期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2017
卷号：5
期号：3
页码：5679
DOI：10.15680/IJIRCCE.2017.0503138
出版社：S&S Publications
摘要：Secure data may implicitly contain confidential information. This leads to privacy concerns if theprovided information is misused. The problem of simultaneously achieving fine-grainedness, scalability, and dataconfidentiality of access control actually still remains unresolved. This project addresses this issue by using accesspolicies based on data attributes that allow the data owner to delegate most of the computation tasks involved in finegraineddata access control to untrusted servers without disclosing the underlying data contents. The goal is achievedby exploiting and uniquely combining techniques of attribute-based encryption (ABE) and proxy re-encryption. Theproposed scheme also has salient properties of user access privilege confidentiality and user secret key accountability.The proposed scheme enables the data owner to delegate most of the computation overhead to powerful servers.Confidentiality of user access privilege and user secret key accountability is achieved.
