News

by Sebastian Faust, Carmit Hazay, David Kretzler, Benjamin Schlosser

by Francesco Berti, Ramat Gan, Chun Guo, Thomas Peters, Yaobin Shen, François-Xavier Standaert

POSE: Practical Off-chain Smart Contract Execution by Tommasso Frassetti, Patrick Jauernig, David Koisser, David Kretzler, Benjamin Schlosser, Sebastian Faust, Ahmad-Reza Sadeghi

Putting the Online Phase on a Diet: Covert Security from Short MACs by Sebastian Faust, Carmit Hazay, David Kretzler, Benjamin Schlosser

by Andreas Erwig, Siavash Riahi

by Sebastian Faust, Juliane Krämer, Maximilian Orlt, Patrick Struck

by Gianluca Brian, Sebastian Faust, Elena Micheli , Daniele Venturi

by Francesco Berti, Shivam Bhasin, Jakub Breier, Xiaolu Hou, Romain Poussier, François-Xavier Standaert, Balasz Udvarhely

by Poulami Das, Julia Hesse, Anja Lehmann

by Sebastian Faust, Carmit Hazay, David Kretzler, Benjamin Schlosser,

by Orfeas Thyfronitis Litos and Zeta Avarikioti

by Francesco Berti, Chun Guo, Thomas Peters, François-Xavier Standaert

by Lukas Aumayr, Oguzhan Ersoy, Andreas Erwig, Sebastian Faust, Kristina Hostáková, Matteo Maffei, Pedro Moreno-Sanchez and Siavash Riahi

by Gaëtan Cassiers, Sebastian Faust, Maximilian Orlt, François-Xavier Standaert

by Shweta Agrawal (IIT Madras), Monosij Maitra (TU-D), Vempati Narasimha Sai (IIT Madras), Shota Yamada (AIST, Japan)

by Poulami Das, Andreas Erwig, Sebastian Faust, Julian Loss, Siavash Riahi

by Sebastian Faust, Carmit Hazay, David Kretzler, Benjamin Schlosser

By Lukas Aumayr, Oğuzhan Ersoy, Andreas Erwig, Sebastian Faust, Kristina Hostáková , Matteo Maffei and Siavash Riahi

by Andreas Erwig, Sebastian Faust, Kristina Hostáková, Monosij Maitra and Siavash Riahi

by Gilles Barthe, Marc Gourjon, Benjamin Gregoire, Maximilian Orlt, Clara Paglialonga, Lars Porth

by Arnold Abromeit, Florian Bache, Leon A. Becker, Marc Gourjon, Tim Güneysu, Sabrina Jorn, Amir Moradi, Maximilian Orlt, Falk Schellenberg

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.