Design and Implementation of Image Encryption Algorithm Using Chaos

Images are widely used in diverse areas such as; medical, military, science, engineering, art, advertising, entertainment, education, as well as training, increasing the use of digital techniques for transmitting and storing images. So, maintaining the confidentiality and integrity of images has bec...

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Bibliographic Details
Published in:International journal of advanced computer research 2014-06, Vol.4 (2), p.660-660
Main Authors: Rani, Sandhya M H, Sudha, K L
Format: Article
Language:English
Subjects:
Algorithms
Chaos theory
Correlation
Encryption
Entropy
Image transmission
Pixels
Online Access:Get full text
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Summary:Images are widely used in diverse areas such as; medical, military, science, engineering, art, advertising, entertainment, education, as well as training, increasing the use of digital techniques for transmitting and storing images. So, maintaining the confidentiality and integrity of images has become a major concern. This makes encryption necessary. The pixel values of neighbouring pixels in a plain image are strongly correlated. The proposed algorithm breaks this correlation increasing the entropy. Correlation is reduced by changing the pixel position, which is called confusion. The proposed method of encryption algorithm is based on chaos theory. The plain-image is divided into blocks and then performs three levels of shuffling using different chaotic maps. The experimental result demonstrates that the proposed algorithm can be used successfully to encrypt/decrypt the images with the secret keys. The analysis of the algorithm also shows that the algorithm gives larger key space and a high key sensitivity. The encrypted image has good encryption effect, information entropy and low correlation coefficient.
ISSN:2249-7277
2277-7970