Journal
OPTICS COMMUNICATIONS
Volume 285, Issue 21-22, Pages 4280-4284Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2012.06.061
Keywords
Image encryption; Fully phase; Decryption
Categories
Funding
- Zhejiang Provincial Natural Science Foundation of China [R1090168]
- National Natural Science Foundation of China [10874150, 11074219, 11005092]
- Key Projection of the Education Commission of Zhejiang Province of China [Z201120128]
- Program for Innovative Research Team of Young Teachers in Zhejiang A F University [2009RC01]
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We propose an optoelectronic image encryption and decryption technique based on coherent superposition principle and digital holography. With the help of a chaotic random phase mask (CRPM) that is generated by using logistic map, a real-valued primary image is encoded into a phase-only version and then recorded as an encoded hologram. As for multiple-image encryption, only one digital hologram is to be transmitted as the encrypted result by using the multiplexing technique changing the reference wave angle. The bifurcation parameters, the initial values for the logistic maps, the number of the removed elements and the reference wave parameters are kept and transmitted as private keys. Both the encryption and decryption processes can be implemented in opto-digital manner or fully digital manner. Simulation results are given for testing the feasibility of the proposed approach. (C) 2012 Elsevier B.V. All rights reserved.
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