安全高效的空间信息网中密钥管理方案  

Secure Key Management in Identity Based Encryption for Space Information Networks

作　　者：徐军华[1] 樊宏[2] 郝云芳[3] 

机构地区：[1]西安邮电学院理学院,陕西西安710061 [2]西安邮电学院电子信息工程学院,陕西西安710061 [3]西安培华学院电气信息工程学院,陕西西安710061

出　　处：《现代电子技术》2011年第7期81-84,共4页Modern Electronics Technique

摘　　要：空间信息网是卫星通信系统的进一步发展,安全高效的密钥管理是保障空间信息网内安全通信的关键。分析了空间信息网中密钥管理方案的安全需求,提出了按需建立密钥的思想,并依据该思想提出一个适用于空间信息网的安全高效的密钥管理方案。方案采用完全分布式的管理模式,每个结点管理并维护自己的密钥列表,方案具有认证安全性、前向保密性等安全性特征。仿真结果表明,与现有的空间信息网密钥管理方案相比,该方案在网络规模较大时能极大地降低通信开销,具有良好的通信效率。Space information network is the further development of satellite network. Secure and efficient key management is a key technology of secure communication in space information networks. Based on the security requirement of space information networks, a new approach which establishes session key on demand to ensure communication security in space information networks is proposed. In addition, a secure and efficient distributed key management scheme for space information networks is given following this approach. In the scheme, each node in a network manages and maintains its key list independently. The security analysis of the scheme shows that the scheme has the characteristics of authenticated security and forward security. The simulation result shows that the scheme can reduce the communication cost significantly and has better communication efficiency in comparison with the existing key management schemes for space information networks. Thus, the scheme can secure space information networks effectively.

关 键 词：保密通信 空间信息网 密钥管理 密钥交换 认证安全性 

分 类 号：TN918-34[电子电信—通信与信息系统]