How to Increase Key Space in PON

Abstract

key space has always remained a concern in all the cryptographic systems. In today’s fast computing world, key space is always limited. Data Encryption Standard (DES), Triple DES (3DES) and Advanced Encryption Standard (AES) have solved the problem to a greater extent. However, In this paper, we introduce a novel mechanism which increases the key space in Passive Optical Network (PON) by using wavelength hopping using wavelength Division Multiplexed system in the PON instead of Time Division Multiplexed system. Mathematical results show that we achieve many times more key space then DES, Triple DES, AES