基于NTRU公钥密码体制的可认证同态密钥协商协议  

Authenticated homomorphism key agreement protocol based on NTRU public key cryptosystem

作　　者：罗炳聪[1] 柳青[2] 

机构地区：[1]云南大学信息学院,云南昆明650091 [2]云南大学软件学院,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2014年第2期168-173,共6页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南省软件工程重点实验室开放基金(2011SE08)

摘　　要：分析了常见的密钥协商协议,基于同态加密机制和NTRU公钥密码体制,提出了基于NTRU的可认证同态密钥协商协议.该协议建立的会话密钥是可认证的、等献的和前向保密的.和基于其他公钥密码体制的密钥协商协议相比,所提出的密钥协商协议的效率和安全性都有所提高.使用改进的BAN逻辑对协议进行形式化分析,证明了协议的安全性.This paper analyzed the common key agreement protocol. Based on the homomorphic encryption mechanism and NTRU Public Key Cryptosystem, the authenticated homomorphism key agreement protocol based on NTRU Public Key Cryptosystem was presented. The session key created by the that protocol was authentica- ted, contributory and forward secrecy. Compared with the key agreement protocol based on the other public key cryptosystem,it has better security and efficiency. The improved BAN logic was used to analyze the protocol for- mally, and the security of the protocol was proved.

关 键 词：同态加密 密钥协商 可认证性 BAN逻辑 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]