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Nomos Verlagsgesellschaft mbH & Co. KG eBooks

Quantum-Secured Satellite Communications: Navigating Legal and Cyber Challenges

Anna Blechová

Published Jan 1, 2025• 0 citations
Publisher
DOI
10.5771/9783748960546-35

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With the advancements in satellite communication, there arises a demand for the secure transmission of satellite and remote sensing images to the ground monitoring stations which has significant challenges due to the increased threat of cyber-attacks and the sensitive nature of those images. Existing classical cryptography methods fail to meet the advanced security demands. Thus, there arises a need for advanced cryptography techniques which ensure secure transmission of data in satellite communication. Recent advancements in quantum computing and research have shown that leveraging quantum mechanics and principles enhances security. We propose a novel quantum-based image encryption technique for securing satellite and remote sensing images during transmission named QCrypt. QCrypt utilizes the power of quantum chaotic maps, classic chaotic maps, and DNA encoding techniques to ensure the security of the images. QCrypt has been tested using a remote sensing image dataset and achieved increased performance in terms of resistance to histogram analysis, differential attacks, and chosen- plaintext attacks compared to traditional encryption methods. Our approach addresses the critical need for secure satellite data transmission and the use of quantum-based encryption to meet security demands.
Abstract Satellite-based quantum communication (QC) is an invaluable resource for the realization of a quantum network at the global scale. In this regard, the use of satellites well beyond the low Earth orbit gives the advantage of long communication time with a ground station. However, high-orbit satellites pose a great technological challenge due to the high diffraction losses of the optical channel, and the experimental investigation of such quantum channels is still lacking. Here, we report on the first experimental exchange of single photons from a global navigation satellite system (GNSS) at a slant distance of 20 000 km, by exploiting the retroreflector array mounted on GLONASS satellites. We also observed the predicted temporal spread of the reflected pulses due to the geometrical shape of the array. Finally, we estimated the requirements needed for an active source on a GNSS satellite, aiming towards QC from GNSS with state-of-the-art technology.