Concept of Hardware-Software Complex for Secure Data Transmission Using Quantum Key Distribution

The article presents the concept of developing a hardware-software complex (HSC) designed for secure data transmission in mobile networks of $5 \mathrm{G} / 6 \mathrm{G}$ standards using advanced quantum key distribution (QKD) technologies. The scientific novelty of the work lies in proposing a mobile communication architecture that integrates quantum cryptographic methods to address current security challenges amid the development of next-generation networks and the emergence of threats from quantum computing. The concept involves creating a complex that combines hardware and software components within a unified architecture, ensuring secure exchange of text, audio, and video messages even in the presence of potential attacks using quantum computing. The proposed concept demonstrates the feasibility of integrating QKD into mobile network infrastructure, laying the foundation for building quantum-resistant communication systems under real-world operational conditions. The main contribution of this work is the development of a universal solution capable of maintaining data integrity and confidentiality in mobile communication channels by leveraging the fundamental principles of quantum physics. The practical relevance of the concept is confirmed by its potential to be adapted for use in critically important infrastructure scenarios and its compatibility with various mobile operating systems, offering a promising approach to ensuring secure data transmission in the context of quantum technology advancement and increased data transmission speeds in 5G/6G networks.