Publications

I am a supporter of open access. If a paper is missing or a link is broken, then please drop me an e-mail, I am happy to provide copies of papers.

Peer-Reviewed Conference Proceedings and Journals

2023

• Gareth T. Davies, Sebastian Faller, Kai Gellert, Tobias Handirk, Julia Hesse, Máté Horvath, Tibor Jager
  Security Analysis of the WhatsApp End-to-End Encrypted Backup Protocol
  43rd Annual International Cryptology Conference - CRYPTO 2023
• Kai Gellert, Kristian Gjøsteen, Håkon Jacobsen, Tibor Jager
  On Optimal Tightness for Key Exchange with Full Forward Secrecy via Key Confirmation
  43rd Annual International Cryptology Conference - CRYPTO 2023
• Peter Chvojka, Tibor Jager
  Simple, Fast, Efficient, and Tightly-Secure Non-Malleable Non-Interactive Timed Commitments
  26th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2023
• Pascal Bemmann, Sebastian Berndt, Denis Diemert, Tibor Jager, Thomas Eisenbarth
  Subversion-Resilient Authenticated Encryption without Random Oracles
  21st International Conference on Applied Cryptography and Network Security - ACNS 2023

2022

• Hannah E. Davis, Denis Diemert, Felix Günther, Tibor Jager
  On the Concrete Security of TLS 1.3 PSK Mode
  41st Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2022
• Pritha Gupta, Arunselvan Ramaswamy, Jan P. Drees, Eyke Hüllermeier, Claudia Priesterjahn, Tibor Jager
  Automated Information Leakage Detection: Application to Side-Channel Detection in Cryptographic Protocols
  14th International Conference on Agents and Artificial Intelligence - ICAART 2022
• Kai Gellert, Tibor Jager, Lin Lyu, Tom Neuschulten
  On Fingerprinting Attacks and Length-Hiding Encryption
  RSA Conference, Cryptographers’ Track - CT-RSA 2022

2021

• Jan P. Drees, Pritha Gupta, Eyke Hüllermeier, Tibor Jager, Alexander Konze, Claudia Priesterjahn, Arunselvan Ramaswamy, Juraj Somorowsky
  Automated Detection of Side Channels in Cryptographic Protocols: DROWN the ROBOTs
  14th ACM Workshop on Artifical Intelligence and Security - AISec 2021
• Denis Diemert, Kai Gellert, Tibor Jager, Lin Lyu
  Digital Signatures with Memory-Tight Security in the Multi-Challenge Setting
  27th Annual International Conference on the Theory and Applications of Cryptology and Information Security - ASIACRYPT 2021
• Colin Boyd, Gareth T. Davies, Bor de Kock, Kai Gellert, Tibor Jager, Lise Millerjord
  Symmetric Key Exchange with Full Forward Security and Robust Synchronization
  27th Annual International Conference on the Theory and Applications of Cryptology and Information Security - ASIACRYPT 2021
• Peter Chvojka, Tibor Jager, Daniel Slamanig, Christoph Striecks
  Versatile and Sustainable Timed-Release Encryption and Sequential Time-Lock Puzzles
  26th European Symposium on Research in Computer Security - ESORICS 2021
• Shuai Han, Tibor Jager, Eike Kiltz, Shengli Liu, Jiaxin Pan, Doreen Riepel, Sven Schäge
  Authenticated Key Exchange and Signatures with Tight Security in the Standard Model
  41st Annual International Cryptology Conference - CRYPTO 2021
• Pascal Bemmann, Rongmao Chen, Tibor Jager
  Subversion-Resilient Public Key Encryption with Practical Watchdogs
  24th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2021
• Denis Diemert, Kai Gellert, Tibor Jager, Lin Lyu
  More Efficient Digital Signatures with Tight Multi-User Security
  24th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2021
• Tibor Jager, Rafael Kurek, David Niehues
  Efficient Adaptively-Secure IB-KEMs and VRFs via Near-Collision Resistance
  24th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2021
• Nimrod Aviram, Kai Gellert, Tibor Jager
  Session Resumption Protocols and Efficient Forward Security for TLS 1.3 0-RTT
  Journal of Cryptology - Special Issue on TLS 1.3, 2021
• Tibor Jager, Eike Kiltz, Doreen Riepel, Sven Schäge
  Tightly-Secure Authenticated Key Exchange, Revisited
  40th Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2021
• David Derler, Kai Gellert, Tibor Jager, Daniel Slamanig, Christoph Striecks
  Bloom Filter Encryption and Applications to Efficient Forward-Secret 0-RTT Key Exchange
  Journal of Cryptology, 2021
• Denis Diemert, Tibor Jager
  On the Tight Security of TLS 1.3: Theoretically-Sound Cryptographic Parameters for Real-World Deployments
  Journal of Cryptology - Special Issue on TLS 1.3, 2021

2020

• Fynn Dallmeier, Jan P. Drees, Kai Gellert, Tobias Handirk, Tibor Jager, Jonas Klauke, Simon Nachtigall, Timo Renzelmann, Rudi Wolf
  Forward-Secure 0-RTT Goes Live: Implementation and Performance Analysis in QUIC
  19th International Conference on Cryptology and Network Security 2020
• Peter Chvojka, Tibor Jager, Saqib A. Kakvi
  Offline Witness Encryption with Semi-Adaptive Security
  18th International Conference on Applied Cryptography and Network Security

2019

• Moritz Schulze Darup, Tibor Jager
  Encrypted Cloud-based Control using Secret Sharing with One-time Pads
  58th IEEE Conference on Decision and Control - CDC 2019
• Tibor Jager, David Niehues
  On the Real-World Instantiability of Admissible Hash Functions and Efficient Verifiable Random Functions
  Selected Areas in Cryptography - SAC 2019 - 26th International Conference
• Cas Cremers, Katriel Cohn-Gordon, Kristian Gjøsteen, Håkon Jacobsen, Tibor Jager
  Highly Efficient Key Exchange Protocols with Optimal Tightness
  39th International Cryptology Conference - CRYPTO 2019
• Nimrod Aviram, Kai Gellert, Tibor Jager
  Session Resumption Protocols and Efficient Forward Security for TLS 1.3 0-RTT
  38th Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2019
• Nils Fleischhacker, Tibor Jager, Dominique Schröder
  On Tight Security Proofs for Schnorr Signatures
  Journal of Cryptology, 2019, to appear

2018

• Tibor Jager, Saqib A. Kakvi, Alexander May
  On the Security of the PKCS#1 v1.5 Signature Scheme
  25th ACM Conference on Computer and Communications Security - ACM CCS 2018
• Tibor Jager, Rafael Kurek
  Short Digital Signatures and ID-KEMs via Truncation Collision Resistance
  24th Annual International Conference on the Theory and Applications of Cryptology and Information Security - ASIACRYPT 2018
• Tibor Jager, Rafael Kurek, Jiaxin Pan
  Simple and More Efficient PRFs with Tight Security from LWE and Matrix-DDH
  24th Annual International Conference on the Theory and Applications of Cryptology and Information Security - ASIACRYPT 2018
• Kristian Gjøsteen, Tibor Jager
  Practical and Tightly-Secure Digital Signatures and Authenticated Key Exchange
  38th International Cryptology Conference - CRYPTO 2018
• David Derler, Tibor Jager, Daniel Slamanig, Christoph Striecks
  Bloom Filter Encryption and Applications to Efficient Forward-Secret 0-RTT Key Exchange
  37th Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2018

2017

• Tibor Jager, Florian Kohlar, Sven Schäge, Jörg Schwenk
  Authenticated Confidential Channel Establishment and the Security of TLS-DHE, see also
  Journal of Cryptology, 2017
• Tibor Jager, Martijn Stam, Ryan Stanley-Oakes, Bogdan Warinschi
  Multi-Key Authenticated Encryption with Corruptions: Reductions are Lossy
  15th IACR Theory of Cryptography Conference - TCC 2017
• Britta Hale, Tibor Jager, Sebastian Lauer, Jörg Schwenk
  Simple Security Definitions for and Constructions of 0-RTT Key Exchange
  15th International Conference on Applied Cryptography and Network Security - ACNS 2017
• Felix Günther, Britta Hale, Tibor Jager, Sebastian Lauer
  0-RTT Key Exchange with Full Forward Secrecy
  36th Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2017

2016

• Matthias Horst, Martin Grothe, Tibor Jager, and Jörg Schwenk
  Breaking PPTP VPNs via RADIUS Encryption
  15th International Conference on Cryptology and Network Security - CANS 2016
• Dennis Hofheinz, Tibor Jager, Andy Rupp
  Public-Key Encryption with Simulation-Based Selective-Opening Security and Compact Ciphertexts
  14th IACR Theory of Cryptography Conference - TCC 2016-B
• Dennis Hofheinz, Tibor Jager, Dakshita Khurana, Amit Sahai, Brent Waters, Mark Zhandry
  How to Generate and use Universal Samplers
  22nd Annual International Conference on the Theory and Applications of Cryptology and Information Security - ASIACRYPT 2016
• Christoph Bader, Tibor Jager, Yong Li, Sven Schäge
  On the Impossibility of Tight Cryptographic Reductions
  35th Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2016
• Dennis Hofheinz, Tibor Jager
  Verifiable Random Functions from Standard Assumptions
  13th IACR Theory of Cryptography Conference - TCC 2016-A
• Felix Heuer, Tibor Jager, Eike Kiltz, Sven Schäge
  On the Selective Opening Security of Practical Public-Key Encryption Schemes
  Invited to IET Information Security, 2016
• Tibor Jager, Andy Rupp
  Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way
  Proceedings on Privacy Enhancing Technologies, 2016

2015

• Tibor Jager, Jörg Schwenk, Juraj Somorovsky
  On the Security of TLS 1.3 and QUIC Against Weaknesses in PKCS#1 v1.5 Encryption
  22nd ACM Conference on Computer and Communications Security - ACM CCS 2015
  Received the Best Contribution to the IETF Award for "outstanding research contributions benefitting the IETF TLS working group efforts to develop TLS 1.3" at the IETF TLS 1.3 - Ready or Not? Workshop, February 21, 2016, San Diego, CA, USA.
• Tibor Jager, Jörg Schwenk, Juraj Somorovsky
  Practical Invalid Curve Attacks on TLS-ECDH
  20th European Symposium on Research in Computer Security - ESORICS 2015
• Tibor Jager
  Verifiable Random Functions from Weaker Assumptions
  12th IACR Theory of Cryptography Conference - TCC 2015
• Christoph Bader, Dennis Hofheinz, Tibor Jager, Eike Kiltz, Yong Li
  Tightly-Secure Authenticated Key Exchange
  12th IACR Theory of Cryptography Conference - TCC 2015
• Florian Bergsma, Tibor Jager, Jörg Schwenk
  One-Round Key Exchange with Strong Security: An Efficient and Generic Construction in the Standard Model
  18th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2015
• Felix Heuer, Tibor Jager, Eike Kiltz, Sven Schäge
  On the Selective Opening Security of Practical Public-Key Encryption Schemes
  18th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2015
• Dennis Hofheinz, Tibor Jager
  Tightly Secure Signatures and Public-Key Encryption
  Designs, Codes and Cryptography, 2015
• Florian Böhl, Dennis Hofheinz, Tibor Jager, Jessica Koch, Christoph Striecks
  Confined Guessing: New Signatures From Standard Assumptions
  Journal of Cryptology, 2015
• Jia Liu, Tibor Jager, Saqib A. Kakvi, Bogdan Warinschi
  How to Build Time-Lock Encryption
  Designs, Codes and Cryptography, 2018

2014

• Nils Fleischhacker, Tibor Jager, Dominique Schröder
  On Tight Security Proofs for Schnorr Signatures
  20th Annual International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT 2014

2013

• Tibor Jager, Jörg Schwenk
  On the analysis of cryptographic assumptions in the generic ring model
  Journal of Cryptology, 2013
• Florian Böhl, Dennis Hofheinz, Tibor Jager, Jessica Koch, Jae Hong Seo, Christoph Striecks
  Practical Signatures From Standard Assumptions, see also this version
  32nd Annual International Conference on the Theory and Applications of Cryptographic Techniques - EUROCRYPT 2013
• Tibor Jager, Kenneth G. Paterson, Juraj Somorovsky
  One Bad Apple: Backwards Compatibility Attacks on State-of-the-Art Cryptography
  20th Annual Network & Distributed System Security Symposium - NDSS 2013

2012

• Tibor Jager, Sebastian Schinzel, Juraj Somorovsky
  Bleichenbacher's attack strikes again: breaking PKCS#1 v1.5 in XML Encryption
  17th European Symposium on Research in Computer Security - ESORICS 2012
• Dennis Hofheinz and Tibor Jager
  Tightly secure signatures and public-key encryption
  32nd International Cryptology Conference - CRYPTO 2012
• Tibor Jager, Florian Kohlar, Sven Schäge, Jörg Schwenk
  On the security of TLS-DHE in the standard model
  32nd International Cryptology Conference - CRYPTO 2012
• Dennis Hofheinz, Tibor Jager, Edward Knapp
  Waters signatures with optimal security reduction
  15th International Conference on Practice and Theory of Public-Key Cryptography - PKC 2012

2011

• Dennis Hofheinz, Tibor Jager, Eike Kiltz
  Short signatures from weaker assumptions
  17th International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT 2011
• Tibor Jager, Juraj Somorovsky
  How to break XML Encryption
  18th ACM Conference on Computer and Communications Security - ACM CCS 2011

2010

• Tibor Jager, Florian Kohlar, Sven Schäge, Jörg Schwenk
  Generic compilers for authenticated key exchange
  16th Annual International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT 2010
• Tibor Jager, Andy Rupp
  The semi-generic group model and applications to pairing-based cryptography
  16th Annual International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT 2010
• Kristiyan Haralambiev, Tibor Jager, Eike Kiltz, Victor Shoup
  Simple and efficient public-key encryption from Computational Diffie-Hellman in the standard model
  13th International Conference on Practice and Theory in Public Key Cryptography - PKC 2010

2009

• Tibor Jager, Jörg Schwenk
  On the analysis of cryptographic assumptions in the generic ring model
  15th Annual International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT 2009

2008

• Tibor Jager, Jörg Schwenk
  On the equivalence of generic group models
  Second International Conference on Provable Security - ProvSec 2008
• Sebastian Gajek, Tibor Jager, Mark Manulis, Jörg Schwenk
  A browser-based Kerberos authentication scheme
  13th European Symposium on Research in Computer Security - ESORICS 2008
• Kristina Altmann, Tibor Jager, Andy Rupp
  On black-box ring extraction and integer factorization
  35th International Colloquium on Automata, Languages and Programming - ICALP 2008

Books and Lecture Notes

• Tibor Jager
  Black-box models of computation in cryptology
  ISBN 978-3-8348-1989-5, Springer Spektrum Verlag, 2012
• Tibor Jager
  Digitale Signaturen
  Textbook-like lecture notes, first version published in 2012, frequently updated