27 citations · 80 across the 11 of their papers we have counts for
8 papers · 1 filter
Seldom: An Anonymity Network with Selective Deanonymization
Eric Wagner, Roman Matzutt, Martin Henze
While anonymity networks such as Tor provide invaluable privacy guarantees to society, they also enable all kinds of criminal activities. Consequently, many blameless citizens shy…
An Interdisciplinary Survey on Information Flows in Supply Chains
Jan Pennekamp, Roman Matzutt, Christopher Klinkmüller +12
Supply chains form the backbone of modern economies and therefore require reliable information flows. In practice, however, supply chains face severe technical challenges, especial…
Poster: Accountable Processing of Reported Street Problems
Roman Matzutt, Jan Pennekamp, Klaus Wehrle
Municipalities increasingly depend on citizens to file digital reports about issues such as potholes or illegal trash dumps to improve their response time. However, the responsible…
Scalable and Privacy-Focused Company-Centric Supply Chain Management
Eric Wagner, Roman Matzutt, Jan Pennekamp +4
Blockchain technology promises to overcome trust and privacy concerns inherent to centralized information sharing. However, current decentralized supply chain management systems do…
CoinPrune: Shrinking Bitcoin's Blockchain Retrospectively
Roman Matzutt, Benedikt Kalde, Jan Pennekamp +3
Popular cryptocurrencies continue to face serious scalability issues due to their ever-growing blockchains. Thus, modern blockchain designs began to prune old blocks and rely on re…
Do I Get the Privacy I Need? Benchmarking Utility in Differential Privacy Libraries
Gonzalo Munilla Garrido, Joseph Near, Aitsam Muhammad +3
An increasing number of open-source libraries promise to bring differential privacy to practice, even for non-experts. This paper studies five libraries that offer differentially p…
Utilizing Public Blockchains for the Sybil-Resistant Bootstrapping of Distributed Anonymity Services
Roman Matzutt, Jan Pennekamp, Erik Buchholz +1
Distributed anonymity services, such as onion routing networks or cryptocurrency tumblers, promise privacy protection without trusted third parties. While the security of these ser…
How to Securely Prune Bitcoin's Blockchain
Roman Matzutt, Benedikt Kalde, Jan Pennekamp +3
Bitcoin was the first successful decentralized cryptocurrency and remains the most popular of its kind to this day. Despite the benefits of its blockchain, Bitcoin still faces seri…