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A communication encryption method and a communication decryption method

An encryption method and signal technology, which can be used in secure communication devices, secure communication through chaotic signals, digital transmission systems, etc., can solve the problems of low security at the sending end and the receiving end, and achieve the effect of good application value.

Inactive Publication Date: 2018-12-18
TAIYUAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] The problems in the existing technology are as follows: the security of the sending end and the receiving end of the single system structure is low; the system form is fixed, and the system will not change during the confidential communication process; the encryption method of the sending end and the receiving end is simple, only using chaotic A method in masking, chaotic modulation, chaotic keying to encrypt a signal

Method used

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  • A communication encryption method and a communication decryption method
  • A communication encryption method and a communication decryption method
  • A communication encryption method and a communication decryption method

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described in more detail below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] refer to figure 1 , figure 1 It is a schematic flowchart of a communication encryption method provided by the present invention. The steps of the method include:

[0030] S110: Start the Lorenz chaotic system to generate a first chaotic signal.

[0031] S120: Modulate the unified chaotic system parameters with the first chaotic signal generated by the Lorenz chaotic system, and run the unified chaotic system to generate the second chaotic signal.

[0032] S130: Encrypt the original communication signa...

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Abstract

The invention discloses a communication encryption method and a communication decryption method. By means of chaotic modulation and chaotic concealment, so that multi-level encryption is realized, byusing the characteristics of the unified chaotic system, the parameters of the system are modulated to make the unified chaotic system switch between different kinds of chaotic systems, which makes the system more complex. At the same time, the synchronization between the unified chaotic system and the sender is realized by using the encrypted signal, and the decrypted signal is obtained by usingthe synchronized system and the decryption process opposite to that of the sender. The method of the invention can be used for the secrecy communication in the field of national defense communication,and can also be applied to the civil secrecy communication service industry. The pseudo-random property of the chaotic system makes the secrecy signal disguised as the random white noise in reality,having good application value.

Description

technical field [0001] The invention relates to the field of secure communication, in particular to a communication encryption method and a communication decryption method. Background technique [0002] Chaos refers to the general term for the uncertain behavior exhibited in deterministic systems. Due to the complex properties of self-similarity, initial value sensitivity, positive Lie exponent and pseudo-randomness, chaotic signals have attracted extensive attention. Especially because the chaotic signal is pseudo-random, similar to white noise in reality, it is difficult to be deciphered by secret stealers. At present, the existing chaotic secure communication mechanism has a simple encryption method and a fixed system form, and the behavior of the system can be inferred by phase space reconstruction technology. [0003] The problems in the existing technology are as follows: the security of the sending end and the receiving end of the single system structure is low; the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L27/00H04L29/06
CPCH04L9/001H04L27/001H04L63/0428
Inventor 张昊
Owner TAIYUAN UNIV OF TECH
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