Metadata Attribute Based Cipher-Key Generation System in Cloud

Abstract

With rapid development of cloud computing, more and more IT industries outsources their sensitive data at cloud data storage location. To keep the stored data confidential against untrusted cloud service providers, a natural way is to store only the encrypted data and providing an efficient access control mechanism using a competent cipher key-Cmxn, which is becoming a promising cryptographic solution. In this proposed model the cipher key is generated based on attributes of metadata. The key problems of this approach includes, the generation of cipher key and establishing an access control mechanism for the encrypted data using cipher key where keys cannot be revoked without the involvement of data owner and the metadata data server (MDS), hence makes data owner feels comfortable about the data stored. From this study, we propose a novel Metadata Attribute Based Key Generation scheme for cloud data security system by exploiting the characteristic of the data stored. We have implemented a security model that incorporates our ideas and evaluated the performance and scalability of the secured model. © Springer-Verlag Berlin Heidelberg 2014.