Wireless sensor network-oriented mutual interference compound chaos stream cipher implementation method

A technology of wireless sensor and implementation method, which is applied in wireless communication, transmission system, digital transmission system, etc., and can solve the problems of poor safety and practicality, poor chaotic characteristics, etc.

Active Publication Date: 2012-08-01
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0016] In order to overcome the shortcomings of poor chaotic characteristics and poor security and practicability of the existing chaotic stream cipher implementation methods, the present...

Method used

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  • Wireless sensor network-oriented mutual interference compound chaos stream cipher implementation method
  • Wireless sensor network-oriented mutual interference compound chaos stream cipher implementation method
  • Wireless sensor network-oriented mutual interference compound chaos stream cipher implementation method

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings.

[0062] refer to figure 2 , a wireless sensor network-oriented mutual interference composite chaotic flow cipher implementation method, the mutual interference composite chaotic flow cipher implementation method includes the following steps:

[0063] 1) Transform the classic Logistic mapping and Tent mapping into discrete functions on the integer field, so that the chaotic sequence integer model can be realized on the sensor nodes of the wireless sensor network that supports integer computing;

[0064] 2) On the basis of the integer chaotic function, construct three Logistic chaotic maps with different initial values ​​as the main chaotic system, and construct a Tent chaotic map as the chaotic controller;

[0065] 3) said 1 Tent chaos controller realizes mutual interference with 3 Logistic chaos mappings, namely the chaos iteration process of the Tent controller and t...

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Abstract

The invention relates to a wireless sensor network-oriented mutual inference compound chaos stream cipher implementation method, which comprises the following steps of: (1) converting typical Logistic mappings and Tent mapping into a discrete function on an integer field and enabling a chaos sequence integer model to be implemented on a sensing node of a wireless sensor network which supports integer computation; (2) on the basis of an integer chaos function, establishing three Logistic chaos mappings with different initial values as a main chaos system, and then establishing a Tent chaos mapping as a chaos controller; and (3) enabling the chaos controller to mutually interfere with the three Logistic mappings, and simultaneously, enabling the Tent chaos controller to be compounded with the three Logistic chaos mappings to form a safer random cipher stream with longer period to further form a complete chaos stream cipher. The wireless sensor network-oriented mutual interference compound chaos stream cipher implementation method has favorable chaos characteristic and enhanced safety and practicability.

Description

technical field [0001] The invention relates to a method for realizing a chaotic stream cipher. Background technique [0002] The original meaning of chaos refers to the state of disorder and chaos (translated from English Chaos), which is a certain phenomenon in nonlinear, but it also shows a certain pseudo-randomness. Some basic characteristics of the chaotic system can just meet the basic requirements of secure communication and cryptography: the determinism of the chaotic dynamic equation ensures the reliability of the communication parties in the process of sending and receiving or encryption and decryption; the ergodicity of the chaotic orbit just satisfies the Shannon The first basic principle of cryptographic system design proposed by Shannon, that is, the principle of diffusion; chaos parameters and initial value sensitivity, just meet the second basic principle of cryptographic system design proposed by Shannon, namely, the principle of confusion. [0003] For thi...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04W12/02
Inventor 陈铁明葛亮蔡家楣
Owner ZHEJIANG UNIV OF TECH
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