Chaotic secret communication system based on digital chaotic coding algorithm

A coding algorithm and technology of chaotic ciphers, which are applied in the field of secure communication systems, can solve problems such as digital chaotic cipher methods and technologies that have not been reported, and effectively generate complex and unsolved problems

Active Publication Date: 2013-09-11
SOUTHEAST UNIV
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Problems solved by technology

[0004] (2) In the current chaotic security research, chaotic waves are transmitted in the channel. Because chaotic waves are sensitive to external factors such as noise, the technology of using chaos synchronization for information decryption in long-distance information transmission has not yet been solved.
[0005] (3) There are no secure communication schemes and technologies that use digital chaotic signals to encrypt digital information and use chaotic synchronization technology...

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  • Chaotic secret communication system based on digital chaotic coding algorithm
  • Chaotic secret communication system based on digital chaotic coding algorithm
  • Chaotic secret communication system based on digital chaotic coding algorithm

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Embodiment Construction

[0064] In order to describe the digital chaos security technology more clearly, then the figure introduces the principle and method of the digital chaos security technology in detail.

[0065] figure 1 It is a full-duplex two-way digital chaos security communication system of the invention technology. The information sender and the receiver each have two (same or different) chaotic networks for chaotic encryption and chaotic decryption. The encryption and decryption passwords of one party are generated by different chaotic networks, but the corresponding pair of both parties (such as figure 1 14 and 17 and 15 and 16) Encryption and decryption chaotic networks must have the same topology and dynamics. encryption function F i (i=1,2) satisfy F i f i -1 =I. The digital information M is encrypted by the chaotic cipher through the F function operation and the ciphertext C is transmitted to the receiving end through the channel (including digital multiplexer, modulator, demodu...

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Abstract

A chaotic secret communication system based on a digital chaotic coding algorithm comprises (1) a channel used for enabling an information sending end A to be communicated with an information receiving end B and (2) digital chaotic networks connected with the channel and used for generating chaotic numerical codes. A function g1 is generated through codes of chaotic coding according to the selected chaotic numerical codes with certain lengths from the numerical codes generated in the digital chaotic networks and converted to a chaotic code k1(t), wherein an equation that k1(t)=g1(X, p) is satisfied. The digital chaotic networks are characterized in that (1) the digital chaotic networks are identical in topologic and dynamics structures, driven by common signals and in a chaotic synchronic state, the digital chaotic networks comprise a complex chaotic network which is of a random topologic structure, a regular network, a random network, a small-world network, a freedom scaling network and a module network; (2) the information sending end A is used for complex chaotic networks which generate the chaotic numerical codes and a kinetic equation is decrypted by a differential kinetic equation.

Description

1. Technical field: [0001] The invention relates to the technical field of electronic information security, in particular to a security communication system and method. 2. Background technology: [0002] In recent years, secure communication based on chaos synchronization has aroused great international research interest. People have done a lot of theoretical and experimental research on chaotic secure communication, and carried out high-speed long-distance (120km) experiments in commercial optical fiber communication networks. In the chaotic secure communication scheme, the transmitted information is covered by the chaotic signal at the sending end, and the chaotic signal is removed and decrypted at the receiving end by using chaos synchronization. Because the chaotic dynamics is extremely sensitive to the initial value conditions of the system and the dynamic parameters of the system, it is extremely difficult to reconstruct and reproduce the chaotic dynamics, so it is di...

Claims

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Application Information

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IPC IPC(8): H04L9/00
Inventor 黄洪斌邱灿灿
Owner SOUTHEAST UNIV
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