The authors of this paper are: Stefan Dziembowski, Grzegorz Fabiański, Sebastian Faust, Siavash Riahi

The paper is accepted at “ITCS 2021”

"Responsible Vulnerability Disclosure in Cryptocurrencies"

The article discusses the challenges of disclosing bugs and dealing with disclosures in open and distributed cryptocurrencies. Bugs in blockchain based systems can lead to severe security and privacy problems. Sometimes, these issues are resolved without much fanfare following a disclosure by the individual who found the hole. In other cases, they result in costly losses due to theft, exploits, unauthorized coin creation, and destruction. These experiences provide regular fodder for outrageous news headlines. In this article, we focus on the disclosure process itself, which presents unique challenges compared to other software projects.

"Cost Fairness for Blockchain-Based Two-Party Exchange Protocols"

Blockchains can guarantee fairness during the exchange of digital goods such that in a two-party exchange no one is defrauded by a malicious opponent.

"Deterministic Wallets in a Quantum World"

Most blockchain solutions are susceptible to quantum attackers as they rely on cryptography that is known to be insecure in the presence of quantum adversaries. In this work we advance the study of quantum resistant blockchain solutions by giving a quantum resistant construction of a deterministic wallet scheme.

The paper “Fuzzy Asymmetric Password-Authenticated Key Exchange” is accepted at “Asiacrypt 2020”. The authors of this paper are Andreas Erwig, Julia Hesse, Maximilian Orlt and Siavash Riahi.

Success for CYSEC and CROSSING researcher

Kristina Hostáková – Ph.D. student from the Applied Cryptography research group at TU Darmstadt – was selected to receive the Women Techmakers Scholarship for computer science Scholarship sponsored by Google as one of only 20 persons from the EMEA region.

Congratulations to Lisa Eckey, Sebastian Faust, and Benjamin Schlosser for their paper “OptiSwap: Fast Optimistic Fair Exchange” which has been accepted to AsiaCCS 2020, the 15th ACM ASIA Conference on Computer and Communications Security, to be held in Taipei, Taiwan on June 1-5, 2020.