大属性可公开追踪的密文策略属性基加密方案

doi:10.11896/JsJkx.190700131

计算机科学 ›› 2020, Vol. 47 ›› Issue (6A): 420-423.doi: 10.11896/JsJkx.190700131

大属性可公开追踪的密文策略属性基加密方案

马潇潇¹, 黄艳²

1 郑州信息科技职业学院郑州 450046;
2 河南省煤田地质局四队郑州 450016

发布日期:2020-07-07
通讯作者: 马潇潇(mxx1010@126.com)
基金资助:
国家自然科学基金项目(61602512);河南省重点研发与推广专项(科技攻关)项目(182102210575,192102310005);国家开放大学项目(G18A24166Q)

Publicly Traceable Accountable Ciphertext Policy Attribute Based Encryption Scheme Supporting Large Universe

MA Xiao-xiao¹ and HUANG Yan²

1 Zhengzhou Vocational University of Information and Technology,Zhengzhou 450046,China
2 The Fourth Team,Henan Bureau of Coal Geological Exploration,Zhengzhou 450016,China

Published:2020-07-07
About author:MA Xiao-xiao, born in 1984, Ph.D, lecturer.Her main research interests include image processing and information security.
Supported by:
This work was supported by the National Natural Science Foundation of China (61602512),Key Science and Technology Research ProJects of Henan Province (182102210575,192102310005) and National Open University ProJect(G18A24166Q).

摘要/Abstract

摘要： 密文策略属性基加密可以灵活实现“一对多”加密,尤其是大属性的属性基加密,可以支持任意的属性全集,因此在云计算、物联网、大数据等领域有广泛应用前景。然而,密文策略属性基加密中同一个解密私钥可以对应多个不同的用户,于是恶意用户敢于共享其(部分)私钥以获取非法利益。针对用户恶意共享解密私钥的问题,为实现公开追踪并验证泄露私钥拥有者身份的目的,文中提出一个支持大属性的可公开追踪的密文策略属性基加密方案,该方案可以支持任意单调的访问结构。并且,除了固定长度的系统公开参数外,不花费额外的存储代价就可以对泄露密钥的用户身份进行公开验证。

关键词: 大属性, 公开验证性, 密文策略, 云计算, 属性基加密, 追踪性

Abstract: Ciphertext policy attribute-based encryption can achieve one-to-many encryption flexibly.Especially,the large universe attribute-based encryption can support unbounded attribute universe,and has extensive applications in cloud computing,big data,etc.However,owing to the fact that a private decryption key may correspond to different users,thus malicious users dare to share their decryption privileges to others for profits.To solve this problem and publicly verify the identity of a leaked secret key,this paper proposes an accountable attribute based encryption scheme that supports large universe.The proposed scheme can support LSSS realizable access structures.In addition to the fixed-length system public parameters,the identity of the user who leaks the encryption key can be publicly verified without considering the constant storage cost.

Key words: Attribute based encryption, Ciphertext policy, Cloud computing, Large universe, Public verifiability, Traceability

中图分类号:

TP309

马潇潇, 黄艳. 大属性可公开追踪的密文策略属性基加密方案[J]. 计算机科学, 2020, 47(6A): 420-423. https://doi.org/10.11896/JsJkx.190700131

MA Xiao-xiao and HUANG Yan. Publicly Traceable Accountable Ciphertext Policy Attribute Based Encryption Scheme Supporting Large Universe[J]. Computer Science, 2020, 47(6A): 420-423. https://doi.org/10.11896/JsJkx.190700131

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大属性可公开追踪的密文策略属性基加密方案

Publicly Traceable Accountable Ciphertext Policy Attribute Based Encryption Scheme Supporting Large Universe

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