Data Storage Using Decentralized Access Control With Multiple Authentication in Clouds

Cloud computing reaches enormous growth in an Internet-Based development and so privacy and security are the most important issues. In this paper, we propose a new decentralized access control scheme with multiple KDC’s for securing data stored in cloud. In proposed scheme, the cloud provides the anonymous authenticity of the user through Third party auditor. Moreover, we implemented safe storage and access for creating a new file, modify the file and read the file in a cloud environment, a suitable encryption technique with key management is applied before outsourcing the data. We also secure access control by providing access to files with the policy-based access control using Attribute-Based Encryption (ABE) scheme. Multiple KDC’s for key management is provided to achieve the decentralized architecture. Private Key is the combination of the user’s credentials, so that high security will be achieved. The protocol supports multiple read and writes on the data stored in the cloud. Keywords—Multiple KDC’s, access control, decentralized, security, key management