Baseline Privacy Plus Interface(BPI+)is a specifiation of data privacy across the shared medium cable network interface base on DOCSIS. Using these Keys and their management protocols,we can solve the data security in MAC layer for HFC network.

• 增强型基线保密性接口(BPI+)是一种基于DOCSIS标准的数据保密访问共享媒体的接口标准,利用BPI+定义的多种密钥及管理协议可以在媒体访问控制层(MAC)解决HFC网络的数据安全问题。