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DOI: 10.4230/LIPIcs.OPODIS.2023.12

Eating Sandwiches: Modular and Lightweight Elimination of Transaction Reordering Attacks

Authors: Orestis Alpos, Ignacio Amores-Sesar, Christian Cachin, and Michelle Yeo

Published in: LIPIcs, Volume 286, 27th International Conference on Principles of Distributed Systems (OPODIS 2023)

Abstract

Traditional blockchains grant the miner of a block full control not only over which transactions but also their order. This constitutes a major flaw discovered with the introduction of decentralized finance and allows miners to perform MEV attacks. In this paper, we address the issue of sandwich attacks by providing a construction that takes as input a blockchain protocol and outputs a new blockchain protocol with the same security but in which sandwich attacks are not profitable. Furthermore, our protocol is fully decentralized with no trusted third parties or heavy cryptography primitives and carries a linear increase in latency and minimum computation overhead.

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Orestis Alpos, Ignacio Amores-Sesar, Christian Cachin, and Michelle Yeo. Eating Sandwiches: Modular and Lightweight Elimination of Transaction Reordering Attacks. In 27th International Conference on Principles of Distributed Systems (OPODIS 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 286, pp. 12:1-12:22, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@InProceedings{alpos_et_al:LIPIcs.OPODIS.2023.12,
  author =	{Alpos, Orestis and Amores-Sesar, Ignacio and Cachin, Christian and Yeo, Michelle},
  title =	{{Eating Sandwiches: Modular and Lightweight Elimination of Transaction Reordering Attacks}},
  booktitle =	{27th International Conference on Principles of Distributed Systems (OPODIS 2023)},
  pages =	{12:1--12:22},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-308-9},
  ISSN =	{1868-8969},
  year =	{2024},
  volume =	{286},
  editor =	{Bessani, Alysson and D\'{e}fago, Xavier and Nakamura, Junya and Wada, Koichi and Yamauchi, Yukiko},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2023.12},
  URN =		{urn:nbn:de:0030-drops-195029},
  doi =		{10.4230/LIPIcs.OPODIS.2023.12},
  annote =	{Keywords: Consensus, MEV, Byzantine behavior, Rational behavior}
}

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Eating Sandwiches: Modular and Lightweight Elimination of Transaction Reordering Attacks

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