Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Implementation of cryptographic conversions of the messages transferred within industrial LON networks under GOST 28147-89 I.V. KAPGER, A.A. YUZHAKOV The problems of reliability and authenticity of industrial LON network messages related to the protection from unauthorized actions are analyzed. The possibility of sender authentication within LonTalk protocol is considered. The communication methods between LonWorks hubs by means of network variable and explicit messages are shown. Possibilities of encryption standard GOST 28147-89 are described, technical requirements to key information are shown. There were studied the possibilities of using cryptographic conversions of messages communicated in industrial LON networks in order to increase the reliability and authenticity of conversion. The implementation of symmetric encryption under GOST 28147-89 within LonTalk protocol functions in language Neuron C in firmware of knots constructed on Neuron Chip is suggested. Key words: LON, LonWorks, LonTalk, Neuron C, Neuron Chip, industrial buses, reliability, validity, authenticity, encryp-tion, cryptography, GOST 28147-89. E-mail: kapger@mail.ru