Vol. 49, Issue 3, pp. 445-460

Vol. 49 Issue 3 pp. 445-460

Compressive-sensing-based double-image encryption algorithm combining double random phase encoding with Josephus traversing operation

Hao Jiang, Zhe Nie, Nanrun Zhou, Wenquan Zhang

Keywords

image encryption, compressive sensing, double random phase encoding, Josephus traversing

Abstract

A double-image encryption scheme based on compressive sensing is designed by combining a double random phase encoding technique with Josephus traversing operation. Two original images are first compressed and encrypted by compressive sensing in the discrete wavelet domain and then connected into a complex image according to the order of the alternate rows. Moreover, the resulting image is re-encrypted into stationary white noise by a double random phase encoding technique. Lastly, Josephus traversing method is utilized to scramble the transformed image. The initial states of the Henon chaotic map are the secret keys of this double-image encryption algorithm, which can be used to control the construction of the measurement matrix in compressive sensing and generation of the random-phase mask in double random phase encoding. Simulation results show that the proposed double-image encryption algorithm is effective and secure.

Vol. 49
Issue 3
Article No: 07
pp. 445-460

4.15 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology