50 citations · 66 across the 11 of their papers we have counts for
11 papers
Crystal: Enhancing Blockchain Mining Transparency with Quorum Certificate
Jianyu Niu, Fangyu Gai, Runchao Han +3
Researchers have discovered a series of theoretical attacks against Bitcoin's Nakamoto consensus; the most damaging ones are selfish mining, double-spending, and consistency delay…
Phalanx: A Practical Byzantine Ordered Consensus Protocol
Guangren Wang, Liang Cai, Fangyu Gai +1
Byzantine fault tolerance (BFT) consensus is a fundamental primitive for distributed computation. However, BFT protocols suffer from the ordering manipulation, in which an adversar…
Bitcoin-Enhanced Proof-of-Stake Security: Possibilities and Impossibilities
Ertem Nusret Tas, David Tse, Fangyu Gai +3
Bitcoin is the most secure blockchain in the world, supported by the immense hash power of its Proof-of-Work miners. Proof-of-Stake chains are energy-efficient, have fast finality…
Human Values Violations in Stack Overflow: An Exploratory Study
Sara Krishtul, Mojtaba Shahin, Humphrey O. Obie +4
A growing number of software-intensive systems are being accused of violating or ignoring human values (e.g., privacy, inclusion, and social responsibility), and this poses great d…
Scaling Blockchain Consensus via a Robust Shared Mempool
Fangyu Gai, Jianyu Niu, Ivan Beschastnikh +2
There is a resurgence of interest in Byzantine fault-tolerant (BFT) systems due to blockchains. However, leader-based BFT consensus protocols used by permissioned blockchains have…
On the Performance of Pipelined HotStuff
Jianyu Niu, Fangyu Gai, Mohammad M. Jalalzai +1
HotStuff is a state-of-the-art Byzantine fault-tolerant consensus protocol. It can be pipelined to build large-scale blockchains. One of its variants called LibraBFT is adopted in…
Dissecting the Performance of Chained-BFT
Fangyu Gai, Ali Farahbakhsh, Jianyu Niu +3
Permissioned blockchains employ Byzantine fault-tolerant (BFT) state machine replication (SMR) to reach agreement on an ever-growing, linearly ordered log of transactions. A new pa…
EBFT: Simplifying BFT Consensus Through Egalitarianism
Jianyu Niu, Runchao Han, Shengqi Liu +4
We present Egalitarian BFT (EBFT), a simple and high-performance framework of BFT consensus protocols for decentralized systems like blockchains. The key innovation in EBFT is egal…
Fast-HotStuff: A Fast and Resilient HotStuff Protocol
Mohammad M. Jalalzai, Jianyu Niu, Chen Feng +1
The HotStuff protocol is a breakthrough in Byzantine Fault Tolerant (BFT) consensus that enjoys both responsiveness and linear view change. It creatively adds an additional round t…
Incentive Analysis of Bitcoin-NG, Revisited
Jianyu Niu, Ziyu Wang, Fangyu Gai +1
Bitcoin-NG is among the first blockchain protocols to approach the \emph{near-optimal} throughput by decoupling blockchain operation into two planes: leader election and transactio…
A Secure Consensus Protocol for Sidechains
Fangyu Gai, Cesar Grajales, Jianyu Niu +2
Sidechain technology has been envisioned as a promising solution to accelerate today's public blockchains in terms of scalability and interoperability. By relying on the mainchain…