Berger, R.; Dörre, F.; Koch, A.
Two-Party Decision Tree Training from Updatable Order-Revealing Encryption
2024. Applied Cryptography and Network Security : 22nd International Conference, ACNS 2024, Abu Dhabi, United Arab Emirates, March 5-8, 2024, Proceedings. Part I. Ed.: C. Pöpper, 288–317, Springer International Publishing. doi:10.1007/978-3-031-54770-6_12

Ernst, J.; Koch, A.
Private Stream Aggregation with Labels in the Standard Model
2021. Proceedings on Privacy Enhancing Technologies, 2021 (4), 117–138. doi:10.2478/popets-2021-0063

Broadnax, B.; Koch, A.; Mechler, J.; Müller, T.; Müller-Quade, J.; Nagel, M.
Fortified Multi-Party Computation: Taking Advantage of Simple Secure Hardware Modules
2021. Proceedings on privacy enhancing technologies, 2021 (4), 312–338. doi:10.2478/popets-2021-0072

Koch, A.; Schrempp, M.; Kirsten, M.
Card-Based Cryptography Meets Formal Verification
2021. New generation computing, 39, 115–158. doi:10.1007/s00354-020-00120-0

Beskorovajnov, W.; Dörre, F.; Hartung, G.; Koch, A.; Müller-Quade, J.; Strufe, T.
ConTra Corona: Contact Tracing against the Coronavirus by Bridging the Centralized–Decentralized Divide for Stronger Privacy
2021. Advances in Cryptology – ASIACRYPT 2021: 27th International Conference on the Theory and Application of Cryptology and Information Security, Singapore, December 6–10, 2021, Proceedings, Part II. Ed.: M. Tibouchi, 665–695, Springer-Verlag. doi:10.1007/978-3-030-92075-3_23

Faller, S. H.; Baumer, P.; Klooß, M.; Koch, A.; Ottenhues, A.; Raiber, M.
Black-Box Accumulation Based on Lattices
2021. Cryptography and Coding : 18th IMA International Conference, IMACC 2021, Virtual Event, December 14–15, 2021, Proceedings. Ed.: M. B. Paterson, 220–246, Springer. doi:10.1007/978-3-030-92641-0_11

Beskorovajnov, W.; Dörre, F.; Hartung, G.; Koch, A.; Müller-Quade, J.; Strufe, T.
ConTra Corona : Contact Tracing against the Coronavirus by Bridging the Centralized–Decentralized Divide for Stronger Privacy
2021. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000139714

Koch, A.; Walzer, S.
Foundations for actively secure card-based cryptography
2020. 10th International Conference on Fun with Algorithms (FUN 2021). Ed.: M. Farach-Colton, Art.-Nr.: 17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (LZI). doi:10.4230/LIPIcs.FUN.2021.17

Achenbach, D.; Gröll, R.; Hackenjos, T.; Koch, A.; Löwe, B.; Mechler, J.; Müller-Quade, J.; Rill, J.
Your Money or Your Life—Modeling and Analyzing the Security of Electronic Payment in the UC Framework
2019. Financial Cryptography and Data Security – 23rd International Conference, FC 2019, Frigate Bay, St. Kitts and Nevis, February 18–22, 2019, Revised Selected Papers. Ed.: I. Goldberg, 243–261, Springer International Publishing. doi:10.1007/978-3-030-32101-7_16

Koch, A.
Cryptographic Protocols from Physical Assumptions. Dissertation
2019. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000097756

Koch, A.; Schrempp, M.; Kirsten, M.
Card-Based Cryptography Meets Formal Verification
2019. Advances in Cryptology – ASIACRYPT 2019 : 25th International Conference on the Theory and Application of Cryptology and Information Security, Kobe, Japan, December 8–12, 2019, Proceedings. Part I. Ed.: S.D. Galbraith, 488–517, Springer. doi:10.1007/978-3-030-34578-5_18

Koch, A.; Schrempp, M.; Kirsten, M.
Card-Based Cryptography Meets Formal Verification
2019. doi:10.5445/IR/1000120005

Kastner, J.; Koch, A.; Walzer, S.; Miyahara, D.; Hayashi, Y.- ichi; Mizuki, T.; Sone, H.
The Minimum Number of Cards in Practical Card-Based Protocols
2017. Advances in Cryptology - ASIACRYPT 2017 : Proceedings of the 23rd International Conference on the Theory and Applications of Cryptology and Information Security, Part III, Hong Kong, China, 3rd - 7th December 2017. Ed.: T. Takagi, 126–155, Springer. doi:10.1007/978-3-319-70700-6_5

Hartung, G.; Kaidel, B.; Koch, A.; Koch, J.; Hartmann, D.
Practical and Robust Secure Logging from Fault-Tolerant Sequential Aggregate Signatures
2017. Provable Security, 11th International Conference, ProvSec 2017, Proceedings, Xi’an, China, 23rd - 25th October 2017. Ed.: T. Okamoto, 87–106, Springer. doi:10.1007/978-3-319-68637-0_6

Hartung, G.; Kaidel, B.; Koch, A.; Koch, J.; Rupp, A.
Fault-Tolerant Aggregate Signatures
2016. 19th IACR International Conference on Practice and Theory in Public-Key Cryptography, PKC 2016; Taipei; Taiwan; 6 March 2016 through 9 March 2016. Ed.: C.-M. Cheng, 331–356, Springer-Verlag. doi:10.1007/978-3-662-49384-7_13

Alexander Koch; Stefan Walzer; Kevin Härtel
Card-Based Cryptographic Protocols Using a Minimal Number of Cards
2015. Advances in Cryptology - ASIACRYPT 2015 : 21st International Conference on the Theory and Application of Cryptology and Information Security, Proceedings Part I, Auckland, New Zealand, 29th November - 3rd December 2015. Ed.: T. Iwata, 783–807, Springer-Verlag. doi:10.1007/978-3-662-48797-6_32