• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2015, Vol. 37 ›› Issue (02): 238-244.

• 论文 • 上一篇    下一篇

基于可截取签名和属性加密的云存储访问控制方案

王彩芬,徐婷,张玉磊,杨小东   

  1. (西北师范大学计算机科学与工程学院,甘肃 兰州 730070)
  • 收稿日期:2014-06-17 修回日期:2014-09-18 出版日期:2015-02-25 发布日期:2015-02-25
  • 基金资助:

    国家自然科学基金资助项目(61163038,61262057);甘肃省自然科学基金资助项目(1308RJYA039);兰州市科技计 划项目(2013422);甘肃省高等学校科研项目(2013A014);西北师范大学青年教师科研能力提升计划项目(NWNULKQN1232);西北师范大学青年教师基金资助项目(NWNULKQN1312)

An access control scheme in cloud storage based on
content extraction signature and attribute encryption  

WANG Caifen,XU Ting,ZHANG Yulei,YANG Xiaodong   

  1. (College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China)
  • Received:2014-06-17 Revised:2014-09-18 Online:2015-02-25 Published:2015-02-25

摘要:

现有的云存储访问控制方案只能根据用户属性的不同发送不同的消息,因而消息利用率不高。针对这一缺陷,首先设计了一个基于ElGamal的可截取签名方案,然后基于该可截取签名方案结合属性加密体制提出了一种新的云存储访问控制方案。新方案在实现数据加密的同时,提供了细粒度的访问控制,将符合属性的子消息发送给相应的用户,提高了消息的利用率,具有更强的应用性。

关键词: 云存储, 访问控制, 可截取签名, 属性加密, 离散对数问题

Abstract:

Existing access control schemes in cloud storage can only send different messages according to users’ attributes, which leads to low utilization rate. In order to overcome this shortcoming, firstly, we design a content extraction signature scheme based on ElGamal; secondly, we propose a new access control scheme in cloud storage based on content extraction signature and attribute encryption system. The proposed scheme combines access control with attribute encryption and realizes finegrained access control at the same time. The scheme can send submessages to corresponding users depending on users’ attributes; it improves the utilization of the message and has better applicability.

Key words: cloud storage;access control;content extraction signature;attribute encryption;discrete logarithm problem