چكيده به لاتين
Supervisory Control and Data Acquisition (SCADA), widely used in the control and monitoring of power industry and automated processes. Distributed energy resources and power sub-stations, and the use of distributed control systems (DCS), as well as the emergence of new computer networks technologies, put SCADA systems in more contacts with the new other telecommunication networks and new threats. So, introduction and design the new crypto-system, appropriate to the needs and limitations of the SCADA equipment and systems, is necessary. The most important of these limitations, are computing and storage resources, and sensitivity to delay.
Conventional SCADA communication protocols for local or remote automation of power sub-stations, did not benefit from any security mechanism, and therefore very vulnerable to cyber attacks. Standard SCADA public key cryptography methods are very costly, for their computational complexity and memory operating. The lattice based crypto system, is nearly new and fast method, having less complexity than other conventional public key methods, and its public and private key generation process is simple.
In this thesis, an asymmetric lattice based crypto system, with improvement in speed of multiplication of polynomials is introduced. The real and online implementation on received traffics from remote terminals units (RTU) and dispatching SCADA servers, confirms performance and advantages of the proposed method, Compared with other asymmetric cryptographic methods, like RSA and ECC. The results show that due to the lightweight nature of this new system, using proposed lattice based asymmetric algorithms, is suitable and convenient to secure critical and real-time power SCADA applications. As well as, a solution to resolve using composite order polynomial problem, is presented.
