摘要
为满足广播环境下通信数据的机密性和认证性的需求,设计一种基于身份的多接收者签密方案。采用减少双线性对运算次数的方法,降低方案的计算量和通信成本;在判定双线性Diffie-Hellman(decisional bilinear Diffie-Hellman,DBDH)与计算Diffie-Hellman(computational Diffie-Hellman,CDH)是难解问题的假设基础之上,证明方案在随机预言模型下满足不可区分性和不可伪造性,分析其正确性。通过与其它基于身份的多接收者签密方案进行比较,验证了该方案具有更低的运算量。
To satisfy the requirement of confidentiality and authentication of communication data in broadcasting environment,an identity-based multi-receiver signcryption scheme was proposed.By using the method of reducing the number of bilinear pairing operations,the computational complexity and communication cost of the proposed scheme were reduced.Based on the assumptions of hard problems of decisional bilinear Diffie-Hellman(DBDH)and computational Diffie-Hellman(CDH),the proposed scheme was proved to be indistinguishable and unforgeable in the random oracle model,and the correctness of the scheme was analyzed.Compared with other the identity-based multi-receiver signcryption scheme,the proposed scheme is verified to have lower computational complexity.
作者
郭会
邓伦治
GUO Hui;DENG Lun-zhi(School of Mathematical Science,Guizhou Normal University,Guiyang 550001,China)
出处
《计算机工程与设计》
北大核心
2019年第9期2435-2439,2445,共6页
Computer Engineering and Design
基金
国家自然科学基金项目(61562012)
贵州省教育厅创新群体重大研究基金项目(黔教合KY字2016【026】)
关键词
基于身份密码
签密
多接收者
双线性映射
随机预言模型
identity based cryptography
signcryption
multi-receiver
bilinear mapping
random oracle model
