Advances in Optical Visual Information Security: A Comprehensive Review
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Date
2024-01
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Abstract
In the modern era, the secure transmission and storage of information are among the
utmost priorities. Optical security protocols have demonstrated significant advantages over digital
counterparts, i.e., a high speed, a complex degree of freedom, physical parameters as keys (i.e., phase,
wavelength, polarization, quantum properties of photons, multiplexing, etc.) and multi-dimension
processing capabilities. This paper provides a comprehensive overview of optical cryptosystems
developed over the years. We have also analyzed the trend in the growth of optical image encryption
methods since their inception in 1995 based on the data collected from various literature libraries such
as Google Scholar, IEEE Library and Science Direct Database. The security algorithms developed
in the literature are focused on two major aspects, i.e., symmetric and asymmetric cryptosystems.
A summary of state-of-the-art works is described based on these two aspects. Current challenges and
future perspectives of the field are also discussed.