Journal
OPTICS COMMUNICATIONS
Volume 335, Issue -, Pages 205-211Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2014.09.046
Keywords
Multiplexing encryption; Optical asymmetric key cryptosystem; Optical experiments demonstration
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Funding
- National Basic Research Program of China [2013CBA01702]
- National Natural Science Foundation of China [61377016, 10974039, 11104049]
- Specialized Research Fund for the Doctoral Program of Higher education [20102302120009]
- Program for New Century Excellent Talents in University [NCET-12-0148]
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We propose a multiple-image encryption scheme with asymmetric keys and demonstrate it by optical experiments. The original secret images are multiplexed and encoded into a real-valued ciphertext using only one public encryption key. In the decryption process, each secret image can only be de-multiplexed by its corresponding private decryption key. The multiplexing capacity is analyzed through examining the distribution of cross-talk noise and the key space of private decryption key. Numerical simulations and optical experiments have been carried out to demonstrate the validity, high security, and large multiplexing capacity of the proposed method. (C) 2014 Elsevier B.V. All rights reserved
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