Lena Heimberger

About

I am a PhD student at the Institute of Applied Information and Communication Security at the University of Technology in Graz, working under the supervision of Christian Rechberger. My research focuses on privacy-preserving protocols, especially OPRFs, Zero-Knowledge Proofs and messaging protocols.

Publications

1. OPRFs from Isogenies: Designs and Analysis
   Lena Heimberger, Tobias Hennerbichler, Fredrik Meisingseth, Sebastian Ramacher, Christian Rechberger (AsiaCCS, 2024)
   eprint github repository presentation slides

Other

• Lecture Notes: An introduction to mathematical Lattices for Computer Scientists, under continous developement.
• SPHINCS+ implementation in Java, done as a part of an internship at the Insitute of Applied Information and Communication Security in Graz, Austria
  
• Lattice-ZK, the master project of my student Florian Lugstein, implementing the zero-knowledge range proof system Lantern in SAGE. Aside from being the first implementation of the scheme, he took care to explain every step necessary. This makes it a good introduction to lattice-based zero-knowlege proofs and lattice cryptography in general. You can also try out an interactive version hosted on Binder (may take a while to load)!
  
• The big table of post-quantum friendly OPRFs, which is an ongoing project collecting all post-quantum friendly OPRFs in a table.

Contact

• University Page
  
• Institute Page
  
• Email: given name dot last name ät tugraz dot at
• Github
  

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