Side-channel attack resilience through route randomisation in secure real-time Networks-on-Chip

Leandro Soares Indrusiak, James Harbin, Martha Johanna Sepulveda
2017 2017 12th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC)  
Security can be seen as an optimisation objective in NoC resource management, and as such poses trade-offs against other objectives such as real-time schedulability. In this paper, we show how to increase NoC resilience against a concrete type of security attack, named side-channel attack, which exploit the correlation between specific non-functional properties (such as packet latencies and routes, in the case of NoCs) to infer the functional behaviour of secure applications. For instance, the
more » ... ransmission of a packet over a given link of the NoC may hint on a cache miss, which can be used by an attacker to guess specific parts of a secret cryptographic key, effectively weakening it. We therefore propose packet route randomisation as a mechanism to increase NoC resilience against side-channel attacks, focusing specifically on the potential impact of such an approach upon hard real-time systems, where schedulability is a vital design requirement. Using an evolutionary optimisation approach, we show how to effectively apply route randomisation in such a way that it can increase NoC security while controlling its impact on hard real-time performance guarantees. Extensive experimental evidence based on analytical and simulation models supports our findings.
doi:10.1109/recosoc.2017.8016142 dblp:conf/recosoc/IndrusiakHS17 fatcat:fb75uq3755gwfcu5v35hwuyp4m