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DOI: 10.4230/LIPIcs.DISC.2025.8

Auditable Shared Objects: From Registers to Synchronization Primitives

Authors: Hagit Attiya, Antonio Fernández Anta, Alessia Milani, Alexandre Rapetti, and Corentin Travers

Published in: LIPIcs, Volume 356, 39th International Symposium on Distributed Computing (DISC 2025)

Abstract

Auditability allows to track operations performed on a shared object, recording who accessed which information. This gives data owners more control on their data. Initially studied in the context of single-writer registers, this work extends the notion of auditability to other shared objects, and studies their properties. We start by moving from single-writer to multi-writer registers, and provide an implementation of an auditable n-writer m-reader read / write register, with O(n+m) step complexity. This implementation uses (m+n)-sliding registers, which have consensus number m+n. We show that this consensus number is necessary. The implementation extends naturally to support an auditable load-linked / store-conditional (LL/SC) shared object. LL/SC is a primitive that supports efficient implementation of many shared objects. Finally, we relate auditable registers to other access control objects, by implementing an anti-flickering deny list from auditable registers.

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Hagit Attiya, Antonio Fernández Anta, Alessia Milani, Alexandre Rapetti, and Corentin Travers. Auditable Shared Objects: From Registers to Synchronization Primitives. In 39th International Symposium on Distributed Computing (DISC 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 356, pp. 8:1-8:22, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{attiya_et_al:LIPIcs.DISC.2025.8,
  author =	{Attiya, Hagit and Anta, Antonio Fern\'{a}ndez and Milani, Alessia and Rapetti, Alexandre and Travers, Corentin},
  title =	{{Auditable Shared Objects: From Registers to Synchronization Primitives}},
  booktitle =	{39th International Symposium on Distributed Computing (DISC 2025)},
  pages =	{8:1--8:22},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-402-4},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{356},
  editor =	{Kowalski, Dariusz R.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2025.8},
  URN =		{urn:nbn:de:0030-drops-248253},
  doi =		{10.4230/LIPIcs.DISC.2025.8},
  annote =	{Keywords: Auditability, Wait-free implementation, Synchronization power, Distributed objects, Shared memory, LL/SC, Deny List}
}

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Brief Announcement

DOI: 10.4230/LIPIcs.DISC.2019.40

Brief Announcement: Implementing Byzantine Tolerant Distributed Ledger Objects

Authors: Vicent Cholvi, Antonio Fernández Anta, Chryssis Georgiou, and Nicolas Nicolaou

Published in: LIPIcs, Volume 146, 33rd International Symposium on Distributed Computing (DISC 2019)

Abstract

This work provides a proper formalization for Distributed Ledger Objects (as first defined in [Antonio Fernández Anta et al., 2018]), when processes may be Byzantine. The formal definitions are accompanied by algorithms to implement Byzantine Distributed Ledgers by utilizing a Byzantine Atomic Broadcast service.

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Vicent Cholvi, Antonio Fernández Anta, Chryssis Georgiou, and Nicolas Nicolaou. Brief Announcement: Implementing Byzantine Tolerant Distributed Ledger Objects. In 33rd International Symposium on Distributed Computing (DISC 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 146, pp. 40:1-40:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{cholvi_et_al:LIPIcs.DISC.2019.40,
  author =	{Cholvi, Vicent and Anta, Antonio Fern\'{a}ndez and Georgiou, Chryssis and Nicolaou, Nicolas},
  title =	{{Brief Announcement: Implementing Byzantine Tolerant Distributed Ledger Objects}},
  booktitle =	{33rd International Symposium on Distributed Computing (DISC 2019)},
  pages =	{40:1--40:3},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-126-9},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{146},
  editor =	{Suomela, Jukka},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2019.40},
  URN =		{urn:nbn:de:0030-drops-113476},
  doi =		{10.4230/LIPIcs.DISC.2019.40},
  annote =	{Keywords: Distributed Ledger Object, Byzantine Faults}
}

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Documents authored by Anta, Antonio Fernández

Auditable Shared Objects: From Registers to Synchronization Primitives

Abstract

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Brief Announcement: Implementing Byzantine Tolerant Distributed Ledger Objects

Abstract

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