A Secure Cloud Storage and Forwarding with Timestamp Based Coordination

Cloud computing technology enables individuals and organizations to gain access to huge amount of computing resources without capital investment in pay per use fashion. Cloud users can outsource the valuable data to cloud as the local system can’t handle huge amount of data. However, the data when stored in third party servers, its confidentiality is a concern. The cloud has a collection of storage servers where data is stored in a distributed environment. From customer point of view the cloud storage system is untrusted. The cloud storage system use general encryption schemes to protect data confidentiality, but also limit the functionality of the storage system because a few operations are supported over encrypted data. Constructing a secure storage system that supports multiple functions is challenging when the storage system is distributed and has no central authority. This is a challenging problem to be addressed