Real-time control systems secured communication

Abstract As demands on privacy, personal data and in general secure and responsible dealing with confidential personal information are growing, the need for their protection grows as well. When confidential data are being transported, there is a high risk of their stole and misuse or complete loss. That's why a question of secure communication is one of the most actual topics of a present day. It's not just information technologies problem, but since embedded and automation devices are more and more sophisticated, able to use for example internet technologies, this question also concerns the area of automation and control systems. Especially in complex distributed control and measurement systems that supports remote control, internet visualization, wireless transfers or remote data acquisition, it is the primary goal to ensure the most secure and reliable communication. This work deals with securing the communication of embedded systems connected over public networks and internet. To fulfill that, PKI technologies are used. Benefits of secured communication are employed in Guardian system, patient monitoring platform developed at Technical University of Ostrava.