Chinese Journal of Liquid Crystals and Displays, Volume. 34, Issue 12, 1210(2019)
Imageen cryption-secret sharing algorithm based on two-dimensional cascade modulation coupling map
In order to realize distributed secure storage of digital images, an image encryption-secret sharing algorithm is proposed in this paper. The image encryption function is completed by a sequence of four random numbers generated by a two-dimensional cascade modulation coupling map (2D-CMCM), which composed of a logistic map and an ICMIC map, including row/column scrambling and diffusion. In the secret sharing phase of the encrypted image, the encrypted image is divided into five secret subgraphs using a (3, 5) threshold secret sharing algorithm based on Lagrangian polynomial interpolation. The decryptor can obtain the lossless reconstruction of the original plaintext image only by acquiring no less than 3 secret subgraphs and secret keys. In the safety analysis experiment, the proposed algorithm shows a high degree of anti-aggression. In the reversibility analysis experiment, the secret subgraph is confirmed to achieve the lossless reconstruction of the original plaintext image. In the execution efficiency test, the high execution efficiency of the proposed algorithm is also verified. The a series of experiments con firmed the high practicability of the proposed algorithm.
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WANG Wan-ping, LI Bing. Imageen cryption-secret sharing algorithm based on two-dimensional cascade modulation coupling map[J]. Chinese Journal of Liquid Crystals and Displays, 2019, 34(12): 1210
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Received: Aug. 16, 2019
Accepted: --
Published Online: Jan. 9, 2020
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