Data security is major challenges today. It plays a crucial role in modern energy infrastructure; and how to process a huge amount of data received from these devices. Cloud computing, a technology that has procedure resources on demands, could be a wise candidate to deal with these challenges since it's several smart properties like energy saving, worth saving, agility, scalability, and flexibility. Consumer can furthermore do a resourceful and inexpensive approach for info sharing among group members inside the cloud with the characters of low maintenance and small management value. Consequently, our purpose is offer security guarantees for sharing info files since they're outsourced. Unfortunately, because of the frequent modification of the membership, sharing info whereas providing privacy-preserving remains a tough issue, particularly for a scepticism cloud due to the collusion attack. During this work, we tend to tend to propose a secure info sharing scheme for dynamic members. Firstly, we tend to tend to propose a secure methodology for key distribution with none secures communication channels, and additionally the users can securely acquire their personal keys from group manager. another time once they're revoked. Thirdly, we tend to look after the design from collusion attacks that recommend that invalidate users cannot get the first file although they conspire with the untrusted cloud. Finally, our scheme will do fine efficiency, that suggests previous users needn't to update their personal keys for the case either a new user joins inside the cluster or a user is revoked from the cluster.