev map and ICMIC map are widely used in the fields of cryptography, watermarking and optimization due to their low cost and high implementation efficiency. However, the parameter space of one-dimensional chaotic map is small, the chaotic interval is narrow, and the complexity of the generated chaotic sequence i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58H04L9/00H04L9/06
CPCG06F7/582H04L9/001H04L9/0656
Inventor 孙克辉董春怡贺少波
Owner CENT SOUTH UNIV
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