Secret Sharing-Based IoT Text Data Outsourcing: A Secure and Efficient Scheme

Secret Sharing has been recently used as an alternative approach to solve privacy-preserving issues in cloud-based data outsourcing, for overcoming the challenges faced when encryption-based methods are adopted. In this work we revisit secret sharing-based text data outsourcing schemes and focus on their applications into an Internet-of-Things (IoT) system with resource constrained IoT devices as clients. We propose a new method which is secure against common attacks to secret sharing-based text data outsourcing schemes. Compared with the existing works under the same assumption that the cloud servers are possibly colluded, our scheme is more efficient and supports multiplication based operations.