SECURITY CONSTRUCTIONS USED WITHIN CONTROL AND INFORMATION SYSTEMS INTEGRATION IN MANUFACTURING PLANTS CONDITIONS

Issue of the article represents the actual problem of security constructions applying which are an important part of control and information systems integration in conditions of industrial plants. A special section is dedicated to the issue of the use the cryptographic mechanisms in industrial communications system especially for applications of safety-relevant (SR) processes control with a higher integrity level SIL (Safety Integrity Level) and the possibilities of their evaluation based on mathematical approaches.