Project
M.Sc. Holger Mandry
I studied Information System Technology at the University of Ulm where I received my B.Sc. degree in 2015 and my M.Sc. in Mai 2018. During the Master I focused on Physical Unclonable Functions (PUFs) and wrote my thesis "Entwurf und Implementierung einer vollständig modularisierten PUF-Codierungskette auf einem SoC" at the Institute of Microelectronics.
Since August 2018 I am working as research assistant towards the Ph.D. degree under the supervision of Prof. Dr.-Ing Maurits Ortmanns. In my research I focus on the improvement of mixed-signal PUF implementations.
Publications
2025
16.
Mayer,
M.;
Reich,
S.;
Mandry,
H.;
Ortmanns,
M.
A Rapid-Prototyping Platform for Active Stents Utilizing Device Decapsulation for Miniaturization
31st IEEE International Conference on Electronics, Circuits and Systems (ICECS)
January 2025
A Rapid-Prototyping Platform for Active Stents Utilizing Device Decapsulation for Miniaturization
31st IEEE International Conference on Electronics, Circuits and Systems (ICECS)
January 2025
| DOI: | 10.1109/ICECS61496.2024.10848908 |
15.
Mandry,
H.;
Driemeyer,
B.;
Becker,
J.;
Ortmanns,
M.
Investigation of the Influence of Multi-Valued Symbol Extraction on PUF Randomness
31st IEEE International Conference on Electronics, Circuits and Systems (ICECS)
January 2025
Investigation of the Influence of Multi-Valued Symbol Extraction on PUF Randomness
31st IEEE International Conference on Electronics, Circuits and Systems (ICECS)
January 2025
| DOI: | 10.1109/ICECS61496.2024.10849251 |
2024
14.
Driemeyer,
B.;
Mandry,
H.;
Wiens,
D.-P.;
Becker,
J.;
Ortmanns,
M.
Optimisation of RO-PUF Design Parameters for Minimising the Effective Area per PUF Bit
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore
May 2024
Optimisation of RO-PUF Design Parameters for Minimising the Effective Area per PUF Bit
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore
May 2024
| DOI: | 10.1109/ISCAS58744.2024.10558478 |
2023
13.
Driemeyer,
B.;
Kässer,
P.;
Mandry,
H.;
Wiens,
D.-P.;
Ortmanns,
M.
A Feasibility Study on a Switched-Capacitor Based PUF in 28 nm Technology
30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye
December 2023
A Feasibility Study on a Switched-Capacitor Based PUF in 28 nm Technology
30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye
December 2023
| DOI: | 10.1109/ICECS58634.2023.10382899 |
2022
12.
Sporer,
M.;
Reich,
S.;
Mandry,
H.;
Becker,
J.;
Ortmanns,
M.
A Wireless Headstage Prototype Based on a Neurorecorder IC
IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipei, Taiwan
October 2022
A Wireless Headstage Prototype Based on a Neurorecorder IC
IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipei, Taiwan
October 2022
| DOI: | 10.1109/BioCAS54905.2022.9948554 |
11.
Driemeyer,
B.;
Mandry,
H.;
Wiens,
D.-P.;
Becker,
J.;
Ortmanns,
M.
PUF-Entropy Extraction of DAC Intersymbol-Interference using Continuous-Time Delta-Sigma ADCs
IEEE International Conference on Electronics, Circuits and Systems (ICECS)
October 2022
PUF-Entropy Extraction of DAC Intersymbol-Interference using Continuous-Time Delta-Sigma ADCs
IEEE International Conference on Electronics, Circuits and Systems (ICECS)
October 2022
| DOI: | 10.1109/ICECS202256217.2022.9971072 |
2021
10.
Müelich,
S.;
Mandry,
H.;
Ortmanns,
M.;
Fischer,
R.
A Multilevel Coding Scheme for Multi-Valued Physical Unclonable Functions
IEEE Transactions on Information Forensics and Security
June 2021
A Multilevel Coding Scheme for Multi-Valued Physical Unclonable Functions
IEEE Transactions on Information Forensics and Security
June 2021
| DOI: | 10.1109/TIFS.2021.3089883 |
9.
Mandry,
H.;
Müelich,
S.;
Becker,
J.;
Fischer,
R.;
Ortmanns,
M.
Using Polynomial Interpolation for Reproducing Multi-Valued Responses of Physical Unclonable Functions on FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS)
May 2021
Using Polynomial Interpolation for Reproducing Multi-Valued Responses of Physical Unclonable Functions on FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS)
May 2021
| DOI: | 10.1109/ISCAS51556.2021.9401501 |
2020
8.
Herkle,
A.;
Rossak,
P.;
Mandry,
H.;
Becker,
J.;
Ortmanns,
M.
Comparison of measurement and readout strategies for RO-PUFs on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
Comparison of measurement and readout strategies for RO-PUFs on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
7.
Herkle,
A.;
Mandry,
H.;
Becker,
J.;
Reich,
S.;
Sporer,
M.;
Ortmanns,
M.
Extracting Weak PUFs from Differential Nonlinearity of Digital-to-Analog Converters
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
Extracting Weak PUFs from Differential Nonlinearity of Digital-to-Analog Converters
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
6.
Herkle,
A.;
Mandry,
H.;
Becker,
J.;
Ortmanns,
M.
Live Demonstration: Generating FPGA Fingerprints utilizing Full-Chip Characterization with Ring-Oscillator PUFs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
Live Demonstration: Generating FPGA Fingerprints utilizing Full-Chip Characterization with Ring-Oscillator PUFs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
October 2020
5.
Mandry,
H.;
Herkle,
A.;
Müelich,
S.;
Becker,
J.;
Fischer,
R.;
Ortmanns,
M.
Normalization and Multi-Valued Symbol Extraction from RO-PUFs for Enhanced Uniform Probability Distributions
IEEE Transactions on Circuits and Systems--II: Express Briefs
March 2020
Normalization and Multi-Valued Symbol Extraction from RO-PUFs for Enhanced Uniform Probability Distributions
IEEE Transactions on Circuits and Systems--II: Express Briefs
March 2020
| DOI: | 10.1109/TCSII.2020.2980748 |
2019
4.
Rajabzadeh,
M.;
Ungethüm,
J.;
Mandry,
H.;
Schilpp,
C.;
Wittekindt,
O.;
Ortmanns,
M.
An Evaluation Study of Various Excitation Signals for Electrical Impedance Spectroscopy
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
An Evaluation Study of Various Excitation Signals for Electrical Impedance Spectroscopy
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
3.
Chi,
J.;
Mandry,
H.;
Ortmanns,
M.
Finite Gain-Bandwidth of Q Enhancement in Bandpass CT ΣΔ Modulator and Compensation
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
May 2019
Finite Gain-Bandwidth of Q Enhancement in Bandpass CT ΣΔ Modulator and Compensation
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
May 2019
2.
Herkle,
A.;
Mandry,
H.;
Becker,
J.;
Ortmanns,
M.
In-depth Analysis and Enhancements of RO-PUFs with a Partial Reconfiguration Framework on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Hardware Oriented Security and Trust (HOST), Tysons Corner, USA
May 2019
In-depth Analysis and Enhancements of RO-PUFs with a Partial Reconfiguration Framework on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Hardware Oriented Security and Trust (HOST), Tysons Corner, USA
May 2019
| DOI: | 10.18725/OPARU-14107 |
1.
Mandry,
H.;
Herkle,
A.;
Kürzinger,
L.;
Müelich,
S.;
Becker,
J.;
Fischer,
R.;
Ortmanns,
M.
Modular PUF Coding Chain with High-Speed Reed-Muller Decoder
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
Modular PUF Coding Chain with High-Speed Reed-Muller Decoder
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
Research Assistent
