Method for applying chaotic synchronization self keeping property in secret communication

A technology for chaotic synchronization and secure communication, which is applied in the field of communication and can solve the problems of unpractical application and restricting chaotic secure communication.

Inactive Publication Date: 2007-10-10
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

At present, many achievements have been made in the research of chaos control and synchronization methods, and the chaos secure communication has also developed to a certain extent, but it has not been practically applied in the field of chaos communication.
First of all, whether the chaotic secure communication system works normally and effectively depends on whether there is a good synchronization system. A good synchronization system requires an accurate chaotic sy

Method used

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  • Method for applying chaotic synchronization self keeping property in secret communication
  • Method for applying chaotic synchronization self keeping property in secret communication
  • Method for applying chaotic synchronization self keeping property in secret communication

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] Referring to Fig. 1, the present invention first extracts the chaotic signal V and the chaotic synchronous control signal U for encrypting plaintext information in the chaotic circuit of the transmitting end of the communication system; the encryption transformation C module adopts a convolution algorithm to use the chaotic signal V to encrypt the plaintext information ; Since the receiving end can demodulate the plaintext information only when the chaotic circuits at the transmitting end and the receiving end are in a synchronous state, and the chaotic synchronous control signal and the encrypted ciphertext signal are wide-spectrum signals similar to white noise, the chaotic synchronous system The requirements for the control signal are high and cannot have a large attenuation. Therefore, the next analysis is to ensure that the chaotic system is in a s...

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Abstract

Since chaos synchronization system possesses self-hold characteristic, the invention uses the principle of time-sharing sending by using the said characteristic, i.e., in time-sharing mode, cryptograph signal and chaos synchronization signal are sent out. As long as time for sending cryptograph signal is smaller than self-hold time of chaos synchronization system, chaos synchronization control signal is sent out in succession. Thus, it is guaranteed that reliable information transmission is accomplished under condition that chaos system keeps synchronization.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to an application method of the chaotic synchronous self-maintaining characteristic in secure communication. Background technique [0002] The research on chaotic secure communication originated in the early 1990s in the world, and has gone through more than ten years. Due to the unpredictable characteristics of chaotic signal itself, chaotic secure communication has a very high degree of confidentiality. It has become one of the hot spots of attention and research in the field of information science. At present, many achievements have been made in the research of chaos control and synchronization methods, and some developments have been made in chaos secure communication. However, it has not been practically applied in the field of chaos communication. First of all, whether the chaotic secure communication system works normally and effectively depends on whether there is a go...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04K1/02
Inventor 兀旦晖杨帆谭欣
Owner SHAANXI UNIV OF SCI & TECH
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