| Fiat-Shamir签名中阈下信道及其封闭协议研究 |
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| 引用本文： | 綦科,谢冬青,罗卿.Fiat-Shamir签名中阈下信道及其封闭协议研究[J].湖南大学学报(自然科学版),2009,36(12). |
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| 作者姓名： | 綦科 谢冬青 罗卿 |
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| 作者单位： | 1. 湖南大学,计算机通信学院,湖南,长沙,410082;广州大学,计算机科学与教育软件学院,广东,广州,510006
2. 湖南大学,计算机通信学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金资助项目，广东省自然科学基金资助项目 |
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| 摘 要： | 针对Fiat-Shamir签名算法,提出了该签名算法下的一类宽带和窄带阈下信道,设计了一个新的阈下信道封闭协议,完全封闭了本文给出的一类Fiat-Shamir签名中的宽带和窄带阈下信道,分析证明该协议具备安全性和完全封闭性.同时,协议实现过程中监视者参与签名生成,但是没有伪造签名的能力,因此在保证签名者签名权利的同时,该协议可以看作一种新的带审批权的签名方案.
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| 关 键 词： | 数字签名 阈下信道 封闭协议 Fiat-Shamir签名 |
Research on the Subliminal Channels and its Subliminal-free Protocol in Fiat-Shamir Signature |
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| QI Ke,XIE Dong-qing,LUO Qing.Research on the Subliminal Channels and its Subliminal-free Protocol in Fiat-Shamir Signature[J].Journal of Hunan University(Naturnal Science),2009,36(12). |
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| Authors: | QI Ke XIE Dong-qing LUO Qing |
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| Abstract: | The broad-band and narrow-band subliminal channels of Fiat-Shamir signature algorithm were put forward, and a new subliminal-free protocol was designed, in which subliminal channels existing in Fiat-Shamir signature were avoided and its security was analyzed .In protocol the warden and the signer finish the signature together, but the warden can't forge the signatures, so it can also be viewed as a signature scheme with the warden's examining and approving. |
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| Keywords: | digital signature subliminal channels subliminal-free protocol Fiat-Shamir scheme |
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