Scalable Secure MJPEG Video Streaming

In today´s world, more and more applications are developed for mobile devices and ever-increasing amount of communication happens over mobile devices and mobile networks. Though providing mobility and convenience, mobile devices generally do not offer intensive computations like their wired counterparts. In this paper we propose a set of methods that aims to protect video, specifically Motion JPEG (MJPEG) video streams, using selective data encryption. More precisely, our algorithm selects the most critical pixel information of MJPEG video as the input of encryption to keep itself lightweight while choosing and encrypting additional less-important video information when the environment allows. The proposed method was originated from the fact that JPEG images are encoded using prioritized pixel information. Experiment results show that the proposed algorithm performs well in terms of frame rate and CPU load at playback.