Mr. Yu Meng Profile

Yu Meng

at FiberHome Telecom Techs Co Ltd

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Proceedings Article | 8 February 2005 Paper

Analysis and solutions of security issues in Ethernet PON

Yu Meng, Tao Jiang, Dingzhong Xiao

Proceedings Volume 5626, (2005) https://doi.org/10.1117/12.571062

KEYWORDS: Computer security, Network security, Standards development, Cryptography, Clocks, Passive optical networks, Optical networks, Information security, Symmetric-key encryption, Fiber to the x

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Ethernet Passive Optical Network (EPON), which combines the low cost Ethernet equipment and economic fiber infrastructure, is being considered as a promising solution for Fiber-To-The-Home (FTTH). However, since EPON is an optical shared medium network, some unique features make it more vulnerable to security attacks. In this paper, the key security threats of EPON are firstly analyzed. And then, considering some specific properties which might be utilized for security, such as the safety of transmissions in upstream direction, some novel methods are presented to solve security problems. Firstly, based on some modification about registration, the mechanism of access control is achieved. Secondly, we implement an AES-128 symmetrical encryption and decryption in the EPON system. The AES-128 algorithm can process data blocks of 128 bits, but the length of Ethernet frame is variable. How to deal with the last block, which is not up to 128 bits, is discussed in detail. Finally, key update is accomplished through a vendor specific OAM frame in order to enhance the level of security. The proposed mechanism will remain in conformance with P2MP specification defined by 802.3ah TF, and can supply a complete security solution for EPON.

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