6 papers
The Consensus Number of Untraceable Cryptocurrencies
Christian Cachin, David Lehnherr, Juan Villacis +1
Sender untraceability hides the account spent by a cryptocurrency transfer among a set of candidates, its masking set. What a transfer does to that set separates two designs: class…
Symmetry all the way down
Ignacio Amores-Sesar, Christian Cachin, Simon Holmgaard Kamp +1
Asymmetric trust generalizes classical symmetric quorum systems by allowing each process to specify its own failure assumptions. While this flexibility enables tolerance of strictl…
Simple-IT: Practical Low-Latency Signature-Free BFT Consensus
Qianyu Yu, Juan Villacis, Giuliano Losa +2
Recent advances in quantum computing pose a looming threat to most current Byzantine fault-tolerant (BFT) consensus protocols, which rely on quantum-vulnerable public-key signature…
Weaker Assumptions for Asymmetric Trust
Ignacio Amores-Sesar, Christian Cachin, Simon Holmgaard Kamp +1
In distributed systems with asymmetric trust, each participant is free to make its own trust assumptions about others, captured by an asymmetric quorum system. This contrasts with…
DAG-based Consensus with Asymmetric Trust [Extended Version]
Ignacio Amores-Sesar, Christian Cachin, Juan Villacis +1
In protocols with asymmetric trust, each participant is free to make its own individual trust assumptions about others, captured by an asymmetric quorum system. This contrasts with…
Deanonymizing Ethereum Validators: The P2P Network Has a Privacy Issue
Lioba Heimbach, Yann Vonlanthen, Juan Villacis +2
Many blockchain networks aim to preserve the anonymity of validators in the peer-to-peer (P2P) network, ensuring that no adversary can link a validator's identifier to the IP addre…