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| 完全安全的身份基在线/离线加密 | |
| 引用本文： | 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. |
| 作者姓名： | 王占君 李杰 马海英 王金华 |
| 作者单位： | 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 |
| 基金项目： | 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 |
| 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。 |
| 关 键 词： | 身份基在线/离线加密 完全安全性 双系统加密 可证明安全 |
| 收稿时间： | 2014-07-01 |
| 修稿时间： | 2014-08-23 |
Fully secure identity-based online/offline encryption |
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| 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. | |
| Authors: | WANG Zhanjun LI Jie MA Haiying WANG Jinhua |
| Affiliation: | 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 |
| 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. |
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