| 高效的无证书签名和群签名方案 |
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| 引用本文： | 陈虎,朱昌杰,宋如顺.高效的无证书签名和群签名方案[J].计算机研究与发展,2010,47(2). |
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| 作者姓名： | 陈虎 朱昌杰 宋如顺 |
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| 作者单位： | 1. 淮北煤炭师范学院计算机科学与技术学院,安徽淮北,235000
2. 南京师范大学数学与计算机科学学院,南京,210097 |
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| 基金项目： | 国家“211工程”建设项目(181070H901);;国家自然科学基金项目(60673070);;江苏省自然科学基金项目(2003101SBRB231)~~ |
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| 摘 要： | 研究新兴无证书密码体制下的群签名问题,提出无证书群签名的安全模型.利用双线性映射提出一个无证书签名方案,并在随机预言模型下给出它正式的安全证明.利用所给的签名方案设计了一个无证书群签名方案.前者在签名和验证阶段只需一个双线性运算,后者只需两个,故它们具有执行性能上的优势.它们的安全性建立在计算Diffie-Hellman问题困难性上.该群签名方案满足群签名的各种安全要求,还允许用户动态的加入与离开且不需更新群公钥和其他群成员的签名私钥.群签名的长度不依赖于群成员的数目.鉴于群签名方案安全、高效和无证书管理的优点,它可广泛应用于电子商务、电子投票等方面.
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| 关 键 词： | 无证书密码体制 群签名 双线性映射 计算Diffie-Hellman问题 随机预言器 |
Efficient Certificateless Signature and Group Signature Schemes |
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| Chen Hu,Zhu Changjie,Song Rushun.Efficient Certificateless Signature and Group Signature Schemes[J].Journal of Computer Research and Development,2010,47(2). |
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| Authors: | Chen Hu Zhu Changjie Song Rushun |
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| Affiliation: | School of Computer Science and Technology;Huaibei Coal Industry Teachers College;Huaibei;Anhui 235000;School of Mathematics and Computer Science;Nanjing Normal University;Nanjing 210097 |
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| Abstract: | Group signatures are studied in newly proposed certificateless public key setting.The security model for the certificateless group signature scheme is put forward.Using bilinear pairings,a certificateless signature scheme is presented,which is formally proven in the random oracle.At the same time,a group signature scheme,based on the certificateless signature scheme given in this paper,is constructed.The former is computationally efficient in that it just needs one pairing operation in its signing and verif... |
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| Keywords: | certificateless cryptography group signature bilinear pairing computational Diffie-Hellman problem random oracle |
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