Multi party secure data access management in cloud using user centric block chain data encryption

Abstract Cloud is the most dominant platform being used by different organizations towards providing service access to their users and customers. Services provided are intended to store and maintain data belongs to the organizations. Access restriction and data access management are identified as key issue at the point of storage management in cloud. The data security in cloud decides the Quality of Service (QoS) performance of the entire environment. Towards this, different approaches available to handle the storage management and access restriction issues. Still, the approaches are not up to the expected range of performance to maximize the QoS performance. Also, the methods faces higher data leakage, security issues as well as higher impact of tampering, which increases the requirement of block chains towards secure data access. To improve the performance, an efficient multi party secure data access management (MSDAM) is presented in this article. The method is focused to provide data handle in different parties which perform authentication on the data update requests. Also, the method distributes the key set and scheme set for different user at different session which is framed according to user centric features. The method initializes key sets and scheme sets to be distributed to the user in a least fact randomization model. Also, the method generates block chains for the user data which is encrypted using User Centric Block chain Encryption (UCBE) scheme where the key and schemes are selected with randomization technique. Similarly, the hash code has been generated using Distancing method. The proposed method improves the performance in all the QoS parameters of the cloud.