Image encryption algorithms based on generalized P-gray code bit plane decomposition

Authors:
Yicong Zhou;Karen Panetta;Sos Agaian
Affiliations:
Department of Electrical and Computer Engineering, Tufts University, Medford, MA;Department of Electrical and Computer Engineering, Tufts University, Medford, MA;Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX
Venue:
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Year:
2009

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Abstract

Image encryption is an effective method to protect multimedia information for different security purposes. In this paper, we introduce a new image bit-plane decomposition method based on the Generalized P-Gray Code (GPGC) which is a parametric sequence suitable for any base, n. Based on this decomposition, we introduce two image encryption algorithms using GPGC. The two algorithms allow for either full or partial encryption of images based on the choice of security keys: base n and distance parameter p. Experimental results show that the presented algorithms are lossless encryption methods, and that the original images can be completely reconstructed when the correct security keys are used. It is also shown that the presented algorithms can withstand the plaintext attacks.