完全安全的等级身份基在线/离线加密

doi:10.11772/j.issn.1001-9081.2015.09.2522

计算机应用 ›› 2015, Vol. 35 ›› Issue (9): 2522-2526.DOI: 10.11772/j.issn.1001-9081.2015.09.2522

完全安全的等级身份基在线/离线加密

王占君¹, 马海英², 王金华¹

1. 南通大学理学院, 江苏南通 226019;
2. 南通大学计算机科学与技术学院, 江苏南通 226019

收稿日期:2015-04-15 修回日期:2015-06-22 出版日期:2015-09-10 发布日期:2015-09-17
通讯作者: 马海英(1977-),女,河南卫辉人,副教授,博士,主要研究方向:密码学、网络安全,m_hying@163.com
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;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(61402244,61371111,61272424,11371207,61272107);上海自然科学基金资助项目(13ZR1443100);南通市科技计划项目(BK2013050);江苏省大学生创新创业训练计划项目(201510304027z)。

Fully secure hierarchical identity-based online/offline encryption

WANG Zhanjun¹, MA Haiying², WANG Jinhua¹

1. School of Science, Nantong University, Nantong Jiangsu 226019, China;
2. College of Computer Science and Technology, Nantong University, Nantong Jiangsu 226019, China

Received:2015-04-15 Revised:2015-06-22 Online:2015-09-10 Published:2015-09-17

摘要/Abstract

摘要： 针对现有等级身份基加密(HIBE)中的加密算法很难适用于轻量级设备的问题,提出一种完全安全的等级身份基在线/离线加密机制。该机制将在线/离线密码技术引入到等级身份基加密中,其加密算法被分解成离线和在线两个加密算法。离线加密算法在不知道明文和接收者身份的前提下,对加密所需的幂乘等复杂计算进行预处理,使得在线加密算法一旦获知消息和接收者身份,仅需执行少量简单计算即可生成密文。实验结果表明,该机制极大地提高了HIBE的加密效率,非常适用于轻量级设备,并证明其具有完全安全性。

关键词: 在线/离线加密, 等级身份基加密, 完全安全性, 轻量级设备

Abstract: Since the encryption algorithm of Hierarchical Identity-Based Encryption (HIBE) is unsuitable for the lightweight devices, a fully secure Hierarchical Identity-Based Online/Offline Encryption (HIBOOE) scheme was proposed. This scheme introduced the online/offline cryptology into HIBE, and divided the encryption algorithm into two stages. Firstly, the offline encryption preprocessed most of heavy computations before knowing the message and the recipient, then the online encryption could be performed efficiently to produce the ciphertext once the recipient's identity and the message were got. The experiment results show that the proposed scheme greatly improves the encryption efficiency, and gets suitable for power-constrained devices. Moreover it is proven fully secure.

Key words: online/offline encryption, hierarchical identity-based encryption, full security, lightweight device

中图分类号:

TP309

王占君, 马海英, 王金华. 完全安全的等级身份基在线/离线加密[J]. 计算机应用, 2015, 35(9): 2522-2526.

WANG Zhanjun, MA Haiying, WANG Jinhua. Fully secure hierarchical identity-based online/offline encryption[J]. Journal of Computer Applications, 2015, 35(9): 2522-2526.

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完全安全的等级身份基在线/离线加密

Fully secure hierarchical identity-based online/offline encryption

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