Intelligent shuffling cryptography with dynamic AWG/switch matrix for video transmission in WDM-PON network

Abstract

 Regarding the real-time and content adaptation requirements for end-to-end delivery of compressed video codestreams, the proposed wavelength division multiplexing (WDM) system implements cross-layer functionality with video codestream parsing and shuffling for optical wavelength carriers to achieve format-compliant encryption and high computational efficiency. The proposed intelligent shuffling cryptography scheme is controlled by an arrayed waveguide grating (AWG) and an optical switch matrix; it is presented to change the carried optical wavelength of authorized users dynamically; this serves to protect against eavesdropping at the transmitted optical line terminal end. The approximate symmetric decryption is configured with an AWG/electrical switch matrix at the receiving optical network unit end to de-shuffle the wavelength and retrieve the video datastream in compressed format. In the proposed system, the presented chaos/binary algorithm (i.e., CBmA) generates the shuffling sequences required for implementing random and aperiodic effectiveness. The experimental video application layer results showed that the perceptibility of shuffled videos verifies the content protection ability of the proposed system on the basis of the peak signal-noise ratio degradation and perceptual quality.