计算机应用研究2017，Vol.34Issue(1)：217-220,245,5.DOI:10.3969/j.issn.1001-3695.2017.01.049
一种理想格上的身份类广播加密方案
Identity-based broadcast encryption from ideal lattice
摘要
Abstract
By using the characteristics of fast and efficient and quantumattack resistance from lattice,this paper proposed a provable secure identity-based broadcast encryption based on learning with errors over rings .Firstly,by making use of im-proved trapdoor function based on ideal lattice and bonsai trees,it generated users’private keys.Then,added an once signa-ture algorithm to ensure the legitimacy of message.Lastly,this paper proved the scheme to be indistinguishable chosen mes-sage attack security under the standard model ,and its security could reduce to decision R-LWE hardness assumption.Analy-sis shows that the proposed scheme has the advantage of fast encryption speed and low cipher extension rate.and can effective-ly realize the dynamic extension of the client for applying.关键词
基于身份的加密方案/环上错误学习/广播加密/理想格/盆景树Key words
identity-based encryption/R-LWE/broadcast encryption/ideal lattice/bonsai trees分类
信息技术与安全科学引用本文复制引用
项文,杨晓元,吴立强..一种理想格上的身份类广播加密方案[J].计算机应用研究,2017,34(1):217-220,245,5.基金项目
国家自然科学基金资助项目（61272492）；国家自然科学基金资助项目 （）
