文章简单的介绍了GPON 的体系结构与下行帧的结构,并着重介绍了AES 加密的流 程、方法与具体算法,最后对GPON 中的AES 加密,解密方法,AES 计数器模式在GPON中的使用进行了详细的介绍。 关键词 GPON AES 加密 解密 密钥 AES Encryption in GPON Jinglin Ruan Lin Liu (Wuhan Research Institute of Posts and Telecommunications,Wuhan430074,China) Abstract This paper describe the system of GPON and the structure of the downstream frame, particularly introduce the method of AES encryption, the encryption and decryption of AES in GPON system, the CTR mode of AES in GPON system . Keywords GPON , AES , encryption , decryption , key