Ensuring consistency file authentication over encrypted files in the cloud

Cloud security becomes the biggest research issue in the today´s world where the cloud stored file content access need to be limited to only the authorized users and also it need to be protected from the cloud servers where the file contents are stored. In the existing method, a protocol is introduced which is based on the Deterministic Finite Automata (DFA) authentication which allows a clients to authenticate the server behaviours whether they are involved in any malicious activities are not. However this lacks from the file update, in which it will be complex to update the file contents which are modified and accessed by the clients concurrently. In this work, the fork consistency approach is integrated with the existing protocol to achieve a consistency property.