Felix Günther

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Welcome

I am a postdoctoral researcher in the Security and Cryptography group working with Mihir Bellare at UC San Diego, supported by a fellowship of the German Research Foundation (DFG).

Prior to that, I was a postdoc in the Cryptography and Complexity Theory (Cryptoplexity) group led by Marc Fischlin at Technische Universität Darmstadt. I obtained my Ph.D. in Computer Science from TU Darmstadt in February 2018 under the supervision of Marc Fischlin, and, earlier, M.Sc. degrees in Computer Science and IT Security from TU Darmstadt. I am a member of the IACR.

Research Interests

I am interested in applied cryptography enabling computer security, and provable cryptographic security more specifically. My work aims to narrow the gap between the theoretical understanding and practical security of real-world cryptographic systems. To this end, I especially investigate the provable security of (Internet) cryptographic protocols for key exchange and secure channels, for example the prominent Transport Layer Security (TLS) protocol. In doing so, my work broadly encompasses theoretical modeling of security properties and assumptions, provable-security analyses of real-world protocols, as well as guidance on practical protocol design.

News

2019-09-24Our paper Breakdown Resilience of Key Exchange Protocols: NewHope, TLS 1.3, and Hybrids [4] received the best paper award at ESORICS 2019
2019-08-06I received the 2019 Dr.-Heinz-Sebiger Dissertation Award on Data Protection and IT Security of the DATEV-Stiftung Zukunft foundation
2019-07-27I received the ERCIM STM WG 2019 Award for the Best Ph.D. Thesis on Security and Trust Management, for which I will give an invited talk at STM 2019
2019-06-08Happy that Matilda Backendal successfully defended her Master thesis Punc­turable Symmetric KEMs for Forward-Secret 0-RTT Key Exchange I co-advised
2019-05-23Runner-up for the CAST/GI Doctoral Dissertation Award in IT Security

Academic Career and Education

since 2018Postdoctoral researcher in the Security and Cryptography group at UC San Diego
2018Postdoctoral researcher in the Cryptoplexity group at TU Darmstadt
2013–2018Ph.D. in Computer Science, TU Darmstadt
2010–2013M.Sc. in Computer Science, TU Darmstadt
2010–2013M.Sc. in IT Security, TU Darmstadt
2007–2010B.Sc. in Computer Science, TU Darmstadt

Grants, Awards, and Honors

2018–2020DFG (German Research Foundation) Research Fellowship Grant: Foundations and Real-World Aspects of Secure Cryptographic Connections
2019Best paper award at ESORICS 2019 for [4]
2019Dr.-Heinz-Sebiger Dissertation Award on Data Protection and IT Security of the DATEV-Stiftung Zukunft foundation
2019ERCIM (European Research Consortium for Informatics and Mathematics) STM WG 2019 Award for the Best Ph.D. Thesis on Security and Trust Management
2019Runner-up for the CAST/German Informatics Society Doctoral Dissertation Award in IT Security (CAST/GI Promotionspreis IT-Sicherheit)
2017, 2018Collaboration Award 2017 for [5] and 2018 for [1] of the collaborative research center CROSSING at TU Darmstadt
2018Best lecture award for lecture Real World Crypto, TU Darmstadt, summer term 2017 (teaching assistant, award for overall lecture by the computer science student's body, based on evaluations by students)
2015Best student paper award at ACISP 2015 for [14]
2011CAST Advancement Award IT Security (CAST-Förderpreis IT-Sicherheit): 2nd prize in category "Bachelor and Study Theses" for my bachelor thesis [26]
2007–2013Scholarship from the German National Academic Foundation (Studienstiftung des deutschen Volkes)

Professional Activities

May 2019EUROCRYPT 2019 Workshop Co-Chair
Sep 2018Lecturer at the ECRYPT-NET School on Integrating Advanced Cryptography with Applications
Feb–Dec 2011Collaboration in the project "Group Signatures: Privacy-Preserving Authentication Methods", a survey for the German Federal Office for Information Security (BSI), conducted by the Cryptographic Protocols group at TU Darmstadt
The resulting survey can be found at www.bsi.bund.de.

Program Commitee (PC) Membership

Peer Reviewing for Scientific Conferences and Journals

  • 2019: EUROCRYPT, ACM CCS
  • 2018: ACM CCS
  • 2017: EUROCRYPT, PKC, ACISP, Latincrypt
  • 2016: CRYPTO
  • 2015: Latincrypt, ACM CCS
  • 2014: INFOCOM, TCC, ACNS, ASIACRYPT, Elsevier Information Processing Letters
  • 2013: Elsevier Computer Communications Journal

Research Visits

Mar 2017 UC San Diego, La Jolla, CA, USA – Security and Cryptography Group
Host: Prof. Mihir Bellare
Feb 2017 Stanford University, Stanford, CA, USA – Applied Cryptography Group
Host: Prof. Dan Boneh
Jan 2017 Cornell Tech University, New York City, NY, USA – Security Group
Host: Prof. Thomas Ristenpart
Jan 2017 Johns Hopkins University, Baltimore, MD, USA – Information Security Institute
Host: Prof. Matthew D. Green
Jan 2017 IBM T.J. Watson Research Center, Yorktown Heights, NY, USA – Cryptography Research Group
Host: Dr. Hugo Krawczyk
Apr 2016 Ruhr-Universität Bochum, Bochum, Germany – Lehrstuhl für Netz- und Datensicherheit
Hosts: Prof. Dr. Jörg Schwenk and Dr. Tibor Jager
Jun–Jul 2015 Queensland University of Technology, Brisbane, Australia – Information Security Discipline
Host: Senior Lecturer Dr. Douglas Stebila
May 2015 Technische Universität Dresden, Dresden, Germany – Lehrstuhl für Datenschutz und Datensicherheit
Host: Prof. Dr. Thorsten Strufe
Jan 2015 Royal Holloway, University of London, Egham, UK – Information Security Group
Host: Prof. Kenneth G. Paterson

Research Impact and Media Attention

Teaching

University of California San Diego

winter quarter 2019 TLS Crypto Seminar

Graduate-level (informal) seminar with both lectures and paper presentations

Technische Universität Darmstadt

winter term 2018/2019 Organization of the graduate-level seminar Reading the Crypto Classics
summer term 2018 Teaching assistant for the lecture Real World Crypto by Marc Fischlin
summer term 2018 Organization of the graduate-level seminar Reading the Crypto Classics
winter term 2017/2018 Organization of the graduate-level seminar Reading the Crypto Classics
summer term 2017 Teaching assistant for the lecture Real World Crypto by Marc Fischlin

(Best lecture award for overall lecture, by the computer science student's body, based on evaluations by students)

winter term 2016/2017 Teaching assistant for the research seminar Research-Oriented Cryptography by Marc Fischlin
winter term 2015/2016 Teaching assistant for the lecture Functional and Object-oriented Programming Concepts (Funktionale und objektorientierte Programmierkonzepte, ex. Grundlagen der Informatik 1) by Marc Fischlin
winter term 2013/2014 Teaching assistant for the lecture Introduction to Computer Science 1 (Grundlagen der Informatik 1) by Marc Fischlin
winter term 2011/2012 Tutor for the lecture Introduction to Cryptography (Einführung in die Kryptographie) by Marc Fischlin

Advising

  • Matilda Backendal (Master, Jan–Jun 2019). Puncturable Symmetric KEMs for Forward-Secret 0-RTT Key Exchange.

    Co-Adivsor: Thomas Johansson (Lund University, Sweden)

Felix Günther

Dr. rer. nat. Felix Günther

University of California San Diego
CSE Department
Security and Cryptography Group
9500 Gilman Drive
La Jolla, CA 92093-0404
USA

Office:EBU3B, Room 4202
Email:mail[DELETE-THIS]@felixguenther.info
PGP:0x52AF0200D3F1700E

UCSD

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