Abstrakt

Robust Data Authenticity and Group Signature Mechanism for Enhanced Cloud Security Process

D.Sharmili, B. Palani Chelvam

Cloud storage enables users to remotely store their data and enjoy the on-demand high quality cloud applications without the burden of local hardware and software management. In order to achieve a secure and dependable cloud storage service, a secure multi-owner data sharing scheme is proposed according to which any user in the group can securely share data with others by the un-trusted cloud. For reducing the execution time of the keys generation at the user or data owner side, the Group manager is used, who is responsible for generating the group keys for communication between the data owners in the cloud. In addition to the validation of data authenticity by secure group signature mechanism, it is also used for signature generation and verification procedure for enhanced data integrity mechanism to the data being shared in the cloud storage. Thus provides secure and privacy-preserving access control to users, which guarantees any member in a group to anonymously utilize the cloud resource. Moreover, Initiator is introduced which acts as the middleware between the group manager and the data owners for sending the key generation request to Group manager with a list of group members, and provides key confidentiality for enhanced security of cloud data.