期刊名称：International Journal of Computer Science and Engineering Communications
电子版ISSN：2347-8586
出版年度：2015
期号：3910
页码：1069-1075
出版社：Scientist Link Group of Publications
摘要：Cloud computing confers strong economic advantages, but many clients are reluctant to implicitly trust a third-party cloud provider. Cloud provider is also not directly entrusted with key material, but naive schemes often prove difficult to scale. The confidentiality of data stored in cloud platform must be protected from being read in the clear by cloud provider. This work focuses on the Improvement of existing traditional attribute-based encryption scheme to allow only authorized users to access the cloud data based on possession of right attributes and also a model based on the principle of dynamic data re-encryption is applied, to a cloud computing system in a unique way to provide more security to the user data stored. The idea is proposed to be efficient for resource-constrained mobile users by delegating computation and requests to a cloud provider or trusted authority, without compromising security. Also, a backup of stored data is done by a separate server accompanied by an automated auditing service while retrieving to support exact delivery of data.
