摘要
针对空间时延容忍网络高延时、连接易中断等特点,提出一种非交互式的密钥交换协议,并在随机预言模型下对其进行安全性证明。该协议无需用户交互即生成一个共享的对称密钥,可消除对传统公钥基础设施中证书的依赖,减少通信与存储开销,同时避免基于身份的公钥加密体制中存在的密钥托管问题。分析结果表明,该协议未使用耗时的双线性对运算,具有较高的计算效率,更适用于计算能力受限、能量资源宝贵的空间环境。
The space Delay Tolerant Network（DTN） has characteristic such as high delay and frequent disconnectivity. Aiming at this problem,this paper designs a non-interactive key exchange protocol, and it is proven secure in the random oracle model. The proposed protocol enables two parties to agree on a symmetric shared key without requiring any interaction. The protocol eliminates the dependency on certificate used in Public Key Infrastructure（PKI） and avoids the key escrow problem in ID-based Public Key Cryptography （ID-PKC）. Analysis result shows that the proposed protocol does not utilize the expensive pairing computation and achieves higher efficiency compared with other Non-interactive Key Exchange（NIKE） protocols, and thus proves to be suitable for the space environment with restricted computing and few power resource.
出处
《计算机工程》
CAS
CSCD
北大核心
2016年第4期137-142,共6页
Computer Engineering
基金
国家自然科学基金资助项目"无线Mesh网络中跨层安全关键技术研究"(61272451)
关键词
时延容忍网络
非交互式密钥交换
无证书密码
可证明安全
随机预言模型
Delay Tolerant Network （DTN）
non-interactive key exchange
certificateless cryptography
provable security
random oracle model
