Chosen-plaintext attack on lensless double-random phase encoding in the Fresnel domain

We demonstrate a method of chosen-plaintext attack on lensless double-random phase encoding (L-DRPE) in the Fresnel domain. With this attack an opponent can access two encryption keys with help of the impulse functions as chosen plaintexts. This shows that a lensless optical encryption scheme based...

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Bibliographic Details
Published in:Optics letters 2006-11, Vol.31 (22), p.3261-3263
Main Authors: Peng, Xiang, Wei, Hengzheng, Zhang, Peng
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Image forming and processing
Imaging and optical processing
Optical computers, logic elements, interconnects, switches
neural networks
Optical elements, devices, and systems
Optics
Physics
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Summary:We demonstrate a method of chosen-plaintext attack on lensless double-random phase encoding (L-DRPE) in the Fresnel domain. With this attack an opponent can access two encryption keys with help of the impulse functions as chosen plaintexts. This shows that a lensless optical encryption scheme based on DRPE is vulnerable to chosen-plaintext attack. Cryptoanalysis also indicates that the security worry originates from the linearity of the encryption and decryption mechanism of the L-DRPE scheme. One of the interesting features of the proposed attack is that the decryption process is lossless. Numerical simulations show good agreement with theoretical analysis.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.31.003261