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：2018
卷号：6
期号：4
页码：3734-3741
DOI：10.15680/IJIRCCE.2018.0604085
出版社：S&S Publications
摘要：Now a day Cloud Services is very popular mode for company to store their data online. Cloud services
has maintain many services data storage, big data management, information system, data security and etc. and its also
used for storage personal, private and secure data. This service provides better technical management for intended users
to share their data securely. In this we combine time and attribute factor for time-sensitive data in public cloud storage.
And also introduce the fine-grained access control for two factor authentication in web based cloud storage. We
propose new advanced ABE(Attribute-Based Encryption) technique, also propose two factor authentication in which
user have to go through two authentication verification typically password based and mobile based. For fine-grained
access control we design systematic approach for time–sensitive data. In TAFC model, the access policy attribute store
in secret key. To overcome this we design two files one is original file and another one is meta-data file. In meta-data
file the access policy attribute stored in separately. Original file secret key and meta-data file secret key are dependent
on each other. In our proposed system, if user want to change or update any document, he/she directly change or
remove document without any encryption and decryption. By using our proposed system the size of cipher-text is
remain constant. Implementation, analysis and demonstrate shows that our scheme is efficient, secure and effective.
关键词：Cloud Storage; Access control; Time;sensitive data; Fine granularity; Two;Factor;
