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Documents authored by Felber, Pascal

Document
DOI: 10.4230/LIPIcs.OPODIS.2023.23
A Holistic Approach for Trustworthy Distributed Systems with WebAssembly and TEEs

Authors: Jämes Ménétrey, Aeneas Grüter, Peterson Yuhala, Julius Oeftiger, Pascal Felber, Marcelo Pasin, and Valerio Schiavoni

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

Abstract
Publish/subscribe systems play a key role in enabling communication between numerous devices in distributed and large-scale architectures. While widely adopted, securing such systems often trades portability for additional integrity and attestation guarantees. Trusted Execution Environments (TEEs) offer a potential solution with enclaves to enhance security and trust. However, application development for TEEs is complex, and many existing solutions are tied to specific TEE architectures, limiting adaptability. Current communication protocols also inadequately manage attestation proofs or expose essential attestation information. This paper introduces a novel approach using WebAssembly to address these issues, a key enabling technology nowadays capturing academia and industry attention. We present the design of a portable and fully attested publish/subscribe middleware system as a holistic approach for trustworthy and distributed communication between various systems. Based on this proposal, we have implemented and evaluated in-depth a fully-fledged publish/subscribe broker running within Intel SGX, compiled in WebAssembly, and built on top of industry-battled frameworks and standards, i.e., MQTT and TLS protocols. Our extended TLS protocol preserves the privacy of attestation information, among other benefits. Our experimental results showcase most overheads, revealing a 1.55× decrease in message throughput when using a trusted broker. We open-source the contributions of this work to the research community to facilitate experimental reproducibility.
Cite as

Jämes Ménétrey, Aeneas Grüter, Peterson Yuhala, Julius Oeftiger, Pascal Felber, Marcelo Pasin, and Valerio Schiavoni. A Holistic Approach for Trustworthy Distributed Systems with WebAssembly and TEEs. In 27th International Conference on Principles of Distributed Systems (OPODIS 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 286, pp. 23:1-23:23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@InProceedings{menetrey_et_al:LIPIcs.OPODIS.2023.23,
  author =	{M\'{e}n\'{e}trey, J\"{a}mes and Gr\"{u}ter, Aeneas and Yuhala, Peterson and Oeftiger, Julius and Felber, Pascal and Pasin, Marcelo and Schiavoni, Valerio},
  title =	{{A Holistic Approach for Trustworthy Distributed Systems with WebAssembly and TEEs}},
  booktitle =	{27th International Conference on Principles of Distributed Systems (OPODIS 2023)},
  pages =	{23:1--23:23},
  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.2023.23},
  URN =		{urn:nbn:de:0030-drops-195132},
  doi =		{10.4230/LIPIcs.OPODIS.2023.23},
  annote =	{Keywords: Publish/Subscribe, WebAssembly, Attestation, TLS, Trusted Execution Environment, Cloud-Edge Continuum}
}
Document
Invited Talk
DOI: 10.4230/LIPIcs.OPODIS.2020.1
Big Data Processing: Security and Scalability Challenges (Invited Talk)

Authors: Pascal Felber

Published in: LIPIcs, Volume 184, 24th International Conference on Principles of Distributed Systems (OPODIS 2020)

Abstract
The processing of large amonts of data requires significant computing power and scalable architectures. This trend makes the use of Cloud computing and off-premises data centres particularly attractive, but exposes companies to the risk of data theft. This is a key challenge toward exploiting public Clouds, as data represents for many companies their most valuable asset. In this talk, we will discuss about mechanisms to ensure secure and privacy-preserving Big Data processing on computing architectures supporting horizontal and vertical scalability.
Cite as

Pascal Felber. Big Data Processing: Security and Scalability Challenges (Invited Talk). In 24th International Conference on Principles of Distributed Systems (OPODIS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 184, p. 1:1, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{felber:LIPIcs.OPODIS.2020.1,
  author =	{Felber, Pascal},
  title =	{{Big Data Processing: Security and Scalability Challenges}},
  booktitle =	{24th International Conference on Principles of Distributed Systems (OPODIS 2020)},
  pages =	{1:1--1:1},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-176-4},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{184},
  editor =	{Bramas, Quentin and Oshman, Rotem and Romano, Paolo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2020.1},
  URN =		{urn:nbn:de:0030-drops-134863},
  doi =		{10.4230/LIPIcs.OPODIS.2020.1},
  annote =	{Keywords: Big Data}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.OPODIS.2019
LIPIcs, Vol. 153, OPODIS 2019, Complete Volume

Authors: Pascal Felber, Roy Friedman, Seth Gilbert, and Avery Miller

Published in: LIPIcs, Volume 153, 23rd International Conference on Principles of Distributed Systems (OPODIS 2019)

Abstract
LIPIcs, Vol. 153, OPODIS 2019, Complete Volume
Cite as

23rd International Conference on Principles of Distributed Systems (OPODIS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 153, pp. 1-564, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@Proceedings{felber_et_al:LIPIcs.OPODIS.2019,
  title =	{{LIPIcs, Vol. 153, OPODIS 2019, Complete Volume}},
  booktitle =	{23rd International Conference on Principles of Distributed Systems (OPODIS 2019)},
  pages =	{1--564},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-133-7},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{153},
  editor =	{Felber, Pascal and Friedman, Roy and Gilbert, Seth and Miller, Avery},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2019},
  URN =		{urn:nbn:de:0030-drops-119510},
  doi =		{10.4230/LIPIcs.OPODIS.2019},
  annote =	{Keywords: LIPIcs, Vol. 153, OPODIS 2019, Complete Volume}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.OPODIS.2019.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Pascal Felber, Roy Friedman, Seth Gilbert, and Avery Miller

Published in: LIPIcs, Volume 153, 23rd International Conference on Principles of Distributed Systems (OPODIS 2019)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

23rd International Conference on Principles of Distributed Systems (OPODIS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 153, pp. 0:i-0:xxii, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{felber_et_al:LIPIcs.OPODIS.2019.0,
  author =	{Felber, Pascal and Friedman, Roy and Gilbert, Seth and Miller, Avery},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{23rd International Conference on Principles of Distributed Systems (OPODIS 2019)},
  pages =	{0:i--0:xxii},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-133-7},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{153},
  editor =	{Felber, Pascal and Friedman, Roy and Gilbert, Seth and Miller, Avery},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2019.0},
  URN =		{urn:nbn:de:0030-drops-117869},
  doi =		{10.4230/LIPIcs.OPODIS.2019.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.OPODIS.2017
LIPIcs, Volume 95, OPODIS'17, Complete Volume

Authors: James Aspnes, Alysson Bessani, Pascal Felber, and João Leitão

Published in: LIPIcs, Volume 95, 21st International Conference on Principles of Distributed Systems (OPODIS 2017)

Abstract
LIPIcs, Volume 95, OPODIS'17, Complete Volume
Cite as

21st International Conference on Principles of Distributed Systems (OPODIS 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 95, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@Proceedings{aspnes_et_al:LIPIcs.OPODIS.2017,
  title =	{{LIPIcs, Volume 95, OPODIS'17, Complete Volume}},
  booktitle =	{21st International Conference on Principles of Distributed Systems (OPODIS 2017)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-061-3},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{95},
  editor =	{Aspnes, James and Bessani, Alysson and Felber, Pascal and Leit\~{a}o, Jo\~{a}o},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2017},
  URN =		{urn:nbn:de:0030-drops-86786},
  doi =		{10.4230/LIPIcs.OPODIS.2017},
  annote =	{Keywords: Distributed Systems, Performance of Systems, Concurrent Programming, Data Structures, Modes of Computation}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.OPODIS.2017.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: James Aspnes, Alysson Bessani, Pascal Felber, and João Leitão

Published in: LIPIcs, Volume 95, 21st International Conference on Principles of Distributed Systems (OPODIS 2017)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

21st International Conference on Principles of Distributed Systems (OPODIS 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 95, pp. 0:i-0:xx, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{aspnes_et_al:LIPIcs.OPODIS.2017.0,
  author =	{Aspnes, James and Bessani, Alysson and Felber, Pascal and Leit\~{a}o, Jo\~{a}o},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{21st International Conference on Principles of Distributed Systems (OPODIS 2017)},
  pages =	{0:i--0:xx},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-061-3},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{95},
  editor =	{Aspnes, James and Bessani, Alysson and Felber, Pascal and Leit\~{a}o, Jo\~{a}o},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2017.0},
  URN =		{urn:nbn:de:0030-drops-86236},
  doi =		{10.4230/LIPIcs.OPODIS.2017.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
DOI: 10.4230/LIPIcs.DISC.2017.28
Extending Hardware Transactional Memory Capacity via Rollback-Only Transactions and Suspend/Resume

Authors: Shady Issa, Pascal Felber, Alexander Matveev, and Paolo Romano

Published in: LIPIcs, Volume 91, 31st International Symposium on Distributed Computing (DISC 2017)

Abstract
Transactional memory (TM) aims at simplifying concurrent programming via the familiar abstraction of atomic transactions. Recently, Intel and IBM have integrated hardware based TM (HTM) implementations in commodity processors, paving the way for the mainstream adoption of the TM paradigm. Yet, existing HTM implementations suffer from a crucial limitation, which hampers the adoption of HTM as a general technique for regulating concurrent access to shared memory: the inability to execute transactions whose working sets exceed the capacity of CPU caches. In this paper we propose P8TM, a novel approach that mitigates this limitation on IBM's POWER8 architecture by leveraging a key combination of techniques: uninstrumented read-only transactions, Rollback Only Transaction-based update transactions, HTM-friendly (software-based) read-set tracking, and self-tuning. P8TM can dynamically switch between different execution modes to best adapt to the nature of the transactions and the experienced abort patterns. In-depth evaluation with several benchmarks indicates that P8TM can achieve striking performance gains in workloads that stress the capacity limitations of HTM, while achieving performance on par with HTM even in unfavourable workloads.
Cite as

Shady Issa, Pascal Felber, Alexander Matveev, and Paolo Romano. Extending Hardware Transactional Memory Capacity via Rollback-Only Transactions and Suspend/Resume. In 31st International Symposium on Distributed Computing (DISC 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 91, pp. 28:1-28:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{issa_et_al:LIPIcs.DISC.2017.28,
  author =	{Issa, Shady and Felber, Pascal and Matveev, Alexander and Romano, Paolo},
  title =	{{Extending Hardware Transactional Memory Capacity via Rollback-Only Transactions and Suspend/Resume}},
  booktitle =	{31st International Symposium on Distributed Computing (DISC 2017)},
  pages =	{28:1--28:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-053-8},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{91},
  editor =	{Richa, Andr\'{e}a},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2017.28},
  URN =		{urn:nbn:de:0030-drops-79811},
  doi =		{10.4230/LIPIcs.DISC.2017.28},
  annote =	{Keywords: hardware transactional memory, self tuning, parallel programming}
}
Document
DOI: 10.4230/DagRep.5.1.1
Concurrent Computing in the Many-core Era (Dagstuhl Seminar 15021)

Authors: Michael Philippsen, Pascal Felber, Michael L. Scott, and J. Eliot B. Moss

Published in: Dagstuhl Reports, Volume 5, Issue 1 (2015)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 15021 "Concurrent computing in the many-core era". This seminar is a successor to Dagstuhl Seminars 08241 "Transactional memory: From implementation to application" and 12161 "Abstractions for scalable multicore computing", respectively held in June 2008 and in April 2012. The current seminar built on the previous seminars by notably (1) broadening the scope to concurrency beyond transactional memory and shared-memory multicores abstractions, (2) focusing on the new challenges and potential uses of emerging hardware support for synchronization extensions, and (3) considering the increasing complexity resulting from the explosion in heterogeneity.
Cite as

Michael Philippsen, Pascal Felber, Michael L. Scott, and J. Eliot B. Moss. Concurrent Computing in the Many-core Era (Dagstuhl Seminar 15021). In Dagstuhl Reports, Volume 5, Issue 1, pp. 1-56, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@Article{philippsen_et_al:DagRep.5.1.1,
  author =	{Philippsen, Michael and Felber, Pascal and Scott, Michael L. and Moss, J. Eliot B.},
  title =	{{Concurrent Computing in the Many-core Era (Dagstuhl Seminar 15021)}},
  pages =	{1--56},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2015},
  volume =	{5},
  number =	{1},
  editor =	{Philippsen, Michael and Felber, Pascal and Scott, Michael L. and Moss, J. Eliot B.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.5.1.1},
  URN =		{urn:nbn:de:0030-drops-50105},
  doi =		{10.4230/DagRep.5.1.1},
  annote =	{Keywords: Multi-/many-core processors, Concurrent Programming, Synchronization, Transactional Memory, Programming Languages, Compilation}
}
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