Abstract
Collaborative editing applications for cloud environment play an important role in many fields and communities since they allow users to communicate and collaborate using their mobile devices. Mobile devices are usually cloned in the cloud to minimize computation cost and energy consumption. Moreover, these mobile and cloud interactions lead to online and offline switching in easy and continuous ways in order to edit shared multimedia documents. However, the main concern of these applications is still maintaining consistent and secure copies of the shared documents with low latency and high local responsiveness. Indeed, appropriate access control models are needed to preserve the features of collaborative editing applications when combining mobile and cloud environments. In this paper, we present a study on existing cloud-based collaborative editors and the current state of the art of access control models used in the collaborative edition context. This study has raised a series of shortcomings that have enabled us to sketch a new access model for deploying securely mobile collaborative editing applications in the cloud.