中文摘要：

密钥管理问题是网络安全的关键问题。密钥管理是处理密钥自产生到最终销毁的整个过程中的有关问题,从技术上看,密钥管理包括密钥的产生、存储、分配、使用和销毁等一系列技术问题,密钥存储和分配是其中最重要的问题。为网络配置合适的密钥管理机制,使其密钥能够动态地生成和分发,能够动态更新,才能使网络免于攻击。因此,研究网络密钥管理问题具有重要的意义。

英文摘要：

Key management is the core issue in network system security;it deals with the correlative problems in the whole process of the key from being generated to being ultimately destroyed.In terms of technology,it is a series of techniques including key generation,storage,distribution,use and destruction,etc.Among them,the key storage and the key distribution are two most critical issues.In order to protect the networks free from attacks,they have to be configured the appropriate key management mechanism so that their keys are able to be generated and distributed dynamically and updated dynamically as well.Thus,to study the key management issue of the network has important significance.