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Method for chaotic encryption of multi-path image digital information

A digital information and chaotic encryption technology, which is applied in image communication, digital video signal modification, digital transmission system, etc., can solve problems such as difficulty in realizing self-synchronization, insufficient confidentiality of low-dimensional chaotic systems, etc., and achieve high restoration effect

Active Publication Date: 2014-06-25
GUANGDONG UNIV OF TECH
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Problems solved by technology

Studies have shown that the secrecy of low-dimensional chaotic systems is not enough, and it is difficult to achieve self-synchronization

Method used

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  • Method for chaotic encryption of multi-path image digital information
  • Method for chaotic encryption of multi-path image digital information
  • Method for chaotic encryption of multi-path image digital information

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Embodiment

[0052] Embodiment: the hardware configuration of the method for the chaotic encryption of 3-way image digital information: use two FPGA boards of XUP Virtex-II as digital information encryptor and digital information decryptor respectively, adopt two FPGA development boards to set up a Server-Client Model, establish the respective sockets of Server and Client as the basis of communication between the two parties. The FPGA board of the chaotic encryptor of the multi-channel drive system acts as the client end and is responsible for sending the ciphertext information; the FPGA board of the multi-channel chaos response system decryptor serves as the server end and is responsible for receiving the transmitted ciphertext information. In addition, the digital information transmission channel adopts the datagram Socket type transmission, which corresponds to the connectionless UDP service application, and adopts the UPD protocol of the transport layer. When the server receives the rel...

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Abstract

The invention discloses a method for chaotic encryption of multi-path image digital information. The method comprises the following steps that an n-dimension discrete chaotic system kinetic equation is established; according to the seven-dimension chaotic system kinetic equation, n-m+1 real number chaotic sequences generated through iteration are rounded and then converted into binary digital information through a digital information encipher, and then XOR operation is conducted on the binary digital information and digital information of n-m+1 images, so that cryptograph values of the n-m+1 images are obtained respectively; the cryptograph values are transmitted to a digital information decipher through a digital transmission channel. According to the method, three-path image information is encrypted simultaneously just through one seven-dimension chaotic system; due to the fact that the cascading closed loop principle is adopted, a sending end system and a receiving end system have identical drive signals, strict synchronization can be realized, the influence of modulation of the size of useful information is avoided, and decrypted information has a high reduction degree under the condition that the parameters of the sending end are matched with the parameters of the receiving end.

Description

technical field [0001] The invention relates to an image chaotic encryption method, in particular to a chaotic encryption method for multi-channel image digital information. Background technique [0002] How to generate chaos in continuous or discrete time systems has become a frontier hot topic in the fields of natural science and engineering applications in recent years. In 1994, American scientist Schiff and others published an article in the well-known international journal Nature and proposed the concept of chaos anti-control for the first time in the world. Two years later, in 1996, the research on anti-control problems of discrete-time systems made substantial progress internationally. The anti-control method of discrete-time system is based on the existence criterion of chaos, and a general design criterion with universality and applicability is proposed, such as the successful Chen-Lai algorithm and Wang-Chen algorithm, etc., so that in Theoretically, it solves th...

Claims

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Application Information

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IPC IPC(8): H04N1/32H04N19/46H04L9/00
Inventor 郑汉忠禹思敏徐向前王倩雪
Owner GUANGDONG UNIV OF TECH
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