完全安全的身份基在线/离线加密

计算机应用 ›› 2014, Vol. 34 ›› Issue (12): 3458-3461.

完全安全的身份基在线/离线加密

王占君¹,李杰²,马海英³,王金华¹

1. 南通大学理学院,江苏南通 226007;
2. 济源职业技术学院计算机系,河南济源 454650;
3. 南通大学计算机科学与技术学院,江苏南通 226019

收稿日期:2014-07-01 修回日期:2014-08-23 出版日期:2014-12-01 发布日期:2014-12-31
通讯作者: 马海英
作者简介:王占君(1978-),男,河南鹤壁人,讲师,硕士,主要研究方向:密码学、Hopf代数；李杰(1979-), 女,河南济源人,讲师,硕士,主要研究方向:网络安全；马海英(1977-),女,河南卫辉人,讲师,博士研究生,主要研究方向:密码学、网络安全；王金华(1963-),男,江苏南通人,教授,博士,主要研究方向:编码密码学、组合设计理论。
基金资助:
国家自然科学基金资助项目;国家科技支撑计划项目;上海自然科学基金资助项目;江苏省高校自然科学研究项目;南通市科技计划项目

Fully secure identity-based online/offline encryption

WANG Zhanjun¹,LI Jie²,MA Haiying³,WANG Jinhua¹

1. School of Sciences, Nantong University, Nantong Jiangsu 226007, China;
2. Department of Computer, Jiyuan Vocational and Technical College, Jiyuan Henan 454650, China;
3. School of Computer Science and Technology, Nantong University, Nantong Jiangsu 226019, China

Received:2014-07-01 Revised:2014-08-23 Online:2014-12-01 Published:2014-12-31
Contact: MA Haiying

摘要/Abstract

摘要：

针对现有身份基在线/离线加密(IBOOE)机制仅满足较弱的选择安全模型,不允许攻击者适应性选择攻击目标的问题,将在线/离线密码技术引入到完全安全的身份基加密方案中,提出一种完全安全的身份基在线/离线加密方案。基于合数阶群上的3个静态假设,利用双系统加密技术证明该方案满足完全安全性。与知名的身份基在线/离线加密方案相比,所提方案不仅极大地提高了在线加密的效率,而且更能满足实际系统中对完全安全性的需求。

Abstract:

The existing Identity-Based Online/Offline Encryption (IBOOE) schemes do not allow the attacker to choose the target identity adaptively, since they are only proven to be secure in the selective model. This paper introduced the online/offline technology into fully secure Identity-Based Encryption (IBE) schemes, and proposed a fully secure IBOOE scheme. Based on three static assumptions in composite order groups, this scheme was proven to be fully secure with the dual system encryption methodology. Compared with the famous IBOOE schemes, the proposed scheme not only greatly improves the efficiency of the online encryption, but also can meet the demands for complete safety in the practical systems.

中图分类号:

王占君李杰马海英王金华. 完全安全的身份基在线/离线加密[J]. 计算机应用, 2014, 34(12): 3458-3461.

WANG Zhanjun LI Jie MA Haiying WANG Jinhua. Fully secure identity-based online/offline encryption[J]. Journal of Computer Applications, 2014, 34(12): 3458-3461.

参考文献

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