A Distributed Monitoring Approach for Trust Assessment Based on Formal Testing

Communications systems are growing in use and in popularity. While their interactions are becoming more numerous, trust those interactions now becomes a priority. In this paper, we focus on trust management systems based on observations of trustee behaviors. Based on a formal testing methodology, we propose a formal distributed network monitoring approach to analyze the packets exchanged between the trust or, trustee and other points of observation in order to prove the trustee is acting in a trustworthy manner. Based on formal "trust properties", the monitored systems behaviors provide a verdict of trust by analyzing and testing those properties. Finally, our methodology is applied to a real industrial DNS use case scenario.