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A Stream Cipher Key Control Method Fused with Neural Network and Chaotic Map

A technology of chaotic mapping and neural network

Active Publication Date: 2011-11-30
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the lack of an initial value update mechanism and poor security performance of the existing stream cipher key control methods, the present invention provides a stream fused neural network and chaotic map that effectively implements chaotic initial value update and enhances the application security of stream ciphers. Cryptographic key control method

Method used

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  • A Stream Cipher Key Control Method Fused with Neural Network and Chaotic Map
  • A Stream Cipher Key Control Method Fused with Neural Network and Chaotic Map

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings.

[0058] refer to Figure 2 ~ Figure 4 , a stream cipher key control method that integrates neural network and chaotic map, setting the neural network weight synchronization model with the same parameters for the sender and the receiver and three chaotic map functions with the same initial value respectively, setting the sender Having the same initial value of the chaotic function as the receiver, the stream cipher key control method includes the following steps:

[0059] (1) Determine the mixed key stream generator based on 3 chaotic maps:

[0060] XOR the random bits generated by the three chaotic maps to get the final random sequence, namely:

[0061] Mixed chaos map sequence = (chaos map 1 sequence) XOR (chaos map 2 sequence) XOR (chaos map 3 sequence);

[0062] Among them, the initial values ​​of the chaotic map 1 sequence, the chaotic map 2 sequence, and the cha...

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Abstract

The invention provides a stream cipher key control method for fusing a neural network with chaotic mappings. A sending party and a receiving party are configured to have neural network weight synchronization models with same parameters and three chaotic mapping functions with the same initial value, and the sending party and the receiving party are set to have the same initial value of the chaotic functions. The method comprises the following steps: (1) determining a hybrid stream key generator based on three chaotic mappings; and (2) realizing a chaotic function initial value update mechanism based on neural network weight synchronization. The method provided by the invention can be used for updating the chaotic initial values and strengthening the safe application of stream ciphers.

Description

technical field [0001] The invention relates to the technical field of stream ciphers, in particular to a stream cipher key control method. Background technique [0002] Chaotic cryptography is a novel information encryption method gradually developed in the process of cryptography continuously drawing on the research results of other disciplines. Since chaos theory developed from mathematics, physics, biology and other fields in the 1960s, and was established as a new discipline, due to its similarities with cryptographic systems such as parameter sensitivity, people began to Watch for the combination and intersection of the two. Shannon, the originator of information theory, proposed two basic principles in cryptography to guide the design of ciphers: Diffusion and Confusion. Diffusion refers to spreading the redundancy of the plaintext into the ciphertext, thereby hiding the statistical structure of the plaintext, that is, to make each bit of the plaintext affect as man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/00
Inventor 陈铁明潘小明宣以广江颉陈波
Owner ZHEJIANG UNIV OF TECH
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