标准模型下可证安全的基于身份门限签密方案

doi:10.13190/jbupt.201002.11.sunh

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (2): 11-15.doi: 10.13190/jbupt.201002.11.sunh

标准模型下可证安全的基于身份门限签密方案

孙华，姚宣霞，刘行兵，韩晓光

北京科技大学信息工程学院，北京 100083

收稿日期:2009-06-20 修回日期:1900-01-01 出版日期:2010-04-28 发布日期:2010-04-28
通讯作者: 孙华 E-mail:sh1227@163.com
作者简介:孙华(1980—)，男，博士生; 郑雪峰(1951—)，男，教授，博士生导师.
基金资助:
国家自然科学基金项目(60674054)

Provable Secure Identity-based Threshold Signcryption Scheme in the Standard Model

SUN Hua, YAO Xuan-xia, LIU Xing-bing, HAN Xiao-guang

School of Information Engineering, University of Science and Technology, Beijing 100083, China

Received:2009-06-20 Revised:1900-01-01 Online:2010-04-28 Published:2010-04-28

摘要/Abstract

摘要：

提出了一种有效的基于身份的门限签密方案. 采用双线性对映射技术,基于Waters和Paterson提出的签名方案,设计了标准模型下可证安全的门限签密方案,并利用决策双线性DiffieHellman问题的困难性证明了方案的语义安全性，同时利用计算DiffieHellman问题的困难性证明了方案的不可伪造性. 相对随机预言模型下的同类方案,本文方案更具有实际意义.

关键词: 门限签密, 标准模型, CDH问题, DBDH问题

Abstract:

An efficient identity-based threshold signcryption scheme was presented. With bilinear pairings technology, a proved secure threshold signcryption scheme was designed in the standard model, based on Waters and Paterson’s signature scheme. We prove its semantic security on the hardness of decisional bilinear Diffie-Hellman problem and its unforgeability on the hardness of computational Diffie-Hellman problem. Compared with other schemes in the random oracle model, this scheme is more meaningful.

Key words: Threshold signcryption, Standard model, Computational Diffie-Hellman problem, Decisional Bilinear Diffie-Hellman problem

孙华姚宣霞刘行兵韩晓光. 标准模型下可证安全的基于身份门限签密方案[J]. 北京邮电大学学报, 2010, 33(2): 11-15.

参考文献

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标准模型下可证安全的基于身份门限签密方案

Provable Secure Identity-based Threshold Signcryption Scheme in the Standard Model

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