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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 2, May 2009

Issue on Computer Science

Page(s): 103-107

Audio encryption using higher dimensional chaotic map

R.Gnanajeyaraman, K.Prasadh, Ramar

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Abstract

In Chaotic the properties of sensitivity to initial conditions, control parameters and pseudo-randomness chaotic maps have been widely used in data encryption recently. The chaotic based cryptosystems are suitable for large-scale data encryption such as images, videos or audio data. This paper propose a novel higher dimensional chaotic system for audio encryption, in which variables are treated as encryption keys in order to achieve secure transmission of audio signals. Since the highly sensitive to the initial condition of a system and to the variation of a parameter, and chaotic trajectory is so unpredictable. As a result we obtain much higher security. The higher dimensional of the algorithm is used to enhance the key space and security of the algorithm. The security analysis of the algorithm is given. The experiments show that the algorithm has the characteristic of sensitive to initial condition, high key space; digital audio signal distribution uniformity and the algorithm will not break in chosen/known-plaintext attacks.

Index Terms

Audio encryption; Chaos; Security; Higher dimensional chaotic maps

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