TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Skuballa, Matthias
A1  - Walz, Andreas
A1  - Bühler, Heiko
A1  - Sikora, Axel
T1  - Cryptographic Protection of Cyclic Real-Time Communication in Ethernet-Based Fieldbuses: How Much Hardware is Required?
T2  - IEEE Conference on Emerging Technologies & Factory Automation (ETFA)
N2  - It seems to be a widespread impression that the use of strong cryptography inevitably imposes a prohibitive burden on industrial communication systems, at least inasmuch as real-time requirements in cyclic fieldbus communications are concerned. AES-GCM is a leading cryptographic algorithm for authenticated encryption, which protects data against disclosure and manipulations. We study the use of both hardware and software-based implementations of AES-GCM. By simulations as well as measurements on an FPGA-based prototype setup we gain and substantiate an important insight: for devices with a 100 Mbps full-duplex link, a single low-footprint AES-GCM hardware engine can deterministically cope with the worst-case computational load, i.e., even if the device maintains a maximum number of cyclic communication relations with individual cryptographic keys. Our results show that hardware support for AES-GCM in industrial fieldbus components may actually be very lightweight.
Y1  - 2021
SN  - 978-1-7281-2989-1 (elektronisch)
SS  - 978-1-7281-2989-1 (elektronisch)
SN  - 978-1-7281-2990-7 (Print on Demand)
SS  - 978-1-7281-2990-7 (Print on Demand)
U6  - https://doi.org/10.1109/ETFA45728.2021.9613244
DO  - https://doi.org/10.1109/ETFA45728.2021.9613244
SP  - 1
EP  - 7
S1  - 7
PB  - IEEE
ER  -