Розробка протоколу захищеного обміну даними для спеціальних мереж

Abstract

Due to the rapid growth of special purpose networks scale, tasks complexity and the practical applications areas expansion, it is necessary to develop new protocols for such networks. Their operation should have high adaptability to the usage conditions and also should include reliable information security means and algorithms. The research purpose was to develop a protocol, algorithm, mathematical apparatus and related software for special networks using synchronous and asynchronous encrypted data packets transmission and coded commands. For encryption, after existing algorithms analysis completion, the AES symmetric algorithm was chosen. On the basis of the conducted analysis results, a new protocol for secure data exchange in special purpose networks was developed and tested taking into account special networks features, including operations in difficult situations that meet Ukrainian and international standards. Cryptographic protection algorithms for information, circulating in such networks, were developed. The developed algorithms allow to protect the information flows for decentralized cellular and ad hoc networks in the field conditions. The developed software and algorithmic support were tested by creating physical special purpose networks models and conducting network interaction testing of their nodes. Conducted practical experiments for the developed software-algorithmic approbation in laboratory conditions confirmed its applicability and efficiency and proved the potential possibility of its implementation. The conducted testing showed that the encryption adds delays due to the developed protocol implementation is up to several tens of ms, which allows comfortable transmission of signals, text, commands, video, images and sound. The developed protocol application will increase the special networks reliability, security and control in the field