Experimental encryption multiplexing based on a JTC scheme

Myrian Cristina Tebaldi,Nestor Bolognini,Carlos Vargas,Roberto Torroba

doi:10.4302/plp.2010.4.02

Abstract

We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture. The basic approach relies on using an extra random phase mask placed before the correlator input plane, where we select different disjoint regions to encode each input object. In this way we avoid the cross talking when reconstructing the encoded objects. We experimentally validated the procedure using a photorefractive crystal as a storing medium. Full text: PDF

Highlights

We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture
This scheme is known as Double Random Phase Encryption (DRPE)
Encryption techniques imply that the input image should not be recovered without employing the correct encoding key

Summary

Introduction

We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture. Conventional optical image-encryption methods are based on the 4-f correlator architecture that uses two random phase masks [1]. The phase-conjugated beams of the encrypted data allow to obtain the input image [3,4,5]. Encryption techniques imply that the input image should not be recovered without employing the correct encoding key.

Results

Conclusion