6 papers
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…
Prefix Consensus For Censorship Resistant BFT
Zhuolun Xiang, Andrei Tonkikh, Alexander Spiegelman
Despite broad adoption of BFT consensus in blockchains, censorship resistance remains weak: existing designs offer limited inclusion guarantees and allow leaders to exclude transac…
The Latency Price of Threshold Cryptosystem in Blockchains
Zhuolun Xiang, Sourav Das, Zekun Li +2
Threshold cryptography is essential for many blockchain protocols. For example, many protocols rely on threshold common coin to implement asynchronous consensus, leader elections,…
Raptr: Prefix Consensus for Robust High-Performance BFT
Andrei Tonkikh, Balaji Arun, Zhuolun Xiang +2
In this paper, we present Raptr--a Byzantine fault-tolerant state machine replication (BFT SMR) protocol that combines strong robustness with high throughput, while attaining near-…
Zaptos: Towards Optimal Blockchain Latency
Zhuolun Xiang, Zekun Li, Balaji Arun +2
End-to-end blockchain latency has become a critical topic of interest in both academia and industry. However, while modern blockchain systems process transactions through multiple…
Deferred Objects to Enhance Smart Contract Programming with Optimistic Parallel Execution
George Mitenkov, Igor Kabiljo, Zekun Li +6
One of the main bottlenecks of blockchains is smart contract execution. To increase throughput, modern blockchains try to execute transactions in parallel. Unfortunately, however,…