About

My research addresses the construction and cryptanalysis of quantum-secure schemes and provably guaranteeing their security in the appropriate security models. Moreover, I am interested in how to transition cryptographic protocols and applications to be quantum-secure.

I am a researcher at SandboxAQ, CA, USA, located in Germany. Before I have been affiliated to the Technische Universität (TU) Darmstadt as a post doctoral researcher in the cryptoplexity group led by Marc Fischlin. Until early 2022, I have been affiliated the Institute for Quantum Computing (IQC) as a post doctoral fellow at the Department of Combinatorics & Optimization at the University of Waterloo (UW) in Waterloo, Ontario, Canada. At UW I have been working with Douglas Stebila and Michele Mosca. I have been a research visitor at the lattice program of the Simons Institute at UC Berkeley in spring 2020 and I interned at Microsoft Research, Redmond (US), during the summer 2019. Before, I was a post doctoral researcher in the Cryptography and computer algebra group at TU Darmstadt, Germany, where I received my Ph.D. in September 2018 under the supervision of Johannes Buchmann from TU Darmstadt.

I have been the principal submitter of qTESLA, a quantum-secure digital signature scheme that had been submitted to NIST’s post-quantum standardization effort. It has been accepted as a candidate of the second round as one of nine out of 20 schemes, but did not advance to the third round. For more information please visit qtesla.org.

Program committee membership:
2022:
CT-RSA 2022, AfricaCrypt 2022, Security Standards Research (SSR) 2022
2021:
LatinCrypt 2021, Selected Areas in Cryptography (SAC) 2021

Funding information:

  • BMBF Verbundprojekt “DemoQuantDT”, 03/2022-06/2022
  • Institute for Quantum Computing, in part funded by the Government of Canada; 08/2019- 02/2022
  • Discovery Accelerator Supplement grant RGPIN-2016-05146, funded by Natural Sciences and Engineering Research Council of Canada (NSERC); 08/2019- 02/2022
  • Collaboration center NUCC, program 927517, funded by National Research Council of Canada (NRC) and University of Waterloo; 08/2019- today
  • Contract 2L 165-180499/001/sv, “PQC Analysis”, funded by Public Works and Government Services Canada; 08/2019- 02/2022
  • Microsoft Research, Redmond, USA; 05/2019-07/2019
  • State Hesse, Landesstelle; 06/2014-02/2019
  • Collaborative research center “Cryptography-based Security Solutions: Enabling trust in new and next generation computing environments” (CROSSING), SFB 1119, funded by German Research Foundation (DFG); 06/2014-02/2019
  • Stipend, FIT–Internationale Forschungsaufenthaltein der Informationstechnologie für Doktoranden (FIT weltweit), 57041638, funded by German Academic Exchange Service (DAAD); 09/2016-11/2016