Securet3d: An Adaptive, Secure, and Fault-Tolerant Aware Routing Algorithm for Vertically-Partially Connected 3D-NoC

Multiprocessor systems-on-chip (MPSoCs) based on 3-D networks-on-chip (3D-NoCs) are crucial architectures for robust parallel computing, efficiently sharing resources across complex applications. To ensure the secure operation of these systems, it is essential to implement adaptive, fault-tolerant mechanisms capable of protecting sensitive data. This work proposes the Securet3d routing algorithm, which establishes secure data paths in fault-tolerant 3D-NoCs. Our approach enhances the Reflect3d algorithm by introducing a detailed scheme for mapping secure paths and improving the system's ability to withstand faults. To validate its effectiveness, we compare Securet3d with three other fault-tolerant routing algorithms for vertically-partially connected 3D-NoCs. All algorithms were implemented in SystemVerilog and evaluated through simulation using ModelSim and hardware synthesis with Cadence's Genus tool. Experimental results show that Securet3d reduces latency and enhances cost-effectiveness compared with other approaches. When implemented with a 28-nm technology library, Securet3d demonstrates minimal area and energy overhead, indicating scalability and efficiency. Under denial-of-service (DoS) attacks, Securet3d maintains basically unaltered average packet latencies on 70, 90, and 29 clock cycles for uniform random, bit-complement, and shuffle traffic, significantly lower than those of other algorithms without including security mechanisms (5763, 4632, and 3712 clock cycles in average, respectively). These results highlight the superior security, scalability, and adaptability of Securet3d for complex communication systems.