Improving the security of chaotic synchronization with a ∆-modulated cryptographic technique

Liang, Xiyin; Zhang, Jiangfeng; Xia, Xiaohua

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Improving the security of chaotic synchronization with a ∆-modulated cryptographic technique

Liang, Xiyin; Zhang, Jiangfeng; Xia, Xiaohua

URI: http://hdl.handle.net/2263/10224

Date: 2008-07

Abstract:

A secure chaos-based communication with a ∆-modulated chaotic cryptographic technique is developed in this paper. We prove that a ∆-modulated feedback control of a 1-D discrete-time control system gives rise to a chaotic system. Base on this chaotic system, a modified parameter modulation scheme is proposed to improve security. As illustrated by numerical simulation, the parameter in the sender is protected by a secure cryptosystem against two popular attacks.

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