Multiplexing of encrypted data using fractal masks
John Fredy Barrera, Myrian Tebaldi, Dafne Amaya, Walter D. Furlan, Juan Antonio Monsoriu, Néstor Bolognini, Roberto Torroba · Optics Letters · 2012
In this Letter, we present to the best of our knowledge a new all-optical technique for multiple-image encryption and multiplexing, based on fractal encrypting masks. The optical architecture is a joint transform correlator. The multiplexed encrypted data are stored in a photorefractive crystal. The fractal parameters of the key can be easily tuned to lead to a multiplexing operation without cross talk effects. Experimental results that support the potential of the method are presented.