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An Improved Cryptography Scheme for Secure Image Communication

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International Journal of Computer Applications
© 2013 by IJCA Journal
Volume 67 - Number 18
Year of Publication: 2013
Authors:
Bhaskar Mondal
Akash Priyadarshi
D. Hariharan
10.5120/11496-7206

Bhaskar Mondal, Akash Priyadarshi and D Hariharan. Article: An Improved Cryptography Scheme for Secure Image Communication. International Journal of Computer Applications 67(18):23-27, April 2013. Full text available. BibTeX

@article{key:article,
	author = {Bhaskar Mondal and Akash Priyadarshi and D. Hariharan},
	title = {Article: An Improved Cryptography Scheme for Secure Image Communication},
	journal = {International Journal of Computer Applications},
	year = {2013},
	volume = {67},
	number = {18},
	pages = {23-27},
	month = {April},
	note = {Full text available}
}

Abstract

The traditional chaos algorithm is based on the logistic maps and has some drawbacks. In order to enhance the security, improved chaos system is used. It is based on location Transform and pixel value alteration using random sequence. The proposed algorithm shuffles the image based on the chaotic sequence and change the value of each pixel. The key generates 16 chaotic sequences from given sequence using a secret look-up matrix. Key used for encryption improves efficiency by acting on n sub-parts of image. The Matlab is used for simulation of image encryption algorithm. The algorithm's safety is analyzed from different aspects such as histogram comparison, correlation coefficient and secret key sensitivity. The algorithm proposed is robust against statistical attack, brute force attack and plain text attack.

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