3 Search Results for "Hartenstein, Hannes"

Document
Brief Announcement
DOI: 10.4230/LIPIcs.DISC.2023.43
Brief Announcement: Let It TEE: Asynchronous Byzantine Atomic Broadcast with n ≥ 2f+1

Authors: Marc Leinweber and Hannes Hartenstein

Published in: LIPIcs, Volume 281, 37th International Symposium on Distributed Computing (DISC 2023)

Abstract
Asynchronous Byzantine Atomic Broadcast (ABAB) promises simplicity in implementation as well as increased performance and robustness in comparison to partially synchronous approaches. We adapt the recently proposed DAG-Rider approach to achieve ABAB with n ≥ 2f+1 processes, of which f are faulty, with only a constant increase in message size. We leverage a small Trusted Execution Environment (TEE) that provides a unique sequential identifier generator (USIG) to implement Reliable Broadcast with n > f processes and show that the quorum-critical proofs still hold when adapting the quorum size to ⌊ n/2 ⌋ + 1. This first USIG-based ABAB preserves the simplicity of DAG-Rider and serves as starting point for further research on TEE-based ABAB.
Cite as

Marc Leinweber and Hannes Hartenstein. Brief Announcement: Let It TEE: Asynchronous Byzantine Atomic Broadcast with n ≥ 2f+1. In 37th International Symposium on Distributed Computing (DISC 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 281, pp. 43:1-43:7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{leinweber_et_al:LIPIcs.DISC.2023.43,
  author =	{Leinweber, Marc and Hartenstein, Hannes},
  title =	{{Brief Announcement: Let It TEE: Asynchronous Byzantine Atomic Broadcast with n ≥ 2f+1}},
  booktitle =	{37th International Symposium on Distributed Computing (DISC 2023)},
  pages =	{43:1--43:7},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-301-0},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{281},
  editor =	{Oshman, Rotem},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2023.43},
  URN =		{urn:nbn:de:0030-drops-191694},
  doi =		{10.4230/LIPIcs.DISC.2023.43},
  annote =	{Keywords: Byzantine Fault Tolerance, Trusted Execution Environments, Asynchrony}
}
Document
DOI: 10.4230/DagRep.3.9.190
Inter-Vehicular Communication -- Quo Vadis (Dagstuhl Seminar 13392)

Authors: Onur Altintas, Falko Dressler, Hannes Hartenstein, and Ozan K. Tonguz

Published in: Dagstuhl Reports, Volume 3, Issue 9 (2014)

Abstract
"Inter-Vehicular Communication -- Quo Vadis?". With this question in mind, leading experts in the field of vehicular networking met in Dagstuhl to discuss the current state of the art and, most importantly, the open challenges in R&D from both an scientific and an industry point of view. After more than a decade of research on vehicular networks, the experts very seriously asked the question whether all of the initial research issues had been solved so far. It turned out that the perspective changed in the last few years, mainly thanks to the ongoing field operational tests in Europe and the U.S. The results point to new research directions and new challenges that need to be solved for a second generation of vehicular networking applications and protocols. In four working groups, the experts studied these new challenges and derived recommendations that are also very helpful for the respective funding organizations.
Cite as

Onur Altintas, Falko Dressler, Hannes Hartenstein, and Ozan K. Tonguz. Inter-Vehicular Communication -- Quo Vadis (Dagstuhl Seminar 13392). In Dagstuhl Reports, Volume 3, Issue 9, pp. 190-213, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)

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@Article{altintas_et_al:DagRep.3.9.190,
  author =	{Altintas, Onur and Dressler, Falko and Hartenstein, Hannes and Tonguz, Ozan K.},
  title =	{{Inter-Vehicular Communication -- Quo Vadis (Dagstuhl Seminar 13392)}},
  pages =	{190--213},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2014},
  volume =	{3},
  number =	{9},
  editor =	{Altintas, Onur and Dressler, Falko and Hartenstein, Hannes and Tonguz, Ozan K.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagRep.3.9.190},
  URN =		{urn:nbn:de:0030-drops-44227},
  doi =		{10.4230/DagRep.3.9.190},
  annote =	{Keywords: Vehicular Networking, Inter-Vehicle Communication, Intelligent Transportation Systems}
}
Document
DOI: 10.4230/DagSemProc.10402.3
10402 Report – Working Group on Fundamental Limits and Opportunities

Authors: Hannes Hartenstein, Geert Heijenk, Martin Mauve, Björn Scheuermann, and Lars Wolf

Published in: Dagstuhl Seminar Proceedings, Volume 10402, Inter-Vehicular Communication (2011)

Abstract
This working group investigated first steps towards finding a theoretical foundation for inter-vehicle communication. The main outcome is a sketch of a roadmap for future work in this direction.
Cite as

Hannes Hartenstein, Geert Heijenk, Martin Mauve, Björn Scheuermann, and Lars Wolf. 10402 Report – Working Group on Fundamental Limits and Opportunities. In Inter-Vehicular Communication. Dagstuhl Seminar Proceedings, Volume 10402, pp. 1-3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@InProceedings{hartenstein_et_al:DagSemProc.10402.3,
  author =	{Hartenstein, Hannes and Heijenk, Geert and Mauve, Martin and Scheuermann, Bj\"{o}rn and Wolf, Lars},
  title =	{{10402 Report – Working Group on Fundamental Limits and Opportunities}},
  booktitle =	{Inter-Vehicular Communication},
  pages =	{1--3},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2011},
  volume =	{10402},
  editor =	{Falko Dressler and Frank Kargl and J\"{o}rg Ott and Ozan K. Tonguz and Lars Wischhof},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.10402.3},
  URN =		{urn:nbn:de:0030-drops-29266},
  doi =		{10.4230/DagSemProc.10402.3},
  annote =	{Keywords: Inter-Vehicle Communication, Car-to-X Communication, Fundamental Limits}
}
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