安全高效的无双线性对的无证书签名方案  

Secure and efficient certificateless signature scheme without bilinear parings

作　　者：胡冰洁 周彦伟[1,2] 杨波 张晶[1,2] HU Bing-jie;ZHOU Yan-wei;YANR Bo;ZHANG Jing(School of Computer Science,Shaanxi Normal University,Xi’an 710062,Shaanxi,China;State Key Laboratory of Cryptology,Beijing 100878,China;Xi’an Gaoxin No.1 Middle School East Campus,Xi’an 710075,Shaanxi,China)

机构地区：[1]陕西师范大学计算机科学学院,陕西西安710062 [2]密码科学技术国家重点实验室,北京100878 [3]西安高新一中初中部东区初级中学,陕西西安710075

出　　处：《云南大学学报（自然科学版）》2021年第3期462-469,共8页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(61802242,61772326,61802241).

摘　　要：针对现有部分无证书签名方案存在效率低和安全性不高的问题,提出一个安全高效的无证书签名方案.首先,方案未使用双线性对运算,在密钥生成时通过哈希函数加强用户公钥元素间的联系;然后,证明了在随机预言机模型下基于椭圆曲线离散对数问题对方案的不可伪造性;最后,分析了方案的无秘钥托管性、不可否认性以及前后向安全性.性能及效率分析结果表明,该方案具有更高的安全性和计算效率.Aiming at the low efficiency and lack of security of some existing certificateless signature schemes,a secure and efficient certificateless signature scheme is proposed.Firstly,the scheme does not use the bilinear parings.It binds all the elements of the public key through the hash function in the key generation.Secondly,the unforgeability of the signature is proved in the random oracle model with assuming that the elliptic curve discrete logarithm problem holds.Finally,the keyless escrow,non-repudiation and forward-backward security of the scheme are analyzed.The experiment results show that the proposed scheme is more efficient and practical.

关 键 词：无证书签名 随机预言机模型 离散对数问题 无双线性对运算 公钥替换攻击 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]