期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2013
卷号：4
期号：2
页码：610-613
语种：English
出版社：Ayushmaan Technologies
摘要：Cloud computing has appeared as one of the most leading standards in the IT engineering in past decades. Since this innovative computing technology requires users to deliver their valuable data to cloud service providers, there have been growing security and privacy concerns on data from outside supplier. Several schemes employing attribute-based encryption (ABE) have been suggested for access control of outsourced data in cloud computing; however, most of them suffer from rigidity in applying complex access control strategies. As the cloud uses virtualization in back end all the methods implemented in real platforms can also be implemented in cloud. In several scattered systems a user should only be able to access data if a user holds a certain set of passes or attributes. Recently, the only method for enforcing such policies is to employ a trusted server to store the data and intermediate access control. However, if safety of server storing the data is compromised, then the secrecy of the data will be exposed.
