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Collision-based flexible image encryption algorithm
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DOI：10.1016/j.jss.2011.08.032.png)
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This paper presents a novel image encryption algorithm, which is flexible to encrypt digital images with different precisions. The algorithm is construct from three collision-based dynamical systems: Hardy-Pomeau-Pazzis (HPP) model, rotary element (RE) model and billiard-particle model. Both the HPP and RE model are efficient and can support parallel computing; the billiard-particle is an excellent model for round key expansion. These models are revised to best suits image encryption. Analyses and simulations demonstrate that the proposed algorithm has satisfactory properties of randomness and sensitivity. (C) 2011 Elsevier Inc. All rights reserved.
Keyword:
Encryption
HPP model
Rotary element model
Dynamical billiards
Collision-based computing
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