A cryptographic, discrete cosine transform and frequency domain watermarking approach for securing digital images

Abstract

The growth in multimedia messaging, social networks, live streaming and in other applications have increased overtime. The rise in the engagement of Unmanned Ariel vehicles for agricultural, surveillance and deliver services has become a debate in its security and engagement in today’s cyber physical space. Authentication and security between control units and these devices are of paramount importance. And also a fast and energy efficient algorithms are highly needed to ensure uncompromised situation of compunctions with these devices. Due to fictitious activities over communication channels by unauthorized users, security and authentication of such transmissions are needed to provide privacy, authentication and confidentiality. In this paper, we proposed a cryptographic encryption technique and a discrete cosine transform for encryption and compression of the transmitted image. We further engaged a frequency domain watermarking approach for the authentication of the digital images. These approaches were engaged to provide several security layers for transmitted image and at the, results showed to be very effective. The implementation in this work was simulated in MATLAB