EPON下行传输的加密实现  

Encryption realization of EPON in down transmission

作　　者：李蓓[1] 张波涛[1] 

机构地区：[1]武汉科技大学计算机学院,武汉430081

出　　处：《光通信技术》2008年第1期11-14,共4页Optical Communication Technology

摘　　要：以太网无源光网络(EPON)被认为是下一代宽带接入网的重要解决方案。然而,因为EPON是一个点到多点的系统,仍存在安全问题。文章首先简单介绍了高级加密算法(AES-128),重点研究了AES-128加密算法在EPON系统中具体实现方式,包括密钥初始化、加密的实现、以及密钥的更新,同时为保证最后一个分组的安全,本文也给出了解决方案。Ethernet passive optical network EPON is considered as a promising solution for the next generation broadband, However, since EPON is a point-to-multipoint, some unique features make it more vulnerable to security attacks. In this paper, Advanced Encryption Standard （AES-128） cipher algorithm is firstly given. And then, we implement an AES-128 symmetrical encryption and decryption in the EPON system, including the initiation of the key, the implementation issues of security mechanism, and key update. Meanwhile, how to deal with the last block, which is not up to 128bit,is discussed in detail.

关 键 词：以太网无源光网络 高级加密算法 加密 

分 类 号：TN929.11[电子电信—通信与信息系统]