Hiding Data Hiding

Data hiding is a technique to embed secret data into cover multimedia for covert communication. In this letter, we propose a method to disguise the data hiding tools, including a data embedding tool and a data extraction tool, as a deep neural network (DNN) with ordinary task. After training the DNN for both style transfer and data hiding tasks, while the DNN may transfer the style of an image to a target one, it can be also used to embed secret data into a cover image or extract secret data from a stego image when inputting a trigger signal. In other words, the tools of data hiding are hidden to avoid arousing suspicion.