A New Chaos-Based Image-Encryption and Compression Algorithm

We propose a new and efficient method to develop secure image-encryption techniques. The new algorithm combines two techniques: encryption and compression. In this technique, a wavelet transform was used to decompose the image and decorrelate its pixels into approximation and detail components. The...

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Veröffentlicht in:Journal of Electrical and Computer Engineering Jg. 2012; H. 1; S. 130 - 140
Hauptverfasser: Al-Maadeed, Somaya, Al-Ali, Afnan, Abdalla, Turki
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Hindawi Limiteds 01.01.2012
Hindawi Publishing Corporation
John Wiley & Sons, Inc
Wiley
Schlagworte:
Algorithms
Approximation
Communications networks
Compressing
Computer engineering
Data encryption
Decomposition
Encryption
Mathematical analysis
Methods
Specifications
Studies
Wavelet transforms
Wireless communications
ISSN:2090-0147, 2090-0155
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:We propose a new and efficient method to develop secure image-encryption techniques. The new algorithm combines two techniques: encryption and compression. In this technique, a wavelet transform was used to decompose the image and decorrelate its pixels into approximation and detail components. The more important component (the approximation component) is encrypted using a chaos-based encryption algorithm. This algorithm produces a cipher of the test image that has good diffusion and confusion properties. The remaining components (the detail components) are compressed using a wavelet transform. This proposed algorithm was verified to provide a high security level. A complete specification for the new algorithm is provided. Several test images are used to demonstrate the validity of the proposed algorithm. The results of several experiments show that the proposed algorithm for image cryptosystems provides an efficient and secure approach to real-time image encryption and transmission.
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ISSN:2090-0147
2090-0155
DOI:10.1155/2012/179693