Optical-data storage-readout technique based on fractal encrypting masks.
We propose the use of fractal structured diffractive masks as keys in secure storage-readout systems. A joint transform correlator based on a photorefractive crystal in the Fourier domain is implemented to perform encryption and decryption. We discuss the advantages of encrypting information using this kind of deterministic keys in comparison to conventional random phase masks. Preliminary experimental results are presented to demonstrate the effectiveness of the proposed system.
Tebaldi
Myrian
M
Centre de Investigaciones Opticas, CONICET-CIC, La Plata, Argentina.
Furlan
Walter D
WD
Torroba
Roberto
R
Bolognini
Néstor
N