Abstract
In Appl. Opt. 55, 4720-4728 (2016), authors demonstrated the vulnerability of Linear Canonical Transform (LCT)-based optical encryption system. One of the primary reasons for this is the predictable nature of the security keys (i.e., simulated random keys) used in the encryption process. To alleviate, in this work, we are presenting a Physically Unclonable Function (PUF) for producing a robust encryption key for the digital implementations of any optical encoding systems. We note a correlation function of the scattered perfect optical vortex (POV) beams is utilized to generate the encryption keys. To the best of our knowledge, this is the first report on properly utilizing a scattered POV for the optical encryption systems. To validate the generated keys, the standard Linear Canonical Transform-based Double Random Phase Encoding (LCT-DRPE) technique is used. Experimental and simulation result validates the proposed key generation method as an effective alternative to the digital encryption keys.
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SGR likes to acknowledge the financial support from DST-SERB under grant number SRG/2019/000857.
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PV and BM have performed optical experiments and PV wrote the initial draft. SGR designed and formulated the ideas and was responsible for completion of the manuscript, IM worked on encryption part. SA and RPS critically examined/monitored each step of the work as the mentor and further reviewed/updated the manuscript.
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Vanitha, P., Manupati, B., Muniraj, I. et al. Augmenting data security: physical unclonable functions for linear canonical transform based cryptography. Appl. Phys. B 128, 183 (2022). https://doi.org/10.1007/s00340-022-07901-z
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DOI: https://doi.org/10.1007/s00340-022-07901-z