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Spatiotemporal chaos secret communication method

A technology of secure communication and space-time chaos, applied in secure communication devices, digital transmission systems, electrical components, etc., can solve problems such as technical requirements and inability to meet security performance, and achieve simple algorithms, easy implementation and integration. , good attack effect

Inactive Publication Date: 2014-02-12
XIAN UNIV OF TECH
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Problems solved by technology

The existing chaotic secure communication method, the security performance can not meet the requirements of technical use

Method used

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  • Spatiotemporal chaos secret communication method
  • Spatiotemporal chaos secret communication method
  • Spatiotemporal chaos secret communication method

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The overall working process of the space-time chaos secure communication method of the present invention is to divide the spatial state generated by the one-way coupling mapping lattice system into odd and even-dimensional state vectors as the key sequence, and the key and the plaintext undergo N times of shift iterations to obtain the ciphertext Signal, the ciphertext signal simultaneously drives the one-way coupling image lattice system of the sending end and the receiving end to realize synchronization and modulate the state of the chaotic system at the next moment; the encrypted signal is received by the receiving end through the public channel, and the one-way coupling image grid system of the receiving end The system can be fully synchronized under the same driving effect as the lattice system at the sending end; finally, the sync...

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Abstract

The invention discloses a spatiotemporal chaos secret communication method. The spatiotemporal chaos secret communication method comprises the steps that (1), the states of a space lattice of a one-way coupling image lattice system at a sending end are divided into odd-dimensional states and even-dimensional states, (2) displacement mapping iteration is carried out on a plaintext frame and vectors in the odd-dimensional states N times, (3) a transmission signal is obtained, (4) a driving signal of the one-way coupling image lattice system at the sending end is calculated, (5) a synchronizing signal of the one-way coupling image lattice system at a receiving end is obtained, (6) the displacement mapping iteration is decoded to obtain a decryption frame corresponding to the plaintext frame, and then spatiotemporal chaos secret communication is achieved. According to the spatiotemporal chaos secret communication method, signals are coded and decoded by means of spatiotemporal chaos, the spatial state values of the one-way coupling image lattice system are grouped, iteration and aliasing of a plaintext secret key are carried out, better confidentiality is achieved, the method can be achieved easily by means of a microprocessor, integration can be achieved easily.

Description

technical field [0001] The invention belongs to the technical field of secure communication, and relates to a space-time chaos secure communication method. Background technique [0002] The emergence and gradual popularization of computers have made the era increasingly informationized and the society increasingly networked, and the issue of information security and confidentiality has become more and more important. Due to its basic characteristics such as sensitivity to initial values, internal randomness, and broadband power spectrum, chaos has potential advantages in anti-interference, interception rate, signal concealment, and confidentiality, and has become a research hotspot in the field of secure communication. . With the successful application of chaotic communication to commercial optical fiber channels and higher transmission rates, the research on chaotic communication is gradually developing towards practical application. At the same time, research on the secu...

Claims

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Application Information

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IPC IPC(8): H04L9/00
Inventor 任海鹏白超
Owner XIAN UNIV OF TECH
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