Trust Establishment in Cooperating Cyber-Physical Systems
نویسندگان
چکیده
Cooperating systems are systems of systems that collaborate for a common purpose. In this work, we consider networked cooperating systems that base important decisions on data gathered from external sensors and use external actuators to enforce safety critical actions. Typical examples of cooperating cyberphysical systems are critical infrastructure process control systems. Such systems must not only be secure, they must be demonstrably so. Using the example of a hydroelectric power plant control system, this paper analyzes security threats for networked cooperating systems, where sensors providing decision critical data are placed in non-protected areas and thus are exposed to various kinds of attacks. We propose a concept for trust establishment in cyber-physical cooperating systems. Using trusted event reporting for critical event sources, the authenticity of the security related events can be verified. Based on measurements obtained with a prototypical realisation, we evaluate and analyze the amount of overhead data transmission between event source and data verification system needed for trust establishment. We propose an efficient synchronisation scheme for system integrity data, reducing network traffic as well as verification effort.
منابع مشابه
A Hybrid Trust Management Framework for Wireless Sensor and Actuator Networks in Cyber-Physical Systems
To secure a wireless sensor and actuator network (WSAN) in cyber-physical systems, trust management framework copes with misbehavior problem of nodes and stimulate nodes to cooperate with each other. The existing trust management frameworks can be classified into reputation-based framework and trust establishment framework. There, however, are still many problems with these existing trust manag...
متن کاملReconfiguration Testing for Cooperating Autonomous Agents
In order to verify reconfiguration of interacting autonomous agents to be exclusively beneficial and never hazardous to cyber-physical systems, this article suggests a systematic approach based on incremental model-based testing and illustrates its application to cooperating mobile robots.
متن کاملAutonomous Agents and Human Interpersonal Trust: Can We Engineer a Human-Machine Social Interface for Trust?
There is a recognized need to employ autonomous agents in domains that are not amenable to conventional automation and/or which humans find difficult, dangerous, or undesirable to perform. These include time-critical and mission-critical applications in health, defense, transportation, and industry, where the consequences of failure can be catastrophic. A prerequisite for such applications is t...
متن کاملThe Case for Energy-aware Trust Establishment in Dynamic Networks of Cyber Physical Devices
In a dynamic network, cyber physical devices collect and share data by opportunistically connecting with each other. By their very nature, computations in dynamic networks may be distributed among several untrusted devices, some of which may be malicious in intent. It is therefore key to have mechanisms that allow one device to establish the trustworthiness of another device in the dynamic netw...
متن کامل