Joël Alwen

According to our database, Joël Alwen authored at least 42 papers between 2005 and 2023.

Collaborative distances:

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

2023

Fork-Resilient Continuous Group Key Agreement.

Joël Alwen, Marta Mularczyk, Yiannis Tselekounis

IACR Cryptol. ePrint Arch., 2023

The Pre-Shared Key Modes of HPKE.

Joël Alwen, Jonas Janneck, Eike Kiltz, Benjamin Lipp

IACR Cryptol. ePrint Arch., 2023

2022

Post-Quantum Multi-Recipient Public Key Encryption.

Joël Alwen, Dominik Hartmann, Eike Kiltz, Marta Mularczyk, Peter Schwabe

IACR Cryptol. ePrint Arch., 2022

CoCoA: Concurrent Continuous Group Key Agreement.

Joël Alwen, Benedikt Auerbach, Miguel Cueto Noval, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak, Michael Walter

IACR Cryptol. ePrint Arch., 2022

Coffee: Fast Healing Concurrent Continuous Group Key Agreement for Decentralized Group Messaging.

Joël Alwen, Benedikt Auerbach, Miguel Cueto Noval, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak

IACR Cryptol. ePrint Arch., 2022

2021

Server-Aided Continuous Group Key Agreement.

Joël Alwen, Dominik Hartmann, Eike Kiltz, Marta Mularczyk

IACR Cryptol. ePrint Arch., 2021

Modular Design of Secure Group Messaging Protocols and the Security of MLS.

Joël Alwen, Sandro Coretti, Yevgeniy Dodis, Yiannis Tselekounis

IACR Cryptol. ePrint Arch., 2021

Grafting Key Trees: Efficient Key Management for Overlapping Groups.

Joël Alwen, Benedikt Auerbach, Mirza Ahad Baig, Miguel Cueto, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak, Michael Walter

IACR Cryptol. ePrint Arch., 2021

Keep the Dirt: Tainted TreeKEM, Adaptively and Actively Secure Continuous Group Key Agreement.

Karen Klein, Guillermo Pascual-Perez, Michael Walter, Chethan Kamath, Margarita Capretto, Miguel Cueto, Ilia Markov, Michelle Yeo, Joël Alwen, Krzysztof Pietrzak

Proceedings of the 42nd IEEE Symposium on Security and Privacy, 2021

2020

On The Insider Security of MLS.

Joël Alwen, Daniel Jost, Marta Mularczyk

IACR Cryptol. ePrint Arch., 2020

Continuous Group Key Agreement with Active Security.

Joël Alwen, Sandro Coretti, Daniel Jost, Marta Mularczyk

IACR Cryptol. ePrint Arch., 2020

Analysing the HPKE Standard.

Joël Alwen, Bruno Blanchet, Eduard Hauck, Eike Kiltz, Benjamin Lipp, Doreen Riepel

IACR Cryptol. ePrint Arch., 2020

2019

Security Analysis and Improvements for the IETF MLS Standard for Group Messaging.

Joël Alwen, Sandro Coretti, Yevgeniy Dodis, Yiannis Tselekounis

IACR Cryptol. ePrint Arch., 2019

Keep the Dirt: Tainted TreeKEM, an Efficient and Provably Secure Continuous Group Key Agreement Protocol.

Joël Alwen, Margarita Capretto, Miguel Cueto, Chethan Kamath, Karen Klein, Guillermo Pascual-Perez, Krzysztof Pietrzak, Michael Walter

IACR Cryptol. ePrint Arch., 2019

2018

The Double Ratchet: Security Notions, Proofs, and Modularization for the Signal Protocol.

Joël Alwen, Sandro Coretti, Yevgeniy Dodis

IACR Cryptol. ePrint Arch., 2018

Sustained Space Complexity.

Joël Alwen, Jeremiah Blocki, Krzysztof Pietrzak

IACR Cryptol. ePrint Arch., 2018

2017

Moderately Hard Functions: Definition, Instantiations, and Applications.

Joël Alwen, Björn Tackmann

IACR Cryptol. ePrint Arch., 2017

Practical Graphs for Optimal Side-Channel Resistant Memory-Hard Functions.

Joël Alwen, Jeremiah Blocki, Benjamin Harsha

IACR Cryptol. ePrint Arch., 2017

Beyond Hellman's Time-Memory Trade-Offs with Applications to Proofs of Space.

Hamza Abusalah, Joël Alwen, Bram Cohen, Danylo Khilko, Krzysztof Pietrzak, Leonid Reyzin

IACR Cryptol. ePrint Arch., 2017

Cumulative Space in Black-White Pebbling and Resolution.

Joël Alwen, Susanna F. de Rezende, Jakob Nordström, Marc Vinyals

Proceedings of the 8th Innovations in Theoretical Computer Science Conference, 2017

2016

On the Memory-Hardness of Data-Independent Password-Hashing Functions.

Joël Alwen, Peter Gazi, Chethan Kamath, Karen Klein, Georg Osang, Krzysztof Pietrzak, Leonid Reyzin, Michal Rolínek, Michal Rybár

IACR Cryptol. ePrint Arch., 2016

Scrypt is Maximally Memory-Hard.

Joël Alwen, Binyi Chen, Krzysztof Pietrzak, Leonid Reyzin, Stefano Tessaro

IACR Cryptol. ePrint Arch., 2016

On the Complexity of Scrypt and Proofs of Space in the Parallel Random Oracle Model.

Joël Alwen, Binyi Chen, Chethan Kamath, Vladimir Kolmogorov, Krzysztof Pietrzak, Stefano Tessaro

IACR Cryptol. ePrint Arch., 2016

Depth-Robust Graphs and Their Cumulative Memory Complexity.

Joël Alwen, Jeremiah Blocki, Krzysztof Pietrzak

IACR Cryptol. ePrint Arch., 2016

Towards Practical Attacks on Argon2i and Balloon Hashing.

Joël Alwen, Jeremiah Blocki

IACR Cryptol. ePrint Arch., 2016

Efficiently Computing Data-Independent Memory-Hard Functions.

Joël Alwen, Jeremiah Blocki

IACR Cryptol. ePrint Arch., 2016

2015

Spacemint: A Cryptocurrency Based on Proofs of Space.

Sunoo Park, Krzysztof Pietrzak, Albert Kwon, Joël Alwen, Georg Fuchsbauer, Peter Gazi

IACR Cryptol. ePrint Arch., 2015

Incoercible Multi-party Computation and Universally Composable Receipt-Free Voting.

Joël Alwen, Rafail Ostrovsky, Hong-Sheng Zhou, Vassilis Zikas

Proceedings of the Advances in Cryptology - CRYPTO 2015, 2015

2014

High Parallel Complexity Graphs and Memory-Hard Functions.

Joël Alwen, Vladimir Serbinenko

IACR Cryptol. ePrint Arch., 2014

Key-Indistinguishable Message Authentication Codes.

Joël Alwen, Martin Hirt, Ueli Maurer, Arpita Patra, Pavel Raykov

IACR Cryptol. ePrint Arch., 2014

Anonymous Authentication with Shared Secrets.

Joël Alwen, Martin Hirt, Ueli Maurer, Arpita Patra, Pavel Raykov

IACR Cryptol. ePrint Arch., 2014

2013

Learning with Rounding, Revisited: New Reduction, Properties and Applications.

Joël Alwen, Stephan Krenn, Krzysztof Pietrzak, Daniel Wichs

IACR Cryptol. ePrint Arch., 2013

On the Relationship between Functional Encryption, Obfuscation, and Fully Homomorphic Encryption.

Joël Alwen, Manuel Barbosa, Pooya Farshim, Rosario Gennaro, S. Dov Gordon, Stefano Tessaro, David A. Wilson

Proceedings of the Cryptography and Coding - 14th IMA International Conference, 2013

2011

Collusion Preserving Computation.

Joël Alwen

PhD thesis, 2011

Generating Shorter Bases for Hard Random Lattices.

Joël Alwen, Chris Peikert

Theory Comput. Syst., 2011

Collusion-Preserving Computation.

Joël Alwen, Jonathan Katz, Ueli Maurer, Vassilis Zikas

IACR Cryptol. ePrint Arch., 2011

2009

Leakage-Resilient Public-Key Cryptography in the Bounded-Retrieval Model.

Joël Alwen, Yevgeniy Dodis, Daniel Wichs

IACR Cryptol. ePrint Arch., 2009

Public-Key Encryption in the Bounded-Retrieval Model.

Joël Alwen, Yevgeniy Dodis, Moni Naor, Gil Segev, Shabsi Walfish, Daniel Wichs

IACR Cryptol. ePrint Arch., 2009

Survey: Leakage Resilience and the Bounded Retrieval Model.

Joël Alwen, Yevgeniy Dodis, Daniel Wichs

Proceedings of the Information Theoretic Security, 4th International Conference, 2009

Collusion-Free Multiparty Computation in the Mediated Model.

Joël Alwen, Jonathan Katz, Yehuda Lindell, Giuseppe Persiano, Abhi Shelat, Ivan Visconti

Proceedings of the Advances in Cryptology, 2009

2008

Collusion-Free Protocols in the Mediated Model.

Joël Alwen, Abhi Shelat, Ivan Visconti

Proceedings of the Advances in Cryptology, 2008

2005

Impossibility and Feasibility Results for Zero Knowledge with Public Keys.

Joël Alwen, Giuseppe Persiano, Ivan Visconti

Proceedings of the Advances in Cryptology, 2005