通信学报 ›› 2014, Vol. 35 ›› Issue (Z2): 26-32.doi: 10.3969/j.issn.1000-436x.2014.z2.005

• 学术论文 • 上一篇    下一篇

快速解密的自适应安全KP-ABE方案

李琦1,2,马建峰1,2,3,熊金波4,刘西蒙2,5   

  1. 1 西安电子科技大学 计算机学院,陕西 西安 710071
    2 西安电子科技大学 陕西省网络与系统安全重点实验室,陕西 西安 710071
    3 通信信息控制和安全技术重点实验室,浙江 嘉兴,314033
    4 福建师范大学 软件学院,福建 福州 350108
    5 西安电子科技大学 通信工程学院,陕西 西安 710071
  • 出版日期:2014-11-25 发布日期:2017-06-19
  • 基金资助:
    国家自然基金委员会—广东联合基金重点资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;中央高校基本科研业务费专项基金资助项目

Adaptively secure key-policy ABE scheme with fast decryption

Qi LI1,2,Jian-feng MA1,2,3,Jin-bo XIONG4,Xi-meng LIU2,5   

  1. 1 School of Computer Science and Technology,Xidian University,Xi’an 710071,China
    2 Shaanxi Key Laboratory of Network and System Security,Xidian University,Xi’an 710071,China
    3 Science and Technology on Communication Information Security Control Laboratory,Jiaxing 314033,China
    4 Faculty of Software,Fujian Normal University,Fuzhou 350108,China
    5 School of Telecommunication Engineering,Xidian University,Xi’an 710071,China
  • Online:2014-11-25 Published:2017-06-19
  • Supported by:
    The Key Program of NSFC-Guangdong Union Foundation;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Fundamental Research Funds for the Central Universities

摘要:

已有的自适应安全 ABE(attribute-based encryption)方案的解密开销随着解密时用到的属性数量呈线性增长。针对该问题,提出了一种快速解密的自适应安全key-policy ABE(FKP-ABE)方案,在合数阶群上构造,支持任意可以表达为线性秘密分享体制(LSSS,linear secret sharing schemes)的单调访问策略,将解密开销降为常数级,并在标准模型下证明该方案是自适应安全的。

关键词: 基于属性的加密, 密钥策略, 自适应安全, 快速解密, 合数阶, 标准模型

Abstract:

In the existing adaptively secure ABE (attribute-based encryption) schemes,the decryption cost goes linearly with the number of attributes that are used in decryption.An adaptively secure key-policy ABE (FKP-ABE) scheme with fast decryption is proposed,where constant size of computation overhead is implemented in decryption.This scheme is constructed on composite order bilinear groups and supports any monotonic access structure that can be expressed by LSSS (linear secret sharing schemes).The proposed scheme is proved to be adaptively secure in the standard model.

Key words: attribute-based encryption, key-policy, adaptive security, fast decryption, composite order, standard model

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