christian janson
Bild: Katrin Binner
I am an Athene Young Investigator in Cryptography and Information Security affiliated to the Cryptoplexity team led by Marc Fischlin at Technische Universität Darmstadt in which I have been a Postdoc before as well.
Prior to this I was a Ph.D. student in the Information Security Group at Royal Holloway, University of London under the supervision of Carlos Cid. It all began at Universität Bremen where I studied mathematics and completed my diploma in the AlZAGK group under the supervision of Michael Hortmann.
I am a member of the IACR and my Erdös number is 3.
research interests
My main (current) research interests are:
verifiable outsourced computations
key exchange
secure channels
authenticated encryption
signature schemes
leakage-resilient cryptography
NEWS
08.12.2021: Our paper Post-quantum asynchronous deniable key exchange and the Signal handshake (joint work with Jacqueline Brendel, Rune Fiedler, Felix Günther, and Douglas Stebila) has been accepted to PKC 2022.
02.11.2021: Our talk Making Signal Post-quantum Secure: Post-quantum Asynchronous Deniable Key Exchange from Key Encapsulation and Designated Verifier Signatures has been accepted to RWC 2022. This talk is based on joint work with Jacqueline Brendel, Rune Fiedler, Felix Günther, and Douglas Stebila and the paper is available on ePrint.
01.09.2021: Our paper BlindOR: An Efficient Lattice-based Blind Signature Scheme from OR-Proofs (joint work with Nabil Alkeilani Alkadri and Patrick Harasser) has been accepted to CANS 2021. The paper will be available soon.
20.08.2021: I will serve as a Programm Co-Chair with Thalia Laing at SSR 2022. Stay tuned for more information.
30.04.2021: An article about myself and my resreach as an Athene Young Investigator has appeared.
academic career and education
since April 2021: Athene Young Investigator in the Cryptoplexity team, Technische Universität Darmstadt
2017-2021: Postdoctoral researcher in the Cryptoplexity team, Technische Universität Darmstadt
2012-2016: Ph.D. in Information Security, Royal Holloway, University of London
2006-2012: Diploma in mathematics, Universität Bremen
professional activities
2022: Security Standardisation Research Conference Program Co-Chair
May 2019: Eurocrypt 2019 Workshop General Co-Chair
since March 2017: member of examining board (Prüfungskommission) in the computer science department
peer reviewing
Scientific Conferences
2022: Eurocrypt
2021: Eurocrypt, Crypto, iPAT
2020: PKC, Crypto, iPAT
2019: PKC, Crypto, Asiacrypt, IMA CC, iPAT
2018: Financial Cryptography, PKC, CT-RSA, Crypto, CCS, iPAT, Asiacrypt
2017: ISSAC, AEIT, ISC
2016: CT-RSA
2015: ESORICS, ACNS, CT-RSA
2014: SAC
Journals
2021: Journal of Cryptology, Transactions on Information Forensics and Security
2017: Journal of Designs, Codes and Cryptography
2016: Journal of Designs, Codes and Cryptography, IEEE Transactions on Information Forensics and Security
awards
2018: Best Teaching Award for Lecture Real World Crypto, TU Darmstadt, summer term 2017 (teaching assistant)
research visits
January 2019: UCSD, San Diego, USA - Dep. of Computer Science and Engineering
Host: Dr. Felix GüntherSeptember 2017: NTNU Trondheim, Trondheim, NO - Dep. of Information Security and Communication Technology
Host: Prof. Colin Boyd & Dr. Gareth T. DaviesAugust 2015: Universität Mannheim, Mannheim, GER - Dependable Systems Engineering
Host: Prof. Dr. Frederik ArmknechtMai 2015: Universität Mannheim, Mannheim, GER - Dependable Systems Engineering
Host: Prof. Dr. Frederik ArmknechtSupervision
In case you wish to write a Bachelor/Master thesis with me then please contact me via email.
Master
R. F. (Nov 2019 - May 2020) - Stronger Security Notions for Post-Quantum Signature Schemes
O. K. (Dec 2019 - Dec 2020) - Formale Verifikation von Bluetooth
Bachelor
T. D. (Sep 2021 - Jan 2022) - How to designate a verifier in designated-verifier siganture schemes
S. A. (Dec 2020 - May 2021) - Modifikation eines Schlüsselaustauschprotokolls und CrySL-Rules für CogniCrypt
R. K. (Nov 2020 - Mar 2021) - Analyse der Authentifizierungsmethode der VDV Kernapplikation
F.B. (May - Sep 2020) - Security of the FIDO2 Standard
T. K. (May - July 2019) - Sicherheit des USB-Typ-C Authentifizierungsprotokolls
J.-P. M. (Apr - Jul 2019) - Analysis of the Current State of Non Memory-hard Password-based Cryptographic Primitives