The owner of outsourced data should be given the possibility to control who accesses her data and how. More specifically, the data owner should be allowed to share the ownership of her data, give read/write rights to users of her choice and finally revoke such rights at any point in time. Therefore, we envisage in TREDISEC to develop mechanisms for access policy enforcement. Given the multi-tenant nature of file sharing use-cases, they require solution that control and regulate data access.
