An effective group formation in the cloud based on Ring signature

The major benefit in cloud computing is low maintenance, which benefits both the provider and the requester. The service is made available to the requestor either by a single owner or a multiowner group. In single owner group, the process of maintenance, monitoring, availability is done by a single person known as group manager. The manager is over headed with the security work, maintenance etc. Now we focus our work on multiowner group and the importance of mulitiowner group are jordown. In Multiowner group, the encryption overhead is reduced by using Ring signature and we prove Ring signature is more secure than Group signature and dynamic broadcast encryption techniques. In ring signature a particular user identity is taken and encrypted in such a way, the encryption techniques doesn´t change and the user key is changed automatically, when a user leaves the group. The work that is been focused in this paper towards the group formation, to authenticate the user and validate their key using ring signature.