S7 – Secure and Scalable Blockchain Technology
This project will address the current scalability challenges of decentralized blockchain technology. The overall goal is to develop protocols that achieve similar efficiency as centralized systems, while at the same time guaranteeing strong security against realistic adversaries. To accomplish this goal, the project will investigate two main directions. First, it will develop novel consensus mechanisms with significantly improved transaction throughput and reduced latency. Second, the project will design off-chain protocols, which support high transaction throughput by keeping the vast majority of transactions off-chain.
Researchers
Poulami Das
Chair of Applied Cryptography
Research Interests:
- Provable security of cryptographic protocols
Lisa Eckey
Applied Cryptography
Research Interests:
- Provable security
- Blockchain technology
- Consensus mechanisms
- Smart contract security
- Fair exchange
Andreas Erwig
Applied Cryptography
Research Interests:
- Security of cryptographic protocols on blockchain technologies
- Smart contracts
Kristina Hostakova
Applied Cryptography
Research Interests:
- Provable security of Blockchain Protocols
- Non-malleable codes
Clara Paglialonga
Applied Cryptography
Research Interests:
- Provable security against physical attacks with particular focus on masking schemes
- Private circuits
- Randomness optimization
Sebastian Stammler
Applied Cryptography
Research Interests:
- Genomic privacy
- Developing privacy preserving protocols on genomic data
- Anonymization techniques for databases
Siavash Riahi
Applied Cryptography
Research Interests:
- payment and state channels
- off-chain protocols
- cryptographic Wallets
- key exchange protocols
- game theory and its application to cryptocurrencies
Maximilian Orlt
Applied Cryptography
Research Interests:
- Leakage-Resilient Cryptography
- Security of Cryptographic Protocols
- Symmetric Cryptography
Publications
Das, Poulami ; Faust, Sebastian ; Loss, Julian (2019):
A Formal Treatment of Deterministic Wallets.
In: ACM CCS 2019 - Symposium on Computer and Communications Security, London, UK, November, 11th -15th, [Konferenzveröffentlichung]
Das, Poulami ; Eckey, Lisa ; Frassetto, Tommaso ; Gens, David ; Hostáková, Kristina ; Jauernig, Patrick ; Faust, Sebastian ; Sadeghi, Ahmad-Reza (2019):
FastKitten: Practical Smart Contracts on Bitcoin.
In: 28th USENIX Security Symposium, Santa Clara, CA, USA, 14.-16.08.2019, [Konferenzveröffentlichung]
Dziembowski, Stefan ; Eckey, Lisa ; Faust, Sebastian ; Hesse, Julia ; Hostakova, Kristina (2019):
Multiparty Virtual State Channels.
In: Eurocrypt 2019, Darmstadt, IACR, In: 38th Annual International Conference on the Theory and Applications of Cryptographic Techniques, [Online-Edition: https://eurocrypt.iacr.org/2019/],
[Konferenzveröffentlichung]
Das, Poulami ; Eckey, Lisa ; Frassetto, Tommaso ; Gens, David ; Hostakova, Kristina ; Jauernig, Patrick ; Faust, Sebastian ; Sadeghi, Ahmad-Reza (2019):
FastKitten: Practical Smart Contracts on Bitcoin.
Cryptology ePrint Archive, Report 2019/154, [Online-Edition: https://eprint.iacr.org/2019/154],
[Report]
Dziembowski, Stefan ; Eckey, Lisa ; Faust, Sebastian ; Malinowski, Daniel (2019):
Perun: Virtual Payment Hubs over Cryptocurrencies.
IEEE Computer Society, In: 39th IEEE Symposium on Security and Privacy, THE HYATT REGENCY, SAN FRANCISCO, CA, MAY 21-23, 2018, S. 327-340, [Online-Edition: https://www.ieee-security.org/TC/SP2018/],
[Konferenzveröffentlichung]
Dziembowski, Stefan ; Faust, Sebastian ; Zebrowski, Karol (2019):
Simple Refreshing in the Noisy Leakage Model.
IACR, In: The 25th Annual International Conference on the Theory and Application of Cryptology and Information Security, Kobe, Japan, 8.12.-12.12. 2019, [Konferenzveröffentlichung]
Dziembowski, Stefan ; Eckey, Lisa ; Faust, Sebastian (2018):
FairSwap: How to fairly exchange digital goods.
In: Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security, ACM, In: 25th ACM Conference on Computer and Communications Security (CCS), Toronto, Canada, 15-19 October 2018, [Online-Edition: https://www.sigsac.org/ccs/CCS2018/],
[Konferenzveröffentlichung]
Dziembowski, Stefan ; Faust, Sebastian ; Hostakova, Kristina (2018):
General State Channel Networks.
2018In: Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security, ACM, In: 25th ACM Conference on Computer and Communications Security (CCS), Toronto, Canada, 15-19 October 2018, [Online-Edition: https://www.sigsac.org/ccs/CCS2018/],
[Konferenzveröffentlichung]
du Crest de Villeneuve, Come (2018):
Evaluation of the Efficiency of different Architectures and Pathfinding Algorithms.
TU Darmstadt, [Masterarbeit]
Amler, Hendrik (2018):
Evaluation of payment channel networks for micropayments.
TU Darmstadt, [Masterarbeit]
Varky, Jacek (2018):
TeePay – Using Trusted Execution Environments for Off-chain Payment.
TU Darmstadt, [Masterarbeit]
van der Wijden, Marius (2018):
Payment and State Channels in practice.
TU Darmstadt, [Masterarbeit]