TRABALHOS PUBLICADOS
2013 |
An Overview of Security Aspects of the PTP Algorithm and their Effects in Networked Control Systems with TDMA under Time Discontinuity Faults Proceedings Article Junior, Eloy Martins Oliveira; Oliveira, Marcelo Lopes; Souza, Resumo | Links | BibTeX | Tags: Cyber Security, Time, Time Synchronization @inproceedings{Eloy2013Cyberb,Current systems such as satellites, aircrafts, automobiles and traffic controls are becoming increasingly complex and/or highly integrated as prescribed by the SAE- ARP-4754A Standard. Such systems operate in distributed environments such as Networked Control Systems(NCS), which time synchronization among different frequently require devices, levels and granularities aiming to minimize the time de- synchronizations. However, the common approaches for this do not address the time discontinuities that occur during re- synchronizations and that may cause accidental faults. These faults may have serious consequences for safety. Even worse, these faults may be maliciously explored to cause serious consequences for security. Towards avoiding both, this paper presents an overview of security aspects of the PTP algorithm and their effects in NCS with TDMA under time discontinuity faults. It is based on a review of the literature, discussions and simulations of a NCS with TDMA which requires time synchronization using PTP. This overview show preliminarily that: 1)the effects of time discontinuities in NCS may be serious; 2)new techniques and analysis must be developed to address the time discontinuities for the improvement of security of NCS. |