可定时更换密钥的IBE体系  

Improving the IBE Infrastructure by Key's Timing Replacement Strategy

作　　者：王奕钧[1] 胡亮[1] 李宏图[1] 林宇[1] 

机构地区：[1]吉林大学计算机科学与技术学院,长春130022

出　　处：《电信科学》2008年第12期21-26,共6页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.60473099);教育部新世纪优秀人才支持计划基金资助项目(No.NCET-06-0300)

摘　　要：现有的IBE(identity based encryption)体系并不具备自动的、安全的定时更换密钥的机制,本文针对这一问题提出了密钥可定时更换的IBE系统。通过系统中断向量的随机数生成方法,实现了IBE系统的密钥定时更换,并分析了该系统的安全性,讨论了现有公钥加密模型及密钥可定时更换的IBE系统在电子政务和电子军务中的实用性。The existing IBE system does not have automatically and safe strategy of key＇ s timing replacement, this article proposed a key＇s timing replacement strategy of IBE system to this question. Based on the system interrupt vector random number production method, IBE Infrastructure carried the key＇s timing replacement strategy. The article had analyzed this system＇s security, and discussed the usability of the existing public key encryption model which has existed and the key replaced regularly IBE system in the egovemment and the electronic military affairs.

关 键 词：公钥加密系统 密钥定时更换 随机序列 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] O484.1[自动化与计算机技术—计算机科学与技术]