Cryptographic salting for security enhancement of double random phase encryption schemes

TORROBA, ROBERTO; ZEA, ALEJANDRO VELEZ; BARRERA, JOHN FREDY

Journal of Optics

Institute of Physics

Lugar: Londres; Año: 2017 vol. 19 p. 105703 - 105710

2040-8978

Security in optical encryption techniques is a subject of great importance, especially in light of recent reports of successful attacks. We propose a new procedure to reinforce the ciphertexts generated in double random phase encrypting experimental setups. This ciphertext is protected by multiplexing with a ´salt´ ciphertext coded with the same setup. We present an experimental implementation of the ´salting´ technique. Thereafter, we analyze the resistance of the ´salted´ ciphertext under some of the commonly known attacks reported in the literature, demonstrating the validity of our proposal.