AN INTEGRATED APPROACH TO DATA CONFIDENTIALITY IN 5G/6G BASED ON LDPC CODES AND POST-QUANTUM CRYPTOGRAPHY

Relevance of the research. In the current conditions of the development of next-generation wireless networks (5G/6G), there is a growing need to ensure a high level of secrecy and data protection in the face of complex cyberthreats and the prospect of quantum attacks. The use of LDPC codes in combination with post-quantum cryptography methods creates the possibility of a comprehensive approach that allows simultaneously increasing the reliability of coding and resistance to cryptanalytic attacks, while maintaining high network throughput. Subject of the research. Methods and models of data secrecy in 5G/6G mobile networks based on LDPC codes integrated with post-quantum cryptography algorithms, as well as the principles of their combination to achieve increased resistance to attacks. Purpose of the research. Development and justification of an integrated data secrecy model that provides an optimal combination of coding and cryptography mechanisms to increase the level of security and efficiency of information processing in high-speed 5G/6G networks. The following results were obtained. A comprehensive analysis of authentication and coding methods in 5G and 6G networks was conducted. A comparative table of authentication and coding mechanisms, including post-quantum cryptographic algorithms (PQC), was developed. The advantages and limitations of existing 5G authentication methods were identified and the integration of PQC was proposed to improve security in 6G networks. The principles of LDPC codes were analyzed and their effectiveness in improving data confidentiality was demonstrated. An integrated data hiding model was proposed that combines LDPC coding with post-quantum cryptography to ensure both high-speed communication and resistance to quantum attacks. The presented models allow formalizing the processes of authentication, data transmission, and increasing confidentiality in next-generation networks, as well as their real-time adaptation to various network conditions and threat levels. Conclusions. An integrated approach to data secrecy based on LDPC codes and post-quantum cryptography allows for significantly increasing the resilience of 5G/6G communication systems to current and future threats, ensuring a balance between speed, reliability, and cryptographic robustness.