Format

Send to

Choose Destination
See comment in PubMed Commons below
Appl Opt. 2012 Feb 20;51(6):745-50. doi: 10.1364/AO.51.000745.

Quantitative security evaluation of optical encryption using hybrid phase- and amplitude-modulated keys.

Author information

1
Department of Atomic Physics, Budapest University of Technology and Economics, 8 Budafokiút, Budapest 1111, Hungary. sarkadi@eik.bme.hu

Abstract

In the increasing number of system approaches published in the field of optical encryption, the security level of the system is evaluated by qualitative and empirical methods. To quantify the security of the optical system, we propose to use the equivalent of the key length routinely used in algorithmic encryption. We provide a calculation method of the number of independent keys and deduce the binary key length for optical data encryption. We then investigate and optimize the key length of the combined phase- and amplitude-modulated key encryption in the holographic storage environment, which is one of the promising solutions for the security enhancement of single- and double-random phase-encoding encryption and storage systems. We show that a substantial growth of the key length can be achieved by optimized phase and amplitude modulation compared to phase-only encryption. We also provide experimental confirmation of the model results.

PMID:
22358164
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center