Data Sharing In Multi-Owner Style With Revocation Mechanism
With rapid elasticity, transparency and low maintenance, cloud provides the convenient and best solution for data
sharing among the cloud users in a group, and pay-as-you-go manner. Data storage is the most fundamental service used by the
users to store and share data. Sharing the data becomes complex task in a multi-owner manner, still maintaining privacy and
data preservation is a challenging issue, this is because of frequent membership change. Therefore we propose Data sharing
in multi-owner style with revocation mechanism in cloud for dynamic groups by using the techniques called dynamic
broadcast encryption technique, group signature technique and recovery mechanism. Meanwhile the number of revoked are
independent of computation cost of encryption and storage overhead. So this guarantees user can share the data and maintain
back up of the data in case of data/file lost.
Keywords— Cloud computing, Privacy preserving, Data sharing, multi-owner manner, Dynamic broadcast encryption,
access control, group signature, data backup.