Today's embedded systems require resource-aware acceleration engines, which support advanced cryptographic algorithms such as elliptic-curve cryptography (ECC). The authors present an application-specific co-processor for digital signature verification according to the Elliptic Curve Digital Signature Algorithm (ECDSA) based on the NIST B-233 standard. A novel OpenRISC-ISA (instruction-set architecture) core featuring a high IPC rate and balanced pipeline stages has been developed to act as the main controlling unit of the accelerator. The redesigned OpenRISC core processes 67% more instructions per second than the reference architecture and ties with a micro-controllable ECC datapath through a highly optimized interface. An ECDSA signature is verified in 11 ms, which is equal to a speedup of 15× and 3.3× with respect to a portable C implementation on the OpenRISC and an assembler-optimized implementation on an ARM7, respectively. Moreover, thanks to a tightly coupled data memory, the proposed co-processor does not block the OpenRISC during its ECC-specific operations, thereby enabling it to also support concurrent execution of other workloads and/or software-based cryptographic extension functions.
SIR10US: A tightly coupled elliptic-curve cryptography co-processor for the OpenRISC / Gautschi, Michael; Muehlberghuber, Michael; Traber, Andreas; Stucki, Sven; Baer, Matthias; Andri, Renzo; Benini, Luca; Muheim, Beat; Kaeslin, Hubert. - STAMPA. - (2014), pp. 6868626.25-6868626.29. (Intervento presentato al convegno 25th IEEE International Conference on Application-Specific Systems, Architectures and Processors, ASAP 2014 tenutosi a Zurich, che nel 2014) [10.1109/ASAP.2014.6868626].
SIR10US: A tightly coupled elliptic-curve cryptography co-processor for the OpenRISC
BENINI, LUCA;
2014
Abstract
Today's embedded systems require resource-aware acceleration engines, which support advanced cryptographic algorithms such as elliptic-curve cryptography (ECC). The authors present an application-specific co-processor for digital signature verification according to the Elliptic Curve Digital Signature Algorithm (ECDSA) based on the NIST B-233 standard. A novel OpenRISC-ISA (instruction-set architecture) core featuring a high IPC rate and balanced pipeline stages has been developed to act as the main controlling unit of the accelerator. The redesigned OpenRISC core processes 67% more instructions per second than the reference architecture and ties with a micro-controllable ECC datapath through a highly optimized interface. An ECDSA signature is verified in 11 ms, which is equal to a speedup of 15× and 3.3× with respect to a portable C implementation on the OpenRISC and an assembler-optimized implementation on an ARM7, respectively. Moreover, thanks to a tightly coupled data memory, the proposed co-processor does not block the OpenRISC during its ECC-specific operations, thereby enabling it to also support concurrent execution of other workloads and/or software-based cryptographic extension functions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
