A Method for Determination of Key Distribution Period Using QoS Function

The integration of the SCADA network into IT networks is progressing in the context of automation and economics of power system, which makes the SCADA network of power system also revealed to increased cyber attacks. Considering this situation, SCADA network is also required to be secured like any other communication network. There are several ways of cyber security, but we consider the encryption of information on SCADA network in this paper. Encryption makes additional load on network traffic while it improves the security of network. We propose a method for balancing the security with the network performance.