Christopher Portmann

According to our database, Christopher Portmann authored at least 22 papers between 2008 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2025

Simpler and Stronger Models for Deniable Authentication.

Guilherme Rito, Christopher Portmann, Chen-Da Liu-Zhang

IACR Cryptol. ePrint Arch., 2025

2024

Stateful Communication with Malicious Parties.

Chen-Da Liu-Zhang, Christopher Portmann, Guilherme Rito

IACR Cryptol. ePrint Arch., 2024

2022

Multi-Designated Receiver Signed Public Key Encryption.

Ueli Maurer, Christopher Portmann, Guilherme Rito

Proceedings of the Advances in Cryptology - EUROCRYPT 2022 - 41st Annual International Conference on the Theory and Applications of Cryptographic Techniques, Trondheim, Norway, May 30, 2022

2021

Security in Quantum Cryptography.

Christopher Portmann, Renato Renner

CoRR, 2021

Revisiting (R)CCA Security and Replay Protection.

Christian Badertscher, Ueli Maurer, Christopher Portmann, Guilherme Rito

Proceedings of the Public-Key Cryptography - PKC 2021, 2021

Giving an Adversary Guarantees (Or: How to Model Designated Verifier Signatures in a Composable Framework).

Ueli Maurer, Christopher Portmann, Guilherme Rito

Proceedings of the Advances in Cryptology - ASIACRYPT 2021, 2021

2020

Unifying Generic Group Models.

Ueli Maurer, Christopher Portmann, Jiamin Zhu

IACR Cryptol. ePrint Arch., 2020

2019

Composable and Finite Computational Security of Quantum Message Transmission.

Fabio Banfi, Ueli Maurer, Christopher Portmann, Jiamin Zhu

Proceedings of the Theory of Cryptography - 17th International Conference, 2019

2018

Toward an algebraic theory of systems.

Christian Matt, Ueli Maurer, Christopher Portmann, Renato Renner, Björn Tackmann

Theor. Comput. Sci., 2018

2017

Causal Boxes: Quantum Information-Processing Systems Closed Under Composition.

Christopher Portmann, Christian Matt, Ueli Maurer, Renato Renner, Björn Tackmann

IEEE Trans. Inf. Theory, 2017

Composable security in relativistic quantum cryptography.

V. Vilasini, Christopher Portmann, Lídia del Rio

CoRR, 2017

(Quantum) Min-Entropy Resources.

Christopher Portmann

CoRR, 2017

Quantum Authentication with Key Recycling.

Christopher Portmann

Proceedings of the Advances in Cryptology - EUROCRYPT 2017 - 36th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Paris, France, April 30, 2017

2016

Quantum-Proof Multi-Source Randomness Extractors in the Markov Model.

Rotem Arnon Friedman, Christopher Portmann, Volkher B. Scholz

Proceedings of the 11th Conference on the Theory of Quantum Computation, 2016

2014

Cryptographic security of quantum key distribution.

Christopher Portmann, Renato Renner

CoRR, 2014

Composable Security of Delegated Quantum Computation.

Vedran Dunjko, Joseph F. Fitzsimons, Christopher Portmann, Renato Renner

Proceedings of the Advances in Cryptology - ASIACRYPT 2014, 2014

2012

Trevisan's Extractor in the Presence of Quantum Side Information.

Anindya De, Christopher Portmann, Thomas Vidick, Renato Renner

SIAM J. Comput., 2012

Key recycling in authentication.

Christopher Portmann

IACR Cryptol. ePrint Arch., 2012

A modular framework for randomness extraction based on Trevisan's construction

Wolfgang Mauerer, Christopher Portmann, Volkher B. Scholz

CoRR, 2012

2011

Information-Theoretic Secrecy with Access to Decryption Oracles.

Christopher Portmann, Keisuke Tanaka

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011

Characterization of the Relations between Information-Theoretic Non-malleability, Secrecy, and Authenticity.

Akinori Kawachi, Christopher Portmann, Keisuke Tanaka

Proceedings of the Information Theoretic Security - 5th International Conference, 2011

2008

On the Power of Quantum Encryption Keys.

Akinori Kawachi, Christopher Portmann

Proceedings of the Post-Quantum Cryptography, Second International Workshop, 2008