Exploiting Process Variations to Secure Photonic NoC Architectures From Snooping Attacks

The compact size and high wavelength-selectivity of microring resonators (MRs) enable photonic networks-on-chip (PNoCs) to utilize dense-wavelength-division-multiplexing (DWDM) in their waveguides, as a result, attain bandwidth on-chip data transfers. Unfortunately, hardware Trojan (HT) PNoC can manipulate the electrical driving circuit its MRs cause snoop from neighboring wavelength channels shared waveguide, which introduces serious security threat. This article presents framework that utilizes process variation-based authentication signatures along with architecture-level enhancements protect against data-snooping HT during unicast well multicast transfers PNoCs. evaluation results indicate our improve across various architectures minimal overheads up 14.2% average latency 14.6% energy-delay-product (EDP).