Aleksander M. Methods and models to provide wireless sensor networks security

Thesis is devoted to applied scientific research problem to develop new methods and models for wireless sensor networks (WSN) and its components security against cyberattacks directed on information resources confidentiality, integrity and availability violation. In the work the analysis of WSN (architecture, protocols) was carried out and it was pointed on WSN vulnerabilities against cyberattacks that violate information resources con-fidentiality, integrity and availability. New mathematical models for information structures of Dos-attacks threats probabilities were proposed and these give possibilities to assess level of influence by threats parameters of WSN. The model of secured communication "client-server-gateway-node" was developed and it allows cyberattack (directed on WSN) type identifying and countermeasures defining. Also the method of message reconstruction was developed and it gives a possibility to provide messages integrity 11% on favor of known methods in conditions of WSN cyberthreats realization. The method of probability packet marking in WSN was improved and it allows to monitor WSN and define cyberattack sources accurately on 17%. The structural and analytical model of information and control systems of WSN survivability that provide effective service strategy choosing by technical and informative readiness relatively to defects. The computation technologies based on elliptic curves and provide high cryptographic performance in information and control systems of WSN. The structural and analytical models of calculators based on elliptic curves in information and con-trol systems that allow to minimize elliptic curves for the security of information and control systems of WSN. And also the structural and analytical models for discrete logarithm calcula-tion for curves on field GF(2m) that allow high performance cryptographic devices construction based on elliptic curves and these models also provide high detection rate (more than 102 of times) of cryptanalytic attacks on information and control systems of WSN. Software for information security and practical recommendations for proposed methods and models implementation were also created.