Stellenausschreibung Nr. 1272/2025

PhD Candidate (m/f/d) in Computer Science / Cryptography for Research in the Field of Physical Cryptography

Tätigkeitsbeschreibung

The cryptocurrency Bitcoin operates without a central authority. This is made possible by (digital) proof of work, which, however, comes with enormous energy consumption and CO₂ emissions. Our project transfers this principle into the physical world: we are conducting research on physical one-way functions, reproducible physical processes that generate measurable outputs from input parameters, but for which solving the inverse problem is difficult. Based on this, we are developing a proof of physical work protocol that has the potential to significantly reduce global CO₂ emissions.

As an interdisciplinary junior research group, we are opening up a new field of research at the interface of cryptography, engineering, and natural sciences. The project runs for five years and is funded by the Carl-Zeiss-Stiftung.

Further information can be found here: https://doi.org/10.1002/advs.202409386

Your Tasks

  • Defining security. You define security requirements for physical one-way functions
  • Security analysis. You test non-invertibility using machine learning attacks
  • Protocol design. You conceptualize a proof of physical work protocol and design attack strategies against it
  • Blockchain simulation. You simulate a blockchain network based on this protocol and analyze its security
  • Scientific communication. You publish your results and present them at conferences
  • Teaching. You contribute to teaching activities at the institute
Persönliche Qualifikation
  • You have obtained a Master’s degree in Computer Science, preferably with a focus on cryptography and are highly proficient in spoken and written English
  • You have strong interest in theoretical cryptography as well as technical aspects, machine learning, and simulation
  • You show initiative, motivation, creativity, and strong communication skills
  • You’re willing to travel internationally, cooperate with partners, and present your work at conferences
Organisationseinheit

Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)

Eintrittstermin

1. Februar 2026

Salary

Salary category 13 TV-L, depending on the fulfillment of professional and personal requirements.

Contract duration

limited for  5 years, with the possibility of completing a PhD alongside the project

Application up to

October 31, 2025

Contact person in line-management

For further information, please contact Frank Rhein, E-Mail:  frank.rhein@kit.edu .

Application

Please apply with your documents via the KIT application portal. Include a cover letter describing your motivation, your CV, and copies of relevant certificates.

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