Digital holography is a technique that permits digital capture of holograms and subsequent
processing on a digital computer. This paper reviews various applications of this technique …

Abstract Information security and authentication are important challenges facing society.
Recent attacks by hackers on the databases of large commercial and financial companies …

The Fourier plane encryption algorithm is subjected to a known-plaintext attack. The
simulated annealing heuristic algorithm is used to estimate the key, using a known plaintext …

We present a digital signal processing technique that reduces the speckle content in
reconstructed digital holograms. The method is based on sequential sampling of the discrete …

We perform a numerical analysis on the double random phase encryption∕ decryption
technique. The key-space of an encryption technique is the set of possible keys that can be …

The double-random phase encoding (DRPE) scheme, which is based on a 4 f optical
correlator system, is considered as a reference for the optical encryption field. We propose a …

Optical waves as information carriers can process two-dimensional information in parallel
with high speed and have many degrees of freedom (eg, wavelength, amplitude, phase, and …

We investigate the implementation and application of the RC5 block cipher algorithm for
digital images and provide testing, verification, and encryption efficiency of the RC5 block …

A compression method of phase-shifting digital holographic data is presented. Three
interference patterns are recorded, and holographic information is extracted from them by …

We present the results of what we believe is the first application of wavelet analysis to the
compression of complex-valued digital holograms of three-dimensional real-world objects …