Loi Luu

Publications
Influence

Loi Luu, Duc-Hiep Chu, Hrishi Olickel, P. Saxena, Aquinas Hobor
Computer Science
IACR Cryptol. ePrint Arch.
24 October 2016

We investigate the security of running smart contracts based on Ethereum in an open distributed network like those of cryptocurrencies. Expand

A Secure Sharding Protocol For Open Blockchains

Loi Luu, V. Narayanan, C. Zheng, Kunal Baweja, Seth Gilbert, P. Saxena
Computer Science
CCS
24 October 2016

We propose a new distributed agreement protocol for permission-less blockchains called ELASTICO, which scales almost linearly with available computation. Expand

Demystifying Incentives in the Consensus Computer

Loi Luu, Jason Teutsch, Raghav Kulkarni, P. Saxena
Computer Science, Business
CCS
12 October 2015

We show that when a script execution requires nontrivial computation effort, practical attacks exist which either waste miners' computational resources or lead miners to accept incorrect script results. Expand

On Power Splitting Games in Distributed Computation: The Case of Bitcoin Pooled Mining

Loi Luu, R. Saha, Inian Parameshwaran, P. Saxena, Aquinas Hobor
Computer Science
IEEE 28th Computer Security Foundations Symposium
13 July 2015

We show that existing pool reward sharing protocols are insecure in our game-theoretic analysis under an attack strategy called the "block withholding attack". Expand

A model counter for constraints over unbounded strings

Loi Luu, Shweta Shinde, P. Saxena, B. Demsky
Computer Science
PLDI
9 June 2014

We present a new approach to model counting for structured data types, specifically strings in this work. Expand

SmartPool: Practical Decentralized Pooled Mining

Loi Luu, Yaron Velner, Jason Teutsch, P. Saxena
Computer Science
USENIX Security Symposium
16 August 2017

SMARTPOOL gives transaction selection control back to miners while yielding low-variance payouts. Expand

FlyClient: Super-Light Clients for Cryptocurrencies

Benedikt Bünz, Lucianna Kiffer, Loi Luu, M. Zamani
Computer Science
IEEE Symposium on Security and Privacy (SP)
1 May 2020

We introduce FlyClient, a novel transaction verification light client for chains of variable difficulty. Expand

Randomized View Reconciliation in Permissionless Distributed Systems

Ruomu Hou, Irvan Jahja, Loi Luu, P. Saxena, Haifeng Yu
Computer Science
IEEE INFOCOM - IEEE Conference on Computer…
16 April 2018

We propose a novel view reconciliation protocol with a time complexity of only $\Theta(\frac{\ln N}{\ln\ln N})$. Expand

SCP: A Computationally-Scalable Byzantine Consensus Protocol For Blockchains

Loi Luu, V. Narayanan, Kunal Baweja, C. Zheng, Seth Gilbert, P. Saxena
Computer Science
IACR Cryptol. ePrint Arch.
2015

In this paper, we design a new blockchain Byzantine consensus protocol SCP where the throughput scales linearly with the computation: the more computing power available, the more blocks selected per unit time. Expand

Obscuro: A Bitcoin Mixer using Trusted Execution Environments

Muoi Tran, Loi Luu, M. S. Kang, I. Bentov, P. Saxena
Computer Science, Geology
IACR Cryptol. ePrint Arch.
3 December 2018

We present Obscuro, a highly efficient and secure Bitcoin mixer that utilizes trusted execution environments (TEEs) and we demonstrate its effectiveness in Bitcoin Testnet. Expand

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