| 一个标准模型下基于身份的高效代理签名方案 |
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| 引用本文： | 于义科,郑雪峰,韩晓光,刘行兵.一个标准模型下基于身份的高效代理签名方案[J].计算机科学,2011,38(6):133-139. |
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| 作者姓名： | 于义科 郑雪峰 韩晓光 刘行兵 |
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| 作者单位： | 1. 北京科技大学信息工程学院,北京,100083;南昌航空大学信息工程学院,南昌,330063
2. 北京科技大学信息工程学院,北京,100083 |
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| 基金项目： | 本文受国家自然科学基金项目(60803123,60674054)，北京市重点学科建设项目(XK100080537)，北京市重点学科建设项目一计算机系统结构资助。 |
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| 摘 要： | 目前对于基于身份的代理签名方案来说，方案的安全性大多是在随机预言模型下证明的，但随机预言机的实现方式可能会导致方案的不安全。相对而言，设计标准模型下的代理签名方案更有实际意义。提出了一种安全、高效的基于身份的代理签名方案，利用双线性对技术对方案的正确性进行了严格证明，并在标准模型下基于CDH困难假设给出了方案安全性的详细证明。与现有的标准模型下安全的基于身份的代理签名方案相比，该方案具有更高的效率。
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| 关 键 词： | 基于身份的代理签名，标准模型，基于身份的密码，CDH-问题 |
Efficient ID-based Proxy Signature in the Standard Model |
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| YU Yi-ke,ZHEN Xue-feng,HAN Xiao-guang,LIU Xing-bing.Efficient ID-based Proxy Signature in the Standard Model[J].Computer Science,2011,38(6):133-139. |
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| Authors: | YU Yi-ke ZHEN Xue-feng HAN Xiao-guang LIU Xing-bing |
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| Affiliation: | (School of Information Engineering,University of Science and Technology Beijing,Beijing 100083,China);(School of Information Engineering,Nanchang HangKong University,Nanchang 330063,China) |
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| Abstract: | At present, the security of the identity based proxy signature schemes was almost proven in the random oracle model, but for which any implementation of the random oracle results in insecure schemes. It is more practical to design threshold proxy signature scheme in the standard model, compared with the existing ones. This paper presented an secure and efficient ID-based proxy signature scheme (IBPS) in the standard model. The scheme's correctness was exactly proven in terms of bilinear pairing technique and its security analysis and prove was given in detail in the assumption of the computational DifficHellman problem. Compared with the known identity based scheme in the standard model, the scheme enjoys less operation. |
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| Keywords: | Identity based proxy signature Standard model Identity based cryptography CDH-problem |
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