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56 Publications
2022 | Dissertation | LibreCat-ID: 29763 | 
D. Niehues, More Efficient Techniques for Adaptively-Secure Cryptography. 2022.
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2021 | Book Chapter | LibreCat-ID: 22057
T. Jager, R. Kurek, and D. Niehues, “Efficient Adaptively-Secure IB-KEMs and VRFs via Near-Collision Resistance,” in Public-Key Cryptography – PKC 2021, Cham, 2021.
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2021 | Book Chapter | LibreCat-ID: 22059
D. Niehues, “Verifiable Random Functions with Optimal Tightness,” in Public-Key Cryptography – PKC 2021, Cham, 2021.
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2020 | Book Chapter | LibreCat-ID: 21396
T. Jager and D. Niehues, “On the Real-World Instantiability of Admissible Hash Functions and Efficient Verifiable Random Functions,” in Lecture Notes in Computer Science, Cham, 2020.
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2018 | Conference Paper | LibreCat-ID: 3105
D. Derler, T. Jager, D. Slamanig, and C. Striecks, “Bloom Filter Encryption and Applications to Efficient Forward-Secret 0-RTT Key Exchange,” in Advances in Cryptology - EUROCRYPT 2018 - 37th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Tel Aviv, Israel, April 29 - May 3, 2018 Proceedings, Part III, 2018, pp. 425--455.
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2018 | Conference Paper | LibreCat-ID: 5861
T. Jager and R. Kurek, “Short Digital Signatures and ID-KEMs via Truncation Collision Resistance,” in Advances in Cryptology - ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Brisbane, QLD, Australia, December 2-6, 2018, Proceedings, Part II, 2018, pp. 221–250.
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2018 | Conference Paper | LibreCat-ID: 5862
T. Jager, R. Kurek, and J. Pan, “Simple and More Efficient PRFs with Tight Security from LWE and Matrix-DDH,” in Advances in Cryptology - ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Brisbane, QLD, Australia, December 2-6, 2018, Proceedings, Part III, 2018, pp. 490–518.
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2018 | Conference Paper | LibreCat-ID: 5438
K. Gjøsteen and T. Jager, “Practical and Tightly-Secure Digital Signatures and Authenticated Key Exchange,” in Advances in Cryptology - CRYPTO 2018 - 38th Annual International Cryptology Conference, Santa Barbara, CA, USA, August 19-23, 2018, Proceedings, Part II, 2018.
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2018 | Conference Paper | LibreCat-ID: 5442
T. Jager, S. Kakvi, and A. May, “On the Security of the PKCS#1 v1.5 Signature Scheme,” in Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security - CCS ’18, 2018.
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2017 | Conference Paper | LibreCat-ID: 3109
B. Hale, T. Jager, S. Lauer, and J. Schwenk, “Simple Security Definitions for and Constructions of 0-RTT Key Exchange,” in Applied Cryptography and Network Security - 15th International Conference, ACNS 2017, Kanazawa, Japan, July 10-12, 2017, Proceedings, 2017, pp. 20--38.
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2017 | Conference Paper | LibreCat-ID: 3110
F. Günther, B. Hale, T. Jager, and S. Lauer, “0-RTT Key Exchange with Full Forward Secrecy,” in Advances in Cryptology - EUROCRYPT 2017 - 36th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Paris, France, April 30 - May 4, 2017, Proceedings, Part III, 2017, pp. 519--548.
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2017 | Conference Paper | LibreCat-ID: 3111
T. Jager, M. Stam, R. Stanley-Oakes, and B. Warinschi, “Multi-key Authenticated Encryption with Corruptions: Reductions Are Lossy,” in Theory of Cryptography - 15th International Conference, TCC 2017, Baltimore, MD, USA, November 12-15, 2017, Proceedings, Part I, 2017, pp. 409--441.
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2017 | Journal Article | LibreCat-ID: 9607
S. Kakvi and E. Kiltz, “Optimal Security Proofs for Full Domain Hash, Revisited,” Journal of Cryptology, pp. 276–306, 2017.
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2016 | Journal Article | LibreCat-ID: 3114
T. Jager and A. Rupp, “Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way,” PoPETs, no. 3, pp. 62--82, 2016.
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2016 | Conference Paper | LibreCat-ID: 3115
D. Hofheinz, T. Jager, D. Khurana, A. Sahai, B. Waters, and M. Zhandry, “How to Generate and Use Universal Samplers,” in Advances in Cryptology - ASIACRYPT 2016 - 22nd International Conference on the Theory and Application of Cryptology and Information Security, Hanoi, Vietnam, December 4-8, 2016, Proceedings, Part II, 2016, pp. 715--744.
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2016 | Conference Paper | LibreCat-ID: 3117
C. Bader, T. Jager, Y. Li, and S. Schäge, “On the Impossibility of Tight Cryptographic Reductions,” in Advances in Cryptology - EUROCRYPT 2016 - 35th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Vienna, Austria, May 8-12, 2016, Proceedings, Part II, 2016, pp. 273--304.
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2016 | Conference Paper | LibreCat-ID: 3118
D. Hofheinz, T. Jager, and A. Rupp, “Public-Key Encryption with Simulation-Based Selective-Opening Security and Compact Ciphertexts,” in Theory of Cryptography - 14th International Conference, TCC 2016-B, Beijing, China, October 31 - November 3, 2016, Proceedings, Part II, 2016, pp. 146--168.
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2016 | Journal Article | LibreCat-ID: 5446
T. Jager and A. Rupp, “Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way,” Proceedings on Privacy Enhancing Technologies, vol. 2016, no. 3, pp. 62–82, 2016.
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2015 | Book Chapter | LibreCat-ID: 2921 |
O. Blazy, S. Kakvi, E. Kiltz, and J. Pan, “Tightly-Secure Signatures from Chameleon Hash Functions,” in Lecture Notes in Computer Science, Berlin, Heidelberg: Springer Berlin Heidelberg, 2015, pp. 256–279.
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2015 | Conference Paper | LibreCat-ID: 3121
T. Jager, J. Schwenk, and J. Somorovsky, “On the Security of TLS 1.3 and QUIC Against Weaknesses in PKCS#1 v1.5 Encryption,” in Proceedings of the 22nd ACM SIGSAC Conference on Computer and Communications Security, Denver, CO, USA, October 12-16, 2015, 2015, pp. 1185--1196.
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2015 | Conference Paper | LibreCat-ID: 3122
T. Jager, J. Schwenk, and J. Somorovsky, “Practical Invalid Curve Attacks on TLS-ECDH,” in Computer Security - ESORICS 2015 - 20th European Symposium on Research in Computer Security, Vienna, Austria, September 21-25, 2015, Proceedings, Part I, 2015, pp. 407--425.
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2015 | Conference Paper | LibreCat-ID: 3123
F. Heuer, T. Jager, E. Kiltz, and S. Schäge, “On the Selective Opening Security of Practical Public-Key Encryption Schemes,” in Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings, 2015, pp. 27--51.
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2015 | Conference Paper | LibreCat-ID: 3124
F. Bergsma, T. Jager, and J. Schwenk, “One-Round Key Exchange with Strong Security: An Efficient and Generic Construction in the Standard Model,” in Public-Key Cryptography - PKC 2015 - 18th IACR International Conference on Practice and Theory in Public-Key Cryptography, Gaithersburg, MD, USA, March 30 - April 1, 2015, Proceedings, 2015, pp. 477--494.
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2015 | Conference Paper | LibreCat-ID: 3126
C. Bader, D. Hofheinz, T. Jager, E. Kiltz, and Y. Li, “Tightly-Secure Authenticated Key Exchange,” in Theory of Cryptography - 12th Theory of Cryptography Conference, TCC 2015, Warsaw, Poland, March 23-25, 2015, Proceedings, Part I, 2015, pp. 629--658.
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2014 | Conference Paper | LibreCat-ID: 3128
N. Fleischhacker, T. Jager, and D. Schröder, “On Tight Security Proofs for Schnorr Signatures,” in Advances in Cryptology - ASIACRYPT 2014 - 20th International Conference on the Theory and Application of Cryptology and Information Security, Kaoshiung, Taiwan, R.O.C., December 7-11, 2014. Proceedings, Part I, 2014, pp. 512--531.
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2013 | Conference Paper | LibreCat-ID: 3130
F. Böhl, D. Hofheinz, T. Jager, J. Koch, J. Hong Seo, and C. Striecks, “Practical Signatures from Standard Assumptions,” in Advances in Cryptology - EUROCRYPT 2013, 32nd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Athens, Greece, May 26-30, 2013. Proceedings, 2013, pp. 461--485.
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2013 | Conference Paper | LibreCat-ID: 3131
T. Jager, K. G. Paterson, and J. Somorovsky, “One Bad Apple: Backwards Compatibility Attacks on State-of-the-Art Cryptography,” in 20th Annual Network and Distributed System Security Symposium, NDSS 2013, San Diego, California, USA, February 24-27, 2013, 2013.
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2012 | Book Chapter | LibreCat-ID: 2919
S. Kakvi and E. Kiltz, “Optimal Security Proofs for Full Domain Hash, Revisited,” in Advances in Cryptology – EUROCRYPT 2012, Berlin, Heidelberg: Springer Berlin Heidelberg, 2012, pp. 537–553.
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2012 | Dissertation | LibreCat-ID: 3132
T. Jager, On black-box models of computation in cryptology. Ruhr University Bochum, 2012.
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2012 | Conference Paper | LibreCat-ID: 3133
T. Jager, F. Kohlar, S. Schäge, and J. Schwenk, “On the Security of TLS-DHE in the Standard Model,” in Advances in Cryptology - CRYPTO 2012 - 32nd Annual Cryptology Conference, Santa Barbara, CA, USA, August 19-23, 2012. Proceedings, 2012, pp. 273--293.
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2012 | Conference Paper | LibreCat-ID: 3135
T. Jager, S. Schinzel, and J. Somorovsky, “Bleichenbacher’s Attack Strikes again: Breaking PKCS#1 v1.5 in XML Encryption,” in Computer Security - ESORICS 2012 - 17th European Symposium on Research in Computer Security, Pisa, Italy, September 10-12, 2012. Proceedings, 2012, pp. 752--769.
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2012 | Conference Paper | LibreCat-ID: 3136
D. Hofheinz, T. Jager, and E. Knapp, “Waters Signatures with Optimal Security Reduction,” in Public Key Cryptography - PKC 2012 - 15th International Conference on Practice and Theory in Public Key Cryptography, Darmstadt, Germany, May 21-23, 2012. Proceedings, 2012, pp. 66--83.
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2011 | Conference Paper | LibreCat-ID: 3137
D. Hofheinz, T. Jager, and E. Kiltz, “Short Signatures from Weaker Assumptions,” in Advances in Cryptology - ASIACRYPT 2011 - 17th International Conference on the Theory and Application of Cryptology and Information Security, Seoul, South Korea, December 4-8, 2011. Proceedings, 2011, pp. 647--666.
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2010 | Conference Paper | LibreCat-ID: 3139
T. Jager, F. Kohlar, S. Schäge, and J. Schwenk, “Generic Compilers for Authenticated Key Exchange,” in Advances in Cryptology - ASIACRYPT 2010 - 16th International Conference on the Theory and Application of Cryptology and Information Security, Singapore, December 5-9, 2010. Proceedings, 2010, pp. 232--249.
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2010 | Conference Paper | LibreCat-ID: 3140
T. Jager and A. Rupp, “The Semi-Generic Group Model and Applications to Pairing-Based Cryptography,” in Advances in Cryptology - ASIACRYPT 2010 - 16th International Conference on the Theory and Application of Cryptology and Information Security, Singapore, December 5-9, 2010. Proceedings, 2010, pp. 539--556.
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2010 | Conference Paper | LibreCat-ID: 3141
K. Haralambiev, T. Jager, E. Kiltz, and V. Shoup, “Simple and Efficient Public-Key Encryption from Computational Diffie-Hellman in the Standard Model,” in Public Key Cryptography - PKC 2010, 13th International Conference on Practice and Theory in Public Key Cryptography, Paris, France, May 26-28, 2010. Proceedings, 2010, pp. 1--18.
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