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无证书代理签名方案 被引量:1

Certificateless proxy signature scheme
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摘要 为了避免基于身份密码系统中的密钥托管问题和传统公钥密码的证书管理问题,利用双线性对,提出了一种无证书代理签名方案.基于计算Diffie-Hellman困难问题假定,在随机预言模型下证明了方案的安全性.与已有的同类方案的性能进行了比较,结果表明提出的方案在计算代价和通信代价上有一定的优势. In order to avoid the key escrow problem in identity based cryptosystem and the certificate managementproblem in traditional public key cryptosystem,we propose a certificateless proxy signature from bilinear pairing.Based on assumption of the computational Diffie-Hellman hardness problem,our scheme is proved secure in randomoracle model.Compared with the existing certificateless proxy signature schemes,the proposed scheme has advantagein both computation cost and communication cost.
出处 《南京信息工程大学学报(自然科学版)》 CAS 2017年第5期490-496,共7页 Journal of Nanjing University of Information Science & Technology(Natural Science Edition)
基金 国家自然科学基金(61672207 61272542) 江苏省自然科学基金(BK20161511) 中央高校基本科研业务费重点培育专项(2016B10114) 中美计算机科学研究中心开放课题(KJR16039)
关键词 无证书签名 双线性对 代理签名 随机预言模型 certificateless signature bilinear pairing proxy signature random oracle
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