Private Aggregation Scheme Based on Erasable Data-Hiding in Wireless Sensor Networks

A privacy-preserving aggregation scheme based on the designed erasable data-hiding technique was proposed for sensor networks. With this technique, each sensory data item could be hidden by the sensor node which collects it without data exchange, then, the hidden data is reported to the cluster head, and finally, the aggregation result can be recovered from the hidden data in the cluster head which doesn't have any data used for data-hiding. Extensive analysis shows that the proposed scheme is able to preserve privacy more efficiently while consuming less communication overhead and computational overhead, and also has a good resistance to data loss.