A Multicycle Pipelined GCM-Based AUTOSAR Communication ASIP

In this paper, we explore two pipeline techniques to enhance performance of communication operations in AUTomotive Open System Architecture (AUTOSAR)-based automotive electronic control units (ECUs), and securing these communication operations using an enhanced two-layer process based on the highly secure Galois/Counter Mode of Operation (GCM) algorithm. Our work is based on extending a previous work that implemented three versions of AUTOSAR communication (COM) application-specific instruction set processor (ASIP). We made two pipelined architectures on top of COM ASIP V3 (i.e. COM ASIP V4 and COM ASIP V5). These new versions of COM ASIP are able to handle all operations (i.e. transmitting signals/long signals, receiving signals/long signals, calculating hash, or verifying hash for protocol data units (PDUs) containing these signals using GCM) of our previously implemented COM ASIPs in a pipelined fashion. The experimental results show that COM ASIP V4 has a speedup of 2.25x to 2.39x over COM ASIP V3, and COM ASIP V5 has a speedup of 3.27x to 5.5x over COM ASIP V3. They also show that throughput of these new versions of COM ASIP is much more, 100x to 338x, than throughput required by Controller Area Network Flexible Data Rate (CAN FD) and FlexRay communication buses.