Liashenko G. Methods of increasing the efficiency of the remote biometric authentication system in telecommunication networks.

Liashenko G.Y. Methods of increasing the efficiency of the remote biometric authentication system in telecommunication networks. – Qualifying scientific work on manuscript rights. The dissertation for the competition PhD scientific degree on a specialty 172 "Telecommunications and Radio Engineering". – Kharkiv National University of Radio Electronics, Ministry of Education and Science of Ukraine, Kharkiv, 2024. The work solves the scientific and practical problem of improving remote biometric authentication systems in telecommunication networks by using network authentication methods. The purpose of this research is to improve the effectiveness of remote biometric authentication systems in telecommunication systems. This can be done through the use of network steganography methods. The specified method of biometric authentication allows to increase the immunity and efficiency of remote authentication systems in telecommunication systems. The improved method of information transmission by telecommunication systems during authentication allows us to increase the security of information transmission. Objectives of the study: ̶ Determine the preferred biometric authentication method based on the set of features. ̶ Determine the preferred method for generating a biometric template and offer recommendations for its application and protection. ̶ Determine the preferred method for network steganography based on the criteria of speed, secrecy, and bandwidth. Improve the method for transmitting biometric information by using network steganography to increase the security of remote authentication. ̶ Propose methods for increasing noise immunity during the transmission of user data. The object of research is the process of processing, protection and covert transmission of biometric data in telecommunication systems and networks. The subject of the research is mathematical models, methods and means of ensuring the effectiveness of the remote biometric authentication system in communication channels. Research methods – mathematical modeling methods; methods of the theoretical-multiple approach; methods of digital signal processing - for preparing an information signal and a container signal for embedding hidden data; multi-criteria optimization methods - for choosing the optimal methods according to the specified criteria. Scientific novelty of research results: For the first time, a biometric authentication method has been determined that is preferable in terms of interference immunity and error probability, the difference of which is the consideration of interference resistance. This made it possible to increase the interference resistance and efficiency of remote authentication systems in telecommunication networks. The method of processing user biometric data has been improved by choosing the optimal method of protecting the biometric template. This made it possible to increase the accuracy of authentication. For the first time, a network steganography method has been determined that is preferable in terms of speed, secrecy, and bandwidth. This made it possible to improve the efficiency of the remote authentication system by using the specified method. The method of remote biometric authentication in telecommunication networks has been improved, the difference of which is the consistent application of methods for forming a biometric template, matching transmission parameters with the quality of the communication channel, noise-resistant coding, and network steganography. This allowed to increase the security of information transmission and noise immunity.