Safety analyse of cryptography protocol used within safety-related control systems in industry

Abstract

In the paper the possibilities of solution safety communication within area of safety-related control industry system are summarised with using cryptography techniques. Requirements to safety are based on generic standard for functional safety of Electrical/Electronic/Programmable Electronic (E/E/PE) systems IEC 61508 and standards, which define safety and security profiles in industrial network used in measurement and control systems. In mainly part of paper the model of safety-related communication protocol is described and overview of recommendations for selection of cryptography mechanisms and methods for their safety evaluation.