Chair of Dependable Nano Computing (CDNC)
Dennis Gnad

Dr.-Ing. Dennis R. E. Gnad

Short Bio

Dennis Rolf Engelbert Gnad received his B.Eng. degree in Computer Engineering from Hochschule Pforzheim University, Germany in 2011, where he did his Bachelor Thesis in Cooperation with Texas Instruments Germany. In 2015, he received his M.Sc. in Computer Science from Karlsruhe Institute of Technology (KIT), Germany. In his Master Thesis he worked with the ITEC/CES group of Prof. Henkel with Dr. Shafique. In 2015, he became a PhD student at the ITEC/CDNC group of Prof. Mehdi Tahoori and later received his PhD degree (Dr.-Ing.) in 2020 with distinction (summa cum laude), and the dissertation "Remote Attacks on FPGA Hardware". His current research interests are in hardware security, primarily focussed on FPGA-based systems.

 

Advised or Supervised Past and Current Students:

  • Jonas Krautter: Master Thesis: "On-Chip Fault Attack Analysis using shared FPGA resources"; SHK Side-Channels
  • Hashim Syed Gillani: SHK FPGA Voltage Drop Sensor Calibration
  • Luis Piepka: SHK FPGA Test Automation and Soft-Core Experiments
  • Yiwei Hao: SHK FPGA Tests and Measurement
  • Sascha Rapp: Bachelor Thesis: "Detecting malicious combinational cycles in FPGA bitstreams"
  • Cong Dang Khoa Nguyen: Bachelor Thesis: "Voltage-based Covert Channel Communication between logically separated IP Cores in FPGAs"
  • Xiang Chen: SHK Microcontroller programming and security
  • Uzair Abbas: SHK FPGA Sensors / Reconfiguration / Security
  • Rami Aqqad: SHK FPGA Sensors / Reconfiguration / Security
  • Haseeb Nawaz: SHK FPGA Sensors
  • Grégoire Barbon: Internship FPGA Security
  • Antoine Heraud: Internship FPGA and Circuit-Level Security
  • Moritz Hauer: SHK FPGA Security
  • Sergej Meschkov: Master Thesis in the subject area of FPGA and Circuit-Level Security
  • Vincent Meyers: SHK FPGA Security
  • Nguyen Minh Dang: SHK FPGA Security

 

Publications:

17. J. Krautter, D. R. E. Gnad, M. B. Tahoori, "Remote and Stealthy Fault Attacks on Virtualized FPGAs", in Proceedings of Design, Automation & Test in Europe (DATE), 2021. (Invited Paper)

16. D. R. E. Gnad, V. Meyers, N. M. Dang, F. Schellenberg, A. Moradi, M. B. Tahoori, "Stealthy Logic Misuse for Power Analysis Attacks in Multi-Tenant FPGAs", in Proceedings of Design, Automation & Test in Europe (DATE), 2021.

15. D. R. E. Gnad, "Remote Attacks on FPGA Hardware", Karlsruher Institut für Technologie (KIT), 2020. [10.5445/IR/1000123237]

14. J. Krautter, D. Gnad, M. Tahoori, "CPAmap: On the Complexity of Secure FPGA Virtualization, Multi-Tenancy, and Physical Design", in IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2020.

13. D. R. E. Gnad, F. Schellenberg, J. Krautter, A. Moradi and M. B. Tahoori, "Remote Electrical-level Security Threats to Multi-Tenant FPGAs," in IEEE Design & Test, 2020.

12. J. Krautter, D. R. E. Gnad, F. Schellenberg, A. Moradi, and M. B. Tahoori, "Active Fences against Voltage-based Side Channels in Multi-Tenant FPGAs", in Proceedings of the International Conference on Computer-Aided Design (ICCAD), 2019, USA.

11. J. Krautter, D. R. E. Gnad, M. B. Tahoori, "Mitigating Electrical-Level Attacks towards Secure Multi-Tenant FPGAs in the Cloud", in ACM Transactions on Reconfigurable Technology and Systems (TRETS), 2019.

10. D. R. E. Gnad, J. Krautter, M. B. Tahoori, "Leaky Noise: New Side-Channel Attack Vectors in Mixed-Signal IoT Devices", in IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2019.

9. D. R. E. Gnad, S. Rapp, J. Krautter, M. B. Tahoori, "Checking for Electrical Level Security Threats in Bitstreams for Multi-Tenant FPGAs", International Conference on Field-Programmable Technology (FPT), 2018, Japan.

8. F. Schellenberg, D. R. E. Gnad, A. Moradi, M. B. Tahoori, "Remote Inter-Chip Power Analysis Side-Channel Attacks at Board-Level", In Proceedings of IEEE/ACM International Conference on Computer-Aided Design (ICCAD), 2018, USA.

7. J. Krautter, D. R. E. Gnad, M. B. Tahoori, "FPGAhammer: Remote Voltage Fault Attacks on Shared FPGAs, suitable for DFA on AES", in IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2018. (CSAW'18 Finalist, Top Picks in Hardware Security 2020)

6. D. R. E. Gnad, F. Oboril, S. Kiamehr, M. B. Tahoori, "An Experimental Evaluation and Analysis of Transient Voltage Fluctuations in FPGAs", in IEEE Transactions on Very Large Scale Integration Systems (TVLSI), 2018.

5. F. Schellenberg, D. R. E. Gnad, A. Moradi, M. B. Tahoori, "An Inside Job: Remote Power Analysis Attacks on FPGAs", in proceedings of Design, Automation & Test in Europe (DATE), 2018, Germany. (Best Paper Candidate, Top Picks in Hardware Security 2019)

4. D. R. E. Gnad, F. Oboril, M. B. Tahoori, "Voltage Drop-based Fault Attacks on FPGAs using Valid Bitstreams", International Conference on Field-Programmable Logic and Applications (FPL), 2017, Belgium. (Best Paper Award, *Stamatis Vassiliadis Award)

3. D. R. E. Gnad, F. Oboril, S. Kiamehr, M. B. Tahoori, "Analysis of Transient Voltage Fluctuations in FPGAs", International Conference on Field-Programmable Technology (FPT), 2016, China. (Best Paper Candidate)

2. D. Gnad, M. Shafique, F. Kriebel, S. Rehman, D. Sun, J. Henkel, "Hayat: Harnessing Dark Silicon and Variability for Aging Deceleration and Balancing", in Proceedings of Design Automation Conference (DAC), USA, 2015.

1. M. Shafique, D. Gnad, S. Garg, J. Henkel, "Variability-Aware Dark Silicon Management in On-Chip Many-Core Systems", in Proceedings of Design, Automation & Test in Europe (DATE), France, 2015.

 

Media / Talks / Demos:

D. Gnad, S. Ritterbusch, "FPGA Seitenkanäle", Gespräch im Modellansatz Podcast, Folge 177, Fakultät für Mathematik, Karlsruher Institut für Technologie (KIT), 2018. <http://modellansatz.de/fpga-seitenkanaele>

D. Gnad, "Seitenkanal-Angriffe innerhalb FPGA-Chips", Vortrag auf der GPN18, media.ccc.de, Chaos Computer Club e.V, May 2018, Karlsruhe, Germany. <https://media.ccc.de/v/gpn18-132-seitenkanal-angriffe-innerhalb-fpga-chips>

D. Gnad, M. Tahoori, "Security threats in nanoscale FPGA fabric", Workshop on SecURity, REliAbiLity, test, prIvacy, Safety and Trust of Future Devices (SURREALIST), May/June 2018, Bremen, Germany.

J. Krautter, D. R. E. Gnad, F. Schellenberg, A. Moradi, M. B. Tahoori, "Software-based Fault and Power Side-Channel Attacks inside Multi-Tenant FPGAs", Demo Session, IEEE International Symposium on Hardware Oriented Security and Trust (HOST), 2019, USA. (BEST Hardware Demo Award, Third Place)

F. Schellenberg, D. R. E. Gnad, A. Moradi, M. B. Tahoori, "An Inside Job: Remote Power Analysis Attacks on FPGAs", Presentation in the "Top Picks in Hardware Security" Workshop (co-located with ICCAD'19) on this DATE'18 paper.

 

Academic Services

  • Reviewed for:

    • Design, Automation & Test in Europe (DATE)

    • IEEE Design & Test

    • IEEE Transactions on Computers (TC)

    • IEEE Transactions on Emerging Topics in Computing (TETC)

    • ACM Transactions on Reconfigurable Technology and Systems (TRETS)

  • Local Arrangements Chair for European Test Symposium (ETS) 2019, Baden-Baden, Germany.