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Online Payments by Merely Broadcasting Messages

Collins, Daniel ; Guerraoui, Rachid ; Komatovic, Jovan ; Kuznetsov, Petr ; Monti, Matteo ; Pavlovic, Matej ; Pignolet, Yvonne-Anne ; Seredinschi, Dragos-Adrian ; Tonkikh, Andrei ; Xygkis, Athanasios

2020 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), 2020, p.26-38

IEEE

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Título:
Online Payments by Merely Broadcasting Messages
Autor: Collins, Daniel ; Guerraoui, Rachid ; Komatovic, Jovan ; Kuznetsov, Petr ; Monti, Matteo ; Pavlovic, Matej ; Pignolet, Yvonne-Anne ; Seredinschi, Dragos-Adrian ; Tonkikh, Andrei ; Xygkis, Athanasios
Assuntos: asynchronous ; Bitcoin ; Broadcasting ; byzantine reliable broadcast ; consensus ; consensus free ; Contracts ; deterministic ; efficient ; online payments ; Protocols ; Robustness ; Throughput
É parte de: 2020 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), 2020, p.26-38
Descrição: We address the problem of online payments, where users can transfer funds among themselves. We introduce Astro, a system solving this problem efficiently in a decentralized, deterministic, and completely asynchronous manner. Astro builds on the insight that consensus is unnecessary to prevent double-spending. Instead of consensus, Astro relies on a weaker primitive---Byzantine reliable broadcast---enabling a simpler and more efficient implementation than consensus-based payment systems. In terms of efficiency, Astro executes a payment by merely broadcasting a message. The distinguishing feature of Astro is that it can maintain performance robustly, i.e., remain unaffected by a fraction of replicas being compromised or slowed down by an adversary. Our experiments on a public cloud network show that Astro can achieve near-linear scalability in a sharded setup, going from 10K payments/sec (2 shards) to 20K payments/sec (4 shards). In a nutshell, Astro can match VISA-level average payment throughput, and achieves a 5× improvement over a state-of-the-art consensus-based solution, while exhibiting sub-second 95^th percentile latency.
Editor: IEEE
Idioma: Inglês

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Online Payments by Merely Broadcasting Messages

Collins, Daniel ; Guerraoui, Rachid ; Komatovic, Jovan ; Kuznetsov, Petr ; Monti, Matteo ; Pavlovic, Matej ; Pignolet, Yvonne-Anne ; Seredinschi, Dragos-Adrian ; Tonkikh, Andrei ; Xygkis, Athanasios

IEEE

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