基于格的非交互式密钥交换协议  

Non-interactive key exchange based on lattice

作　　者：邹小花[1] Zou Xiaohua(Science and Technology College of Nanchang Hangkong university,Nanchang,Jiangxi 332020,China)

机构地区：[1]南昌航空大学科技学院,江西南昌332020

出　　处：《计算机时代》2021年第10期1-5,共5页Computer Era

基　　金：江西省教育厅科技项目“基于格的非交互式密钥交换协议”(GJJ151170)。

摘　　要：当前网络中广泛使用的交互式密钥交换协议,如SSL协议和TLS协议,由于密钥建立过程的通信量较大,不适合物联网中传感器等资源有限的轻型网络设备使用,因此提出一种基于格的非交互式密钥交换协议。文章基于格理论的环上带误差学习困难性问题,使用Freire等人给出的非交互式密钥交换协议形式化定义和安全模型对协议的安全性进行分析,通过攻击者与挑战者之间的博弈证明了协议的安全性。该协议具有抗量子攻击安全性,能够有效地提升物联网的通信安全。Currently,the interactive key exchange protocols widely used in the network,such as SSL and TLS,are not suitable for the light network equipment with limited resources such as sensors in the Internet of Things because of the large traffic in the key generation process.Therefore,a lattice based non-interactive key exchange protocol is proposed.In this paper,based on the hard problems of R-LWE from lattice theory,the security of the protocol is analyzed by using the formal definition and security model of non-interactive key exchange protocol proposed by Freire et al.And the security of the protocol is proved by the game between the attacker and the challenger.The protocol has anti-quantum attack security and can effectively improve the communication security of the Internet of Things.

关 键 词：密码学 密钥 格 非交互式密钥交换 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]