Chaotic secret communication system based on digital chaotic coding algorithm

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...

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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 to decrypt

In particular, the digital chaos security technology that is compatible with modern digital information technology and has been applied has not been reported yet.

[0006] (4) The methods and techniques for effectively generating complex and practical digital chaos ciphers have not been reported yet

However, because the traditional algorithm password is not a one-time password, the risk of being cracked is very high. In fact, some traditional algorithm passwords have been cracked

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