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Research Article Open Access
cloud computing is the delivery of computing services over the Internet. Whether they realize it or not, many people use cloud computing services for their own personal needs. Here preserving the data privacy and identity privacy is somewhat difficult task in sharing a data in multi owner manner. In this paper we propose a secure multi owner data sharing schema by leveraging group signature and using dynamic broadcast encryption techniques any members can share and data with other users. And here numbers of revoked users are independent with the storage over head & encryption computation cost. In this paper the main goal is to provide the security for the data and demonstrate the efficiency of our schema in experiments.