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首页> 外文会议>BMEI 2012;International Conference on Biomedical Engineering and Informatics >Fuzzy identity-based threshold signature scheme based on bilinear maps
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Fuzzy identity-based threshold signature scheme based on bilinear maps

机译：基于双线性图的基于模糊身份的阈值签名方案

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摘要

Threshold signature is a useful tool for sharing the power to sign, which has been extensively studied in the certificate-based public key setting and identity-based setting. Inspired by the work of Sahai and Waters's fuzzy identity-based encryption, we introduce the concept of fuzzy identity-based threshold signature. In this notion, the trusted dealer's identity-based private key is shared among n participating parties who are identified by their attribute sets, any subset of t participating parties out of n can generate a signature on behalf the dealer, but fewer than t participating parties can not create a valid signature on behalf of the dealer. The definition and security model of fuzzy identity-based threshold signature scheme are formalized, and a provably secure fuzzy identity-based threshold signature based on the bilinear maps is presented in this paper.
机译：阈值签名是共享签名权的有用工具，已在基于证书的公钥设置和基于身份的设置中广泛研究了阈值签名。受Sahai和Waters基于模糊身份的加密工作的启发，我们引入了基于模糊身份的阈值签名的概念。在此概念中，在由其属性集标识的n个参与方之间共享受信任的经销商基于身份的私钥，n个参与者中的t个参与方的任何子集都可以代表经销商生成签名，但少于t个参与方无法代表经销商创建有效的签名。规范了基于模糊身份的阈值签名方案的定义和安全模型，提出了基于双线性图的可证明安全的基于模糊身份的阈值签名。

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