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Documents authored by Garg, Deepak

Document
DOI: 10.4230/DagRep.11.10.173
Secure Compilation (Dagstuhl Seminar 21481)

Authors: David Chisnall, Deepak Garg, Catalin Hritcu, and Mathias Payer

Published in: Dagstuhl Reports, Volume 11, Issue 10 (2022)

Abstract
Secure compilation is an emerging field that puts together advances in security, programming languages, compilers, verification, systems, and hardware architectures in order to devise more secure compilation chains that eliminate many of today’s security vulnerabilities and that allow sound reasoning about security properties in the source language. For a concrete example, all modern languages provide a notion of structured control flow and an invoked procedure is expected to return to the right place. However, today’s compilation chains (compilers, linkers, loaders, runtime systems, hardware) cannot efficiently enforce this abstraction against linked low-level code, which can call and return to arbitrary instructions or smash the stack, blatantly violating the high-level abstraction. Other problems arise because today’s languages fail to specify security policies, such as data confidentiality, and the compilation chains thus fail to enforce them, especially against powerful side-channel attacks. The emerging secure compilation community aims to address such problems by identifying precise security goals and attacker models, designing more secure languages, devising efficient enforcement and mitigation mechanisms, and developing effective verification techniques for secure compilation chains. This seminar strived to take a broad and inclusive view of secure compilation and to provide a forum for discussion on the topic. The goal was to identify interesting research directions and open challenges by bringing together people working on building secure compilation chains, on designing security enforcement and attack-mitigation mechanisms in both software and hardware, and on developing formal verification techniques for secure compilation.
Cite as

David Chisnall, Deepak Garg, Catalin Hritcu, and Mathias Payer. Secure Compilation (Dagstuhl Seminar 21481). In Dagstuhl Reports, Volume 11, Issue 10, pp. 173-204, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@Article{chisnall_et_al:DagRep.11.10.173,
  author =	{Chisnall, David and Garg, Deepak and Hritcu, Catalin and Payer, Mathias},
  title =	{{Secure Compilation (Dagstuhl Seminar 21481)}},
  pages =	{173--204},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2022},
  volume =	{11},
  number =	{10},
  editor =	{Chisnall, David and Garg, Deepak and Hritcu, Catalin and Payer, Mathias},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.11.10.173},
  URN =		{urn:nbn:de:0030-drops-159332},
  doi =		{10.4230/DagRep.11.10.173},
  annote =	{Keywords: secure compilation, low-level attacks, source-level reasoning, attacker models, full abstraction, hyperproperties, enforcement mechanisms, compartmentalization, security architectures, side-channels}
}
Document
DOI: 10.4230/DagRep.8.5.1
Secure Compilation (Dagstuhl Seminar 18201)

Authors: Amal Ahmed, Deepak Garg, Catalin Hritcu, and Frank Piessens

Published in: Dagstuhl Reports, Volume 8, Issue 5 (2019)

Abstract
Secure compilation is an emerging field that puts together advances in security, programming languages, verification, systems, and hardware architectures in order to devise secure compilation chains that eliminate many of today's vulnerabilities. Secure compilation aims to protect a source language's abstractions in compiled code, even against low-level attacks. For a concrete example, all modern languages provide a notion of structured control flow and an invoked procedure is expected to return to the right place. However, today's compilation chains (compilers, linkers, loaders, runtime systems, hardware) cannot efficiently enforce this abstraction: linked low-level code can call and return to arbitrary instructions or smash the stack, blatantly violating the high-level abstraction. The emerging secure compilation community aims to address such problems by devising formal security criteria, efficient enforcement mechanisms, and effective proof techniques. This seminar strived to take a broad and inclusive view of secure compilation and to provide a forum for discussion on the topic. The goal was to identify interesting research directions and open challenges by bringing together people working on building secure compilation chains, on developing proof techniques and verification tools, and on designing security mechanisms.
Cite as

Amal Ahmed, Deepak Garg, Catalin Hritcu, and Frank Piessens. Secure Compilation (Dagstuhl Seminar 18201). In Dagstuhl Reports, Volume 8, Issue 5, pp. 1-30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@Article{ahmed_et_al:DagRep.8.5.1,
  author =	{Ahmed, Amal and Garg, Deepak and Hritcu, Catalin and Piessens, Frank},
  title =	{{Secure Compilation (Dagstuhl Seminar 18201)}},
  pages =	{1--30},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2018},
  volume =	{8},
  number =	{5},
  editor =	{Ahmed, Amal and Garg, Deepak and Hritcu, Catalin and Piessens, Frank},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.8.5.1},
  URN =		{urn:nbn:de:0030-drops-98911},
  doi =		{10.4230/DagRep.8.5.1},
  annote =	{Keywords: secure compilation, low-level attacks, source-level reasoning, attacker models, full abstraction, hyperproperties, enforcement mechanisms, compartmentalization, security architectures, side-channels}
}
Document
DOI: 10.4230/LIPIcs.CONCUR.2016.18
Causally Consistent Dynamic Slicing

Authors: Roly Perera, Deepak Garg, and James Cheney

Published in: LIPIcs, Volume 59, 27th International Conference on Concurrency Theory (CONCUR 2016)

Abstract
We offer a lattice-theoretic account of the problem of dynamic slicing for pi-calculus, building on prior work in the sequential setting. For any particular run of a concurrent program, we exhibit a Galois connection relating forward and backward slices of the initial and terminal configurations. We prove that, up to lattice isomorphism, the same Galois connection arises for any causally equivalent execution, allowing an efficient concurrent implementation of slicing via a standard interleaving semantics. Our approach has been formalised in the dependently-typed programming language Agda.
Cite as

Roly Perera, Deepak Garg, and James Cheney. Causally Consistent Dynamic Slicing. In 27th International Conference on Concurrency Theory (CONCUR 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 59, pp. 18:1-18:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@InProceedings{perera_et_al:LIPIcs.CONCUR.2016.18,
  author =	{Perera, Roly and Garg, Deepak and Cheney, James},
  title =	{{Causally Consistent Dynamic Slicing}},
  booktitle =	{27th International Conference on Concurrency Theory (CONCUR 2016)},
  pages =	{18:1--18:15},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-017-0},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{59},
  editor =	{Desharnais, Jos\'{e}e and Jagadeesan, Radha},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2016.18},
  URN =		{urn:nbn:de:0030-drops-61584},
  doi =		{10.4230/LIPIcs.CONCUR.2016.18},
  annote =	{Keywords: pi-calculus; dynamic slicing; causal equivalence; Galois connection}
}
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