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Persoonlijk profiel

Research profile

Goal:

Sven's goal is to contribute to a better understanding of cryptographic protocols to obtain more solid theoretical foundations and better protocols with high efficiency and strong security guarantees. A special focus of his work is i) the development of strong cryptographic models for complex cryptographic tasks that involve interaction between several parties, and ii) constructions that efficiently achieve strong security guarantees in these models.

Technical Interest:

Sven is particularly interested in realistic notions of security and privacy and the technical consequences for efficient and provably secure instantiations that they imply. A topic that he particularly focuses on is tight cryptographic reductions. At the same time, he is interested in revealing (and formally proving) the inherent limitations of cryptographic tasks and ways to circumvent such barriers.

Methods:

Sven's results rely on the provable security paradigm, a very rigorous method of arguing about a system's security guarantees. At the same time, he regularly uses complex theoretical techniques like meta-reductions to obtain impossibility results showing that no further improvement can be achieved. These results can then be used to argue that a given construction is optimal.

Link to Google Scholar Profile

 

Academic background

Sven is an Assistant Professor at the Department of Mathematics and Computer Science at TU/e. Before that, he held PostDoc positions in the cryptography groups of Eike Kiltz and Alexander May at Ruhr-University Bochum and Jens Groth at University College London.  In 2011, he finished his Ph.D. at Ruhr-University Bochum on secure digital signature schemes in the standard model.

Onderwijs en Doceren

Sven has been responsible for the following lectures on IT-Security:

  • Autumn 2021: Software Security  
    TU/e, Eindhoven, Netherlands.
  • Autumn 2021: IT-Security 2  
    TH Georg Agricola University, Bochum, Germany.
  • Spring 2021: IT-Security 1  
    TH Georg Agricola University, Bochum, Germany.
  • Spring 2021, 2020, 2019, 2018: IT-Security for the Humanities and Social Sciences (50 %). 
    Ruhr-Universität Bochum, Germany.
  • Spring 2021, 2020, 2019, 2018: IT-Security and Cryptography  
    Bergische Universität Wuppertal, Germany. 
  • Autumn 2017/18: Introduction to Information Security 
    Vitruvius Hochschule Leipzig, Germany.
  • Spring 2017: Communication Systems Security  
    Hochschule Rhein-Waal, Kamp-Lintfort, Germany.
  • Autumn 2016/17: Security and Privacy for Big Data 
    Ruhr-Universität Bochum, Germany.
  • Autumn 2015/16: Privacy-Preserving Authentication 
    Ruhr-Universität Bochum, Germany. 

Opleiding / Academische kwalificatie

Computer science, other, Doctor, Efficient and Provably Secure Signature Schemes in the Standard Model, Ruhr University Bochum

Datum van toekenning: 17 jun. 2011

Computer science, other, Master, Efficient Hash Collision Search Strategies on Special-Purpose Hardware, Ruhr University Bochum

Datum van toekenning: 20 dec. 2006

Externe posities

Scientific Manager, Horst Görtz Institute for IT-Security

aug. 2016feb. 2018

Student Counselor IT-Security, Ruhr University Bochum

feb. 2007apr. 2011

Vingerafdruk

Verdiep u in de onderzoeksgebieden waarop Sven Schäge actief is. Deze onderwerplabels komen uit het werk van deze persoon. Samen vormen ze een unieke vingerafdruk.
  • 1 Soortgelijke profielen

Samenwerkingen en hoofdonderzoeksgebieden uit de afgelopen vijf jaar

Recente externe samenwerking op landen-/regioniveau. Duik in de details door op de stippen te klikken of
  • Authenticated Key Exchange and Signatures with Tight Security in the Standard Model.

    Han, S., Jager, T., Kiltz, E., Liu, S., Pan, J., Riepel, D. & Schäge, S., 2021, Advances in Cryptology – CRYPTO 2021 - 41st Annual International Cryptology Conference, CRYPTO 2021, Proceedings. Malkin, T. & Peikert, C. (redactie). blz. 670-700 31 blz. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12828 LNCS).

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

    Open Access
    3 Citaten (Scopus)
  • Authenticated Key Exchange and Signatures with Tight Security in the Standard Model.

    Han, S., Jager, T., Kiltz, E., Liu, S., Pan, J., Riepel, D. & Schäge, S., 2021, In: IACR Cryptology ePrint Archive. 2021, blz. 863 1 blz.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademic

    Open Access
  • On the Impossibility of Purely Algebraic Signatures.

    Döttling, N., Hartmann, D., Hofheinz, D., Kiltz, E., Schäge, S. & Ursu, B., 2021, Theory of Cryptography - 19th International Conference, TCC 2021, Proceedings. Nissim, K., Waters, B. & Waters, B. (redactie). blz. 317-349 33 blz. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 13044 LNCS).

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

    Open Access
  • On the Impossibility of Short Algebraic Signatures.

    Döttling, N., Hartmann, D., Hofheinz, D., Kiltz, E., Schäge, S. & Ursu, B., 2021, In: IACR Cryptology ePrint Archive. 2021, blz. 738 1 blz.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademic

    Open Access
  • Tightly-Secure Authenticated Key Exchange, Revisited.

    Jager, T., Kiltz, E., Riepel, D. & Schäge, S., 2021, Advances in Cryptology – EUROCRYPT 2021 - 40th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Proceedings. Canteaut, A. & Standaert, F-X. (redactie). blz. 117-146 30 blz. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12696 LNCS).

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

    Open Access
    1 Citaat (Scopus)
  • Junior Scholar Award

    Schäge, Sven (Ontvanger), 2015

    Prijs: AndersWerk, activiteit of publicatie gerelateerde prijzen (lifetime, best paper, poster etc.)Wetenschappelijk