| 一种高效的服务器协助门限签名方案 |
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| 引用本文： | 黄素珊.一种高效的服务器协助门限签名方案[J].中国科技信息,2009(16):91-92. |
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| 作者姓名： | 黄素珊 |
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| 作者单位： | 华东师范大学信息学院计算机系,200241 |
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| 摘 要： | 在电子通讯中,签名私钥的安全性尤其重要,而解决这个问题的有效方法是把签名私钥分成若干部分并发放给多个私钥持有者.但是,通常来说在一般的门限签名中,要生成合法的签名,必然要有一定数量的私钥持有者参与签名.那么,这样的门限签名就不适用于服务器作为私钥持有者来参与门限签名.针对这个问题,本文提出一种高效的服务器协助门限签名方案.在该方案中,签名由用户提出,且用户持有的设备可以进行模指数运算.同时,只要新模集合能满足某些安全性质.方案中的模集合就能被新的模集合替换且不降低方案的安全性.
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| 关 键 词： | 门限签名 计算机安全 数字签名 网络 信息安全 |
An Efficient Scheme for Server-Assisted Threshold Signatures |
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| Huang Sushan.An Efficient Scheme for Server-Assisted Threshold Signatures[J].CHINA SCIENCE AND TECHNOLOGY INFORMATION,2009(16):91-92. |
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| Authors: | Huang Sushan |
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| Abstract: | Secrecy of private signing keys is one of the most Important issues in secure electronic commerce. A promising solution te this problem is to distribute the signing function among multiple parties. However, threshold signature scheme typically assumes that the shared signing function can only be activated by a quorum number of parties, which is inappropriate In settings where a user employs some public servers for a threshold protection of her private signing function. In this paper we present an efficient secure scheme for server-assisted threshold signatures, where the signing function is activated by a user and is powerful enough to efficiently compute modular exponentiatiens. Modular construction of the schemes ensures that any module can be substituted without weakening security of the resultant scheme, as as the substitutive one satisfies certain security requirement. |
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| Keywords: | network information security |
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