改进的基于身份的签密方案  

Improved Identity-based Signcryption Scheme

作　　者：汤鹏志[1] 郭红丽[1] 张婷婷[1] 

机构地区：[1]华东交通大学系统工程与密码学研究所,南昌330013

出　　处：《宜春学院学报》2015年第12期1-4,共4页Journal of Yichun University

基　　金：国家自然科学基金项目(编号:11061014;61240025);江西省高校科技落地计划项目(编号:KJLD12067);江西省教育厅科研项目(编号:GJJ13339);华东交通大学校立科研基金项目(编号:11JC04)

摘　　要：对邓伦治等提出的高效的基于身份的签密方案进行分析,发现其存在选择性明文攻击。在原方案的基础上,提出了改进的基于身份的签密方案。在随机预言机模型和DLP下证明了方案的机密性和不可伪造性。本文方案比原方案少了一个哈希函数,比原方案更为高效。Through the cryptanalysis of efficient identity - based signcryption proposed by Deng et al. Found that the scheme could not resist selective plaintext attack. Based on the original scheme, an improved ID- based sign- cryption scheme was proposed and the scheme was proved to be secure in the random oracle model and under DLP and which was confidentiality and could not be forged, the new scheme was more efficient than the original program which had less a hash function than the original scheme.

关 键 词：基于身份 签密 随机预言机 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]