Secure and Efficient Ey Distribution for Scada
R. Udayakumar, Velu Khanaa · 2014
Supervisory Control and Data Acquisition (SCADA) is a computer based monitoring tool which controls and monitors the process and take supervisory decisions accordingly. These days' modern industrial facilities have command and control systems. So need for SCADA connection to open network increases and thereby increases the issues in security. One critical aspect for SCADA system is that the communication needs to be secured. SCADA consists of three types of communication equipments and data transmitted between these equipments have to be protected by encryption. A secure key management is essential for data encryption. Several key management schemes already exist for static and dynamic groups. Perfect secrecy can only be achieved in multicast groups by ciphering data sent o group with a different key every time a member joins or leaves the group. This paper proposes ternary tree based new technique to establish a contributory secure group key where ternary tree has at most three children per node. This method provides some advantage over the existing binary tree based technique. As a result, the scheme supporting broadcast and multicast efficiently is proposed.