The Implementation of the Link Security Module in an EPON Access Network

In this paper, the link security module developed by draft standard of IEEE802.1AE in order to protect all frames from a listening or attacking of a malicious user at an EPON link. And it applied at an EPON OLT (Optical Line Terminal)/ONU (Optical Network Unit) and is provided a link security about the maximum 64 ONUs. It also used a 128bits GCM-AES (Galois/Counter Mode-Advanced Encryption Standard) of an authenticated encryption mode that was mandatory-to-implement crypto-algorithm in draft standard. So, link security module can provide the user data confidentiality and frame data integrity, and data origin authenticity to subscribers, and support a link security at the maximum 2Gbps EPON using the parallel CTR-AES (Counter-AES) in the GCM-AES.