Section: Bilateral Contracts and Grants with Industry

Bilateral Contracts with Industry

Follow up to the AnaStaSec project

• Title: Analyse de propriété de sécurité

• Type: Research contracts funded by AirBus France

• Duration: March 2019 - August 2018 and November 2019 - March 2020

• Inria contact: Jérôme Feret

• Abstract: An emerging structure in our information processing-based society is the notion of trusted complex systems interacting via heterogeneous networks with an open, mostly untrusted world. This view characterises a wide variety of systems ranging from the information system of a company to the connected components of a private house, all of which have to be connected with the outside.

  The goal of these constracts is to analyse an application that is used to filter messages from higher-level security regions to lower-level ones in trusted complex systems. This application shall check that messages are well-formed and that they match with existing requests. Moreover, so as to limit potential flows of information, one shall prove that the internal state of buffers are reset between the processing of each packet.

  To certify these properties, the front-end of Astrée has been upgraded with new directives to specify the properties of interest, and the analysis has been tuned to improve the analysis : 1) ghost variables are used to record the value of buffers between each packet processing so that already existing relational domains can prove that they are restored to the correct value, and 2) data-partitioning strategies have been implemented to separate the different modes of usage.