Jonas Janneck
Jonas Janneck

Postdoc

University of Waterloo

About Me

I am a postdoctoral researcher at the University of Waterloo under the supervision of Douglas Stebila. My research focuses on provable security with a special interest in post-quantum constructions and real-world applications. In particular, I worked on the design and analysis of signature schemes and authenticated key encapsualtion mechanisms.

Previously, I received my PhD from Ruhr University Bochum being supervised by Eike Kiltz and Peter Schwabe. In the fall of 2024, I visited the University of Washington to work with Stefano Tessaro.

Interests
  • Provable Security
  • Post-Quantum Cryptography
  • Real-World Cryptography
Education

  • PhD Cryptography, 2026

    Ruhr University Bochum

  • MSc Business Mathematics, 2022

    University of Mannheim

  • BSc Business Mathematics, 2018

    University of Mannheim

Recent Publications
Jonas Janneck (2026). Bird of Prey: Practical Signature Combiners Preserving Strong Unforgeability. EUROCRYPT 2026.
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Jonas Janneck, Doreen Riepel (2026). Secure Cloud Storage: Modularization, Network Adversaries and Adaptive Corruptions. EUROCRYPT 2026.
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Pierre-Alain Fouque, Phillip Gajland, Hubert De Groote, Jonas Janneck, Eike Kiltz (2026). A Closer Look at Falcon. EUROCRYPT 2026.
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Phillip Gajland, Vincent Hwang, Jonas Janneck (2026). Shadowfax: Hybrid Security and Deniability for AKEMs. USENIX 2026.
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Jonas Janneck, Aysan Nishaburi, Guilherme Rito (2025). Modeling Emails: On the Deniability of BCCs. Cryptology ePrint Archive.
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Jonas Janneck, Jonas Meers, Massimo Ostuzzi, Doreen Riepel (2025). Snake Mackerel: An Isogeny-Based AKEM Leveraging Randomness Reuse. Cryptology ePrint Archive.
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Phillip Gajland, Jonas Janneck, Eike Kiltz (2024). Ring Signatures for Deniable AKEM: Gandalf's Fellowship. CRYPTO 2024.
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Joël Alwen, Jonas Janneck, Eike Kiltz, Benjamin Lipp (2023). The Pre-Shared Key Modes of HPKE. ASIACRYPT 2023.
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Anselme Tueno, Jonas Janneck, David Boehm (2023). A method for securely comparing integers using binary trees. PoPETS 2023.
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Andreas Fischer, Benny Fuhry, Jörn Kußmaul, Jonas Janneck, Florian Kerschbaum, Eric Bodden (2022). Computation on encrypted data using dataflow authentication. ACM Transactions on Privacy and Security 2022.
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Andreas Fischer, Jonas Janneck, Jörn Kussmaul, Nicolas Krätzschmar, Florian Kerschbaum, Eric Bodden (2020). PASAPTO: Policy-aware Security and Performance Trade-off Analysis--Computation on Encrypted Data with Restricted Leakage. CSF 2020.
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Recent Talks

Bird of Prey

 Eurocrypt (2026), Rome, Italy

Secure Cloud Storage

 Eurocrypt (2026), Rome, Italy

A Closer Look at Falcon

 Eurocrypt (2026), Rome, Italy
 Lattice Seminar Royal Holloway (2026), Egham, UK
 Aarhus Crypto Group (2025), Aarhus, Denmark
 TU Darmstadt (2025), Darmstadt, Germany
 University of Mannheim (2025), Mannheim, Germany
 UC San Diego (2024), San Diego, CA, USA
 Microsoft Research (2024), Redmond, WA, USA

The Pre-Shared Key Modes of HPKE

 Asiacrypt (2023), Guangzhou, China

Private Set Intersection based on Fully Homomorphic Encryption

 Cybersecurity Conference (2022), Mannheim, Germany

Secure Branching Program Evaluation

 GI Crypto Day (2021), Virtual

Service

Reviewing

  • ACNS 2025
  • Crypto 2023
  • Eurocrypt 2024, 2025, 2026
  • PKC 2025
  • S&P 2026
  • TCC 2023

Contact
Signal: Jonas.5026
📧 FirstLetterOfFirstNameFollowedByLastname@uwaterloo.ca
🏢 Building MC, Room 6002, 200 University Ave W, Waterloo