A Secure Ethernet Passive Optical Network Protocol for Industrial Internet of Things

Ethernet Passive Optical Network (EPON) is a high-speed, energy-efficient fiber optic network that has gained attention with the growth of the Industrial Internet. However, existing security protocols for EPON, based on strand space theories, have flaws such as identity inconsistencies and consensus issues. This paper expands the strand space model and authentication testing method, enhances the Fiber Channel Password Authentication Protocol (FACP) strand space model in the EPON network environment using symmetric cryptography and asymmetric cryptography, fulfills the authentication requirements, and obtains the corresponding attack examples. Experimental results demonstrate that this protocol can enhance the security and efficiency of communication between devices and between devices and nodes (servers, disks) in commonly used EPON environments without affecting the identity authentication function.