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IT Security and Cryptography

Prof. Dr.-Ing. Tibor Jager


  • New team member: Jan Drees
    A hearty welcome to Jan Drees! He will focus his research on applications of modern machine learning... [more]
  • Interview about FIDO2
    Prof. Tibor Jager was asked by the Handelsblatt about the FIDO2 standard. [more]
  • New team members: Jutta Maerten and Pascal Bemmann
    A warm welcome to Jutta Maerten, who is strengthening our team in the administrative area, and... [more]
  • DAAD to fund international cooperation with NTNU Trondheim
    The joint research proposal "Key Exchange for Today's Internet" by Dr Gareth Davies (BUW) and... [more]
  • Accepted paper at PETS 2020
    The work "T0RTT: Non-Interactive Immediate Forward-Secret Single-Pass Circuit Construction" by Kai... [more]
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Accepted paper at ACNS 2020

The paper "Offline Witness Encryption with Semi-Adaptive Security" by Peter Chojka, Tibor Jager, and Saqib Kakvi was accepted for publication at the 18th International Conference on Applied Cryptography and Network Security.


The authors describe a new approach to construct Offline Witness Encryption schemes, which provably achieves stronger security than previous schemes.

ACNS 2020 will take place in Rome, Italy, from June 22 until June 25, 2020.