摘要
为了解决无证书短签名方案中单KGC权力过于集中的问题,提出一种基于双重KGC的无证书短签名方案,其中双重KGC之间相互制约,有效地减少了单KGC主密钥泄露和被恶意操控带来的危害。随后在随机预言机模型、k-CAA和Inv-CDH问题困难性假设下,证明了签名方案在适应性选择消息攻击下是存在性不可伪造的。最后与其他无证书数字签名方案进行了比较,并用C语言实现了该方案.实验结果和分析表明该方案计算量较低,运行效率和安全性较高。
In order to solve the problem that the power of the single KGC in certificateless short signature is too concentrated,this paper proposed a certificateless short signature scheme with double KGC,in which double KGC was restricted by each other.So it could effectively reduce the harm of the single KGC’s main key leakage and malicious manipulation.Then,under the random oracle model,the difficult problem ofk-CAA and Inv-CDH,it proved that the signature scheme was existentially unforgeable under adaptive chosen message attack.Finally,it compared the signature scheme with other certificateless schemes,and implemented the signature scheme in C language.The experimental results and analysis show that the scheme has lower computational cost,higher operating efficiency and security.
作者
左黎明
张梦丽
胡凯雨
易传佳
Zuo Liming;Zhang Mengli;Hu Kaiyu;Yi Chuanjia(School of Science,East China Jiaotong University,Nanchang 330013,China;SEC Institute,East China Jiaotong University,Nanchang 330013,China)
出处
《计算机应用研究》
CSCD
北大核心
2020年第5期1482-1487,共6页
Application Research of Computers
基金
国家自然科学基金资助项目(11761033)
江西省教育厅科技项目(GJJ161417,GJJ170386)。
