---
_id: '9227'
abstract:
- lang: eng
  text: In the multiway cut problem we are given a weighted undirected graph   G=(V,E)  and
    a set   T⊆V  of k terminals. The goal is to find a minimum weight set of edges   E′⊆E  with
    the property that by removing   E′  from G all the terminals become disconnected.
    In this paper we present a simple local search approximation algorithm for the
    multiway cut problem with approximation ratio   2−2k . We present an experimental
    evaluation of the performance of our local search algorithm and show that it greatly
    outperforms the isolation heuristic of Dalhaus et al. and it has similar performance
    as the much more complex algorithms of Calinescu et al., Sharma and Vondrak, and
    Buchbinder et al. which have the currently best known approximation ratios for
    this problem.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Andrew
  full_name: Bloch-Hansen, Andrew
  last_name: Bloch-Hansen
- first_name: Nasim
  full_name: Samei, Nasim
  id: C1531CAE-36E9-11EA-845F-33AA3DDC885E
  last_name: Samei
- first_name: Roberto
  full_name: Solis-Oba, Roberto
  last_name: Solis-Oba
citation:
  ama: 'Bloch-Hansen A, Samei N, Solis-Oba R. Experimental evaluation of a local search
    approximation algorithm for the multiway cut problem. In: <i>Conference on Algorithms
    and Discrete Applied Mathematics</i>. Vol 12601. Springer Nature; 2021:346-358.
    doi:<a href="https://doi.org/10.1007/978-3-030-67899-9_28">10.1007/978-3-030-67899-9_28</a>'
  apa: 'Bloch-Hansen, A., Samei, N., &#38; Solis-Oba, R. (2021). Experimental evaluation
    of a local search approximation algorithm for the multiway cut problem. In <i>Conference
    on Algorithms and Discrete Applied Mathematics</i> (Vol. 12601, pp. 346–358).
    Rupnagar, India: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-67899-9_28">https://doi.org/10.1007/978-3-030-67899-9_28</a>'
  chicago: Bloch-Hansen, Andrew, Nasim Samei, and Roberto Solis-Oba. “Experimental
    Evaluation of a Local Search Approximation Algorithm for the Multiway Cut Problem.”
    In <i>Conference on Algorithms and Discrete Applied Mathematics</i>, 12601:346–58.
    Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-67899-9_28">https://doi.org/10.1007/978-3-030-67899-9_28</a>.
  ieee: A. Bloch-Hansen, N. Samei, and R. Solis-Oba, “Experimental evaluation of a
    local search approximation algorithm for the multiway cut problem,” in <i>Conference
    on Algorithms and Discrete Applied Mathematics</i>, Rupnagar, India, 2021, vol.
    12601, pp. 346–358.
  ista: 'Bloch-Hansen A, Samei N, Solis-Oba R. 2021. Experimental evaluation of a
    local search approximation algorithm for the multiway cut problem. Conference
    on Algorithms and Discrete Applied Mathematics. CALDAM: Conference on Algorithms
    and Discrete Applied Mathematics, LNCS, vol. 12601, 346–358.'
  mla: Bloch-Hansen, Andrew, et al. “Experimental Evaluation of a Local Search Approximation
    Algorithm for the Multiway Cut Problem.” <i>Conference on Algorithms and Discrete
    Applied Mathematics</i>, vol. 12601, Springer Nature, 2021, pp. 346–58, doi:<a
    href="https://doi.org/10.1007/978-3-030-67899-9_28">10.1007/978-3-030-67899-9_28</a>.
  short: A. Bloch-Hansen, N. Samei, R. Solis-Oba, in:, Conference on Algorithms and
    Discrete Applied Mathematics, Springer Nature, 2021, pp. 346–358.
conference:
  end_date: 2021-02-13
  location: Rupnagar, India
  name: 'CALDAM: Conference on Algorithms and Discrete Applied Mathematics'
  start_date: 2021-02-11
date_created: 2021-03-07T23:01:25Z
date_published: 2021-01-28T00:00:00Z
date_updated: 2025-09-10T10:01:54Z
day: '28'
department:
- _id: VlKo
doi: 10.1007/978-3-030-67899-9_28
external_id:
  isi:
  - '001433483100028'
intvolume: '     12601'
isi: 1
language:
- iso: eng
month: '01'
oa_version: None
page: 346-358
publication: Conference on Algorithms and Discrete Applied Mathematics
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030678982'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Experimental evaluation of a local search approximation algorithm for the multiway
  cut problem
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 12601
year: '2021'
...
---
_id: '9296'
abstract:
- lang: eng
  text: ' matching is compatible to two or more labeled point sets of size n with
    labels   {1,…,n}  if its straight-line drawing on each of these point sets is
    crossing-free. We study the maximum number of edges in a matching compatible to
    two or more labeled point sets in general position in the plane. We show that
    for any two labeled convex sets of n points there exists a compatible matching
    with   ⌊2n−−√⌋  edges. More generally, for any   ℓ  labeled point sets we construct
    compatible matchings of size   Ω(n1/ℓ) . As a corresponding upper bound, we use
    probabilistic arguments to show that for any   ℓ  given sets of n points there
    exists a labeling of each set such that the largest compatible matching has   O(n2/(ℓ+1))  edges.
    Finally, we show that   Θ(logn)  copies of any set of n points are necessary and
    sufficient for the existence of a labeling such that any compatible matching consists
    only of a single edge.'
acknowledgement: 'A.A. funded by the Marie Skłodowska-Curie grant agreement No. 754411.
  Z.M. partially funded by Wittgenstein Prize, Austrian Science Fund (FWF), grant
  no. Z 342-N31. I.P., D.P., and B.V. partially supported by FWF within the collaborative
  DACH project Arrangements and Drawings as FWF project I 3340-N35. A.P. supported
  by a Schrödinger fellowship of the FWF: J-3847-N35. J.T. partially supported by
  ERC Start grant no. (279307: Graph Games), FWF grant no. P23499-N23 and S11407-N23
  (RiSE).'
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Oswin
  full_name: Aichholzer, Oswin
  last_name: Aichholzer
- first_name: Alan M
  full_name: Arroyo Guevara, Alan M
  id: 3207FDC6-F248-11E8-B48F-1D18A9856A87
  last_name: Arroyo Guevara
  orcid: 0000-0003-2401-8670
- first_name: Zuzana
  full_name: Masárová, Zuzana
  id: 45CFE238-F248-11E8-B48F-1D18A9856A87
  last_name: Masárová
  orcid: 0000-0002-6660-1322
- first_name: Irene
  full_name: Parada, Irene
  last_name: Parada
- first_name: Daniel
  full_name: Perz, Daniel
  last_name: Perz
- first_name: Alexander
  full_name: Pilz, Alexander
  last_name: Pilz
- first_name: Josef
  full_name: Tkadlec, Josef
  id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87
  last_name: Tkadlec
  orcid: 0000-0002-1097-9684
- first_name: Birgit
  full_name: Vogtenhuber, Birgit
  last_name: Vogtenhuber
citation:
  ama: 'Aichholzer O, Arroyo Guevara AM, Masárová Z, et al. On compatible matchings.
    In: <i>15th International Conference on Algorithms and Computation</i>. Vol 12635.
    Springer Nature; 2021:221-233. doi:<a href="https://doi.org/10.1007/978-3-030-68211-8_18">10.1007/978-3-030-68211-8_18</a>'
  apa: 'Aichholzer, O., Arroyo Guevara, A. M., Masárová, Z., Parada, I., Perz, D.,
    Pilz, A., … Vogtenhuber, B. (2021). On compatible matchings. In <i>15th International
    Conference on Algorithms and Computation</i> (Vol. 12635, pp. 221–233). Yangon,
    Myanmar: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-68211-8_18">https://doi.org/10.1007/978-3-030-68211-8_18</a>'
  chicago: Aichholzer, Oswin, Alan M Arroyo Guevara, Zuzana Masárová, Irene Parada,
    Daniel Perz, Alexander Pilz, Josef Tkadlec, and Birgit Vogtenhuber. “On Compatible
    Matchings.” In <i>15th International Conference on Algorithms and Computation</i>,
    12635:221–33. Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-68211-8_18">https://doi.org/10.1007/978-3-030-68211-8_18</a>.
  ieee: O. Aichholzer <i>et al.</i>, “On compatible matchings,” in <i>15th International
    Conference on Algorithms and Computation</i>, Yangon, Myanmar, 2021, vol. 12635,
    pp. 221–233.
  ista: 'Aichholzer O, Arroyo Guevara AM, Masárová Z, Parada I, Perz D, Pilz A, Tkadlec
    J, Vogtenhuber B. 2021. On compatible matchings. 15th International Conference
    on Algorithms and Computation. WALCOM: Algorithms and Computation, LNCS, vol.
    12635, 221–233.'
  mla: Aichholzer, Oswin, et al. “On Compatible Matchings.” <i>15th International
    Conference on Algorithms and Computation</i>, vol. 12635, Springer Nature, 2021,
    pp. 221–33, doi:<a href="https://doi.org/10.1007/978-3-030-68211-8_18">10.1007/978-3-030-68211-8_18</a>.
  short: O. Aichholzer, A.M. Arroyo Guevara, Z. Masárová, I. Parada, D. Perz, A. Pilz,
    J. Tkadlec, B. Vogtenhuber, in:, 15th International Conference on Algorithms and
    Computation, Springer Nature, 2021, pp. 221–233.
conference:
  end_date: 2021-03-02
  location: Yangon, Myanmar
  name: 'WALCOM: Algorithms and Computation'
  start_date: 2021-02-28
date_created: 2021-03-28T22:01:41Z
date_published: 2021-02-16T00:00:00Z
date_updated: 2026-04-16T09:18:21Z
day: '16'
department:
- _id: UlWa
- _id: HeEd
- _id: KrCh
doi: 10.1007/978-3-030-68211-8_18
ec_funded: 1
external_id:
  arxiv:
  - '2101.03928'
  isi:
  - '001435069600018'
intvolume: '     12635'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2101.03928
month: '02'
oa: 1
oa_version: Preprint
page: 221-233
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 268116B8-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00342
  name: Mathematics, Computer Science
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '279307'
  name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2584A770-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P 23499-N23
  name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S11407
  name: Game Theory
publication: 15th International Conference on Algorithms and Computation
publication_identifier:
  eisbn:
  - '9783030682118'
  eissn:
  - 1611-3349
  isbn:
  - '9783030682101'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '11938'
    relation: later_version
    status: public
scopus_import: '1'
status: public
title: On compatible matchings
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12635
year: '2021'
...
---
_id: '9466'
abstract:
- lang: eng
  text: In this work, we apply the dynamical systems analysis of Hanrot et al. (CRYPTO’11)
    to a class of lattice block reduction algorithms that includes (natural variants
    of) slide reduction and block-Rankin reduction. This implies sharper bounds on
    the polynomial running times (in the query model) for these algorithms and opens
    the door to faster practical variants of slide reduction. We give heuristic arguments
    showing that such variants can indeed speed up slide reduction significantly in
    practice. This is confirmed by experimental evidence, which also shows that our
    variants are competitive with state-of-the-art reduction algorithms.
acknowledgement: 'This work was initiated in discussions with Léo Ducas, when the
  author was visiting the Simons Institute for the Theory of Computation during the
  program “Lattices: Algorithms, Complexity, and Cryptography”. We thank Thomas Espitau
  for pointing out a bug in a proof in an earlier version of this manuscript.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Michael
  full_name: Walter, Michael
  id: 488F98B0-F248-11E8-B48F-1D18A9856A87
  last_name: Walter
  orcid: 0000-0003-3186-2482
citation:
  ama: 'Walter M. The convergence of slide-type reductions. In: <i>Public-Key Cryptography
    – PKC 2021</i>. Vol 12710. Springer Nature; 2021:45-67. doi:<a href="https://doi.org/10.1007/978-3-030-75245-3_3">10.1007/978-3-030-75245-3_3</a>'
  apa: 'Walter, M. (2021). The convergence of slide-type reductions. In <i>Public-Key
    Cryptography – PKC 2021</i> (Vol. 12710, pp. 45–67). Virtual: Springer Nature.
    <a href="https://doi.org/10.1007/978-3-030-75245-3_3">https://doi.org/10.1007/978-3-030-75245-3_3</a>'
  chicago: Walter, Michael. “The Convergence of Slide-Type Reductions.” In <i>Public-Key
    Cryptography – PKC 2021</i>, 12710:45–67. Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-75245-3_3">https://doi.org/10.1007/978-3-030-75245-3_3</a>.
  ieee: M. Walter, “The convergence of slide-type reductions,” in <i>Public-Key Cryptography
    – PKC 2021</i>, Virtual, 2021, vol. 12710, pp. 45–67.
  ista: 'Walter M. 2021. The convergence of slide-type reductions. Public-Key Cryptography
    – PKC 2021. PKC: IACR International Conference on Practice and Theory of Public
    Key Cryptography, LNCS, vol. 12710, 45–67.'
  mla: Walter, Michael. “The Convergence of Slide-Type Reductions.” <i>Public-Key
    Cryptography – PKC 2021</i>, vol. 12710, Springer Nature, 2021, pp. 45–67, doi:<a
    href="https://doi.org/10.1007/978-3-030-75245-3_3">10.1007/978-3-030-75245-3_3</a>.
  short: M. Walter, in:, Public-Key Cryptography – PKC 2021, Springer Nature, 2021,
    pp. 45–67.
conference:
  end_date: 2021-05-13
  location: Virtual
  name: 'PKC: IACR International Conference on Practice and Theory of Public Key Cryptography'
  start_date: 2021-05-10
corr_author: '1'
date_created: 2021-06-06T22:01:29Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2026-04-16T09:25:35Z
day: '01'
ddc:
- '000'
department:
- _id: KrPi
doi: 10.1007/978-3-030-75245-3_3
ec_funded: 1
external_id:
  isi:
  - '001294728500003'
file:
- access_level: open_access
  checksum: 413e564d645ed93d7318672361d9d470
  content_type: application/pdf
  creator: dernst
  date_created: 2022-05-27T09:48:31Z
  date_updated: 2022-05-27T09:48:31Z
  file_id: '11416'
  file_name: 2021_PKC_Walter.pdf
  file_size: 489017
  relation: main_file
  success: 1
file_date_updated: 2022-05-27T09:48:31Z
has_accepted_license: '1'
intvolume: '     12710'
isi: 1
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '05'
oa: 1
oa_version: Published Version
page: 45-67
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: Public-Key Cryptography – PKC 2021
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030752446'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: The convergence of slide-type reductions
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12710
year: '2021'
...
---
_id: '9620'
abstract:
- lang: eng
  text: "In this note, we introduce a distributed twist on the classic coupon collector
    problem: a set of m collectors wish to each obtain a set of n coupons; for this,
    they can each sample coupons uniformly at random, but can also meet in pairwise
    interactions, during which they can exchange coupons. By doing so, they hope to
    reduce the number of coupons that must be sampled by each collector in order to
    obtain a full set. This extension is natural when considering real-world manifestations
    of the coupon collector phenomenon, and has been remarked upon and studied empirically
    (Hayes and Hannigan 2006, Ahmad et al. 2014, Delmarcelle 2019).\r\n\r\nWe provide
    the first theoretical analysis for such a scenario. We find that “coupon collecting
    with friends” can indeed significantly reduce the number of coupons each collector
    must sample, and raises interesting connections to the more traditional variants
    of the problem. While our analysis is in most cases asymptotically tight, there
    are several open questions raised, regarding finer-grained analysis of both “coupon
    collecting with friends,” and of a long-studied variant of the original problem
    in which a collector requires multiple full sets of coupons."
acknowledgement: Peter Davies is supported by the European Union’s Horizon2020 research
  and innovation programme under the Marie Skłodowska-Curie grant agreement No. 754411.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
- first_name: Peter
  full_name: Davies, Peter
  id: 11396234-BB50-11E9-B24C-90FCE5697425
  last_name: Davies
  orcid: 0000-0002-5646-9524
citation:
  ama: 'Alistarh D-A, Davies P. Collecting coupons is faster with friends. In: <i>Structural
    Information and Communication Complexity</i>. Vol 12810. Springer Nature; 2021:3-12.
    doi:<a href="https://doi.org/10.1007/978-3-030-79527-6_1">10.1007/978-3-030-79527-6_1</a>'
  apa: 'Alistarh, D.-A., &#38; Davies, P. (2021). Collecting coupons is faster with
    friends. In <i>Structural Information and Communication Complexity</i> (Vol. 12810,
    pp. 3–12). Wrocław, Poland: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-79527-6_1">https://doi.org/10.1007/978-3-030-79527-6_1</a>'
  chicago: Alistarh, Dan-Adrian, and Peter Davies. “Collecting Coupons Is Faster with
    Friends.” In <i>Structural Information and Communication Complexity</i>, 12810:3–12.
    Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-79527-6_1">https://doi.org/10.1007/978-3-030-79527-6_1</a>.
  ieee: D.-A. Alistarh and P. Davies, “Collecting coupons is faster with friends,”
    in <i>Structural Information and Communication Complexity</i>, Wrocław, Poland,
    2021, vol. 12810, pp. 3–12.
  ista: 'Alistarh D-A, Davies P. 2021. Collecting coupons is faster with friends.
    Structural Information and Communication Complexity. SIROCCO: International Colloquium
    on Structural Information and Communication Complexity, LNCS, vol. 12810, 3–12.'
  mla: Alistarh, Dan-Adrian, and Peter Davies. “Collecting Coupons Is Faster with
    Friends.” <i>Structural Information and Communication Complexity</i>, vol. 12810,
    Springer Nature, 2021, pp. 3–12, doi:<a href="https://doi.org/10.1007/978-3-030-79527-6_1">10.1007/978-3-030-79527-6_1</a>.
  short: D.-A. Alistarh, P. Davies, in:, Structural Information and Communication
    Complexity, Springer Nature, 2021, pp. 3–12.
conference:
  end_date: 2021-07-01
  location: Wrocław, Poland
  name: 'SIROCCO: International Colloquium on Structural Information and Communication
    Complexity'
  start_date: 2021-06-28
date_created: 2021-07-01T11:04:43Z
date_published: 2021-06-20T00:00:00Z
date_updated: 2025-09-10T10:04:46Z
day: '20'
ddc:
- '000'
department:
- _id: DaAl
doi: 10.1007/978-3-030-79527-6_1
ec_funded: 1
external_id:
  isi:
  - '001292788400001'
file:
- access_level: open_access
  checksum: fe37fb9af3f5016c1084af9d6e7109bd
  content_type: application/pdf
  creator: pdavies
  date_created: 2021-07-01T11:21:40Z
  date_updated: 2021-07-01T11:21:40Z
  file_id: '9621'
  file_name: Population_Coupon_Collector.pdf
  file_size: 319728
  relation: main_file
file_date_updated: 2021-07-01T11:21:40Z
has_accepted_license: '1'
intvolume: '     12810'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Preprint
page: 3-12
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: Structural Information and Communication Complexity
publication_identifier:
  eisbn:
  - '9783030795276'
  eissn:
  - 1611-3349
  isbn:
  - '9783030795269'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Collecting coupons is faster with friends
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 12810
year: '2021'
...
---
_id: '9823'
abstract:
- lang: eng
  text: "Approximate agreement is one of the few variants of consensus that can be
    solved in a wait-free manner in asynchronous systems where processes communicate
    by reading and writing to shared memory. In this work, we consider a natural generalisation
    of approximate agreement on arbitrary undirected connected graphs. Each process
    is given a vertex of the graph as input and, if non-faulty, must output a vertex
    such that\r\nall the outputs are within distance 1 of one another, and\r\n\r\neach
    output value lies on a shortest path between two input values.\r\n\r\nFrom prior
    work, it is known that there is no wait-free algorithm among   \U0001D45B≥3  processes
    for this problem on any cycle of length   \U0001D450≥4 , by reduction from 2-set
    agreement (Castañeda et al. 2018).\r\n\r\nIn this work, we investigate the solvability
    and complexity of this task on general graphs. We give a new, direct proof of
    the impossibility of approximate agreement on cycles of length   \U0001D450≥4
    , via a generalisation of Sperner’s Lemma to convex polygons. We also extend the
    reduction from 2-set agreement to a larger class of graphs, showing that approximate
    agreement on these graphs is unsolvable. On the positive side, we present a wait-free
    algorithm for a class of graphs that properly contains the class of chordal graphs."
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
- first_name: Faith
  full_name: Ellen, Faith
  last_name: Ellen
- first_name: Joel
  full_name: Rybicki, Joel
  id: 334EFD2E-F248-11E8-B48F-1D18A9856A87
  last_name: Rybicki
  orcid: 0000-0002-6432-6646
citation:
  ama: 'Alistarh D-A, Ellen F, Rybicki J. Wait-free approximate agreement on graphs.
    In: <i>Structural Information and Communication Complexity</i>. Vol 12810. Springer
    Nature; 2021:87-105. doi:<a href="https://doi.org/10.1007/978-3-030-79527-6_6">10.1007/978-3-030-79527-6_6</a>'
  apa: 'Alistarh, D.-A., Ellen, F., &#38; Rybicki, J. (2021). Wait-free approximate
    agreement on graphs. In <i>Structural Information and Communication Complexity</i>
    (Vol. 12810, pp. 87–105). Wrocław, Poland: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-79527-6_6">https://doi.org/10.1007/978-3-030-79527-6_6</a>'
  chicago: Alistarh, Dan-Adrian, Faith Ellen, and Joel Rybicki. “Wait-Free Approximate
    Agreement on Graphs.” In <i>Structural Information and Communication Complexity</i>,
    12810:87–105. Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-79527-6_6">https://doi.org/10.1007/978-3-030-79527-6_6</a>.
  ieee: D.-A. Alistarh, F. Ellen, and J. Rybicki, “Wait-free approximate agreement
    on graphs,” in <i>Structural Information and Communication Complexity</i>, Wrocław,
    Poland, 2021, vol. 12810, pp. 87–105.
  ista: 'Alistarh D-A, Ellen F, Rybicki J. 2021. Wait-free approximate agreement on graphs.
    Structural Information and Communication Complexity. SIROCCO: Structural Information
    and Communication Complexity, LNCS, vol. 12810, 87–105.'
  mla: Alistarh, Dan-Adrian, et al. “Wait-Free Approximate Agreement on Graphs.” <i>Structural
    Information and Communication Complexity</i>, vol. 12810, Springer Nature, 2021,
    pp. 87–105, doi:<a href="https://doi.org/10.1007/978-3-030-79527-6_6">10.1007/978-3-030-79527-6_6</a>.
  short: D.-A. Alistarh, F. Ellen, J. Rybicki, in:, Structural Information and Communication
    Complexity, Springer Nature, 2021, pp. 87–105.
conference:
  end_date: 2021-07-01
  location: Wrocław, Poland
  name: 'SIROCCO: Structural Information and Communication Complexity'
  start_date: 2021-06-28
date_created: 2021-08-08T22:01:29Z
date_published: 2021-06-20T00:00:00Z
date_updated: 2026-04-16T09:26:11Z
day: '20'
department:
- _id: DaAl
doi: 10.1007/978-3-030-79527-6_6
external_id:
  arxiv:
  - '2103.08949'
  isi:
  - '001292788400006'
intvolume: '     12810'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2103.08949
month: '06'
oa: 1
oa_version: Preprint
page: 87-105
publication: Structural Information and Communication Complexity
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030795269'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Wait-free approximate agreement on graphs
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12810
year: '2021'
...
---
_id: '9824'
abstract:
- lang: eng
  text: We define a new compact coordinate system in which each integer triplet addresses
    a voxel in the BCC grid, and we investigate some of its properties. We propose
    a characterization of 3D discrete analytical planes with their topological features
    (in the Cartesian and in the new coordinate system) such as the interrelation
    between the thickness of the plane and the separability constraint we aim to obtain.
acknowledgement: 'This work has been partially supported by the Ministry of Education,
  Science and Technological Development of the Republic of Serbia through the project
  no. 451-03-68/2020-14/200156: “Innovative scientific and artistic research from
  the FTS (activity) domain” (LČ), the European Research Council (ERC) under the European
  Union’s Horizon 2020 research and innovation programme, grant no. 788183 (RB), and
  the DFG Collaborative Research Center TRR 109, ‘Discretization in Geometry and Dynamics’,
  Austrian Science Fund (FWF), grant no. I 02979-N35 (RB).'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Lidija
  full_name: Čomić, Lidija
  last_name: Čomić
- first_name: Rita
  full_name: Zrour, Rita
  last_name: Zrour
- first_name: Gaëlle
  full_name: Largeteau-Skapin, Gaëlle
  last_name: Largeteau-Skapin
- first_name: Ranita
  full_name: Biswas, Ranita
  id: 3C2B033E-F248-11E8-B48F-1D18A9856A87
  last_name: Biswas
  orcid: 0000-0002-5372-7890
- first_name: Eric
  full_name: Andres, Eric
  last_name: Andres
citation:
  ama: 'Čomić L, Zrour R, Largeteau-Skapin G, Biswas R, Andres E. Body centered cubic
    grid - coordinate system and discrete analytical plane definition. In: <i>Discrete
    Geometry and Mathematical Morphology</i>. Vol 12708. Springer Nature; 2021:152-163.
    doi:<a href="https://doi.org/10.1007/978-3-030-76657-3_10">10.1007/978-3-030-76657-3_10</a>'
  apa: 'Čomić, L., Zrour, R., Largeteau-Skapin, G., Biswas, R., &#38; Andres, E. (2021).
    Body centered cubic grid - coordinate system and discrete analytical plane definition.
    In <i>Discrete Geometry and Mathematical Morphology</i> (Vol. 12708, pp. 152–163).
    Uppsala, Sweden: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-76657-3_10">https://doi.org/10.1007/978-3-030-76657-3_10</a>'
  chicago: Čomić, Lidija, Rita Zrour, Gaëlle Largeteau-Skapin, Ranita Biswas, and
    Eric Andres. “Body Centered Cubic Grid - Coordinate System and Discrete Analytical
    Plane Definition.” In <i>Discrete Geometry and Mathematical Morphology</i>, 12708:152–63.
    Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-76657-3_10">https://doi.org/10.1007/978-3-030-76657-3_10</a>.
  ieee: L. Čomić, R. Zrour, G. Largeteau-Skapin, R. Biswas, and E. Andres, “Body centered
    cubic grid - coordinate system and discrete analytical plane definition,” in <i>Discrete
    Geometry and Mathematical Morphology</i>, Uppsala, Sweden, 2021, vol. 12708, pp.
    152–163.
  ista: 'Čomić L, Zrour R, Largeteau-Skapin G, Biswas R, Andres E. 2021. Body centered
    cubic grid - coordinate system and discrete analytical plane definition. Discrete
    Geometry and Mathematical Morphology. DGMM: International Conference on Discrete
    Geometry and Mathematical Morphology, LNCS, vol. 12708, 152–163.'
  mla: Čomić, Lidija, et al. “Body Centered Cubic Grid - Coordinate System and Discrete
    Analytical Plane Definition.” <i>Discrete Geometry and Mathematical Morphology</i>,
    vol. 12708, Springer Nature, 2021, pp. 152–63, doi:<a href="https://doi.org/10.1007/978-3-030-76657-3_10">10.1007/978-3-030-76657-3_10</a>.
  short: L. Čomić, R. Zrour, G. Largeteau-Skapin, R. Biswas, E. Andres, in:, Discrete
    Geometry and Mathematical Morphology, Springer Nature, 2021, pp. 152–163.
conference:
  end_date: 2021-05-27
  location: Uppsala, Sweden
  name: 'DGMM: International Conference on Discrete Geometry and Mathematical Morphology'
  start_date: 2021-05-24
date_created: 2021-08-08T22:01:29Z
date_published: 2021-05-16T00:00:00Z
date_updated: 2026-04-16T09:26:30Z
day: '16'
department:
- _id: HeEd
doi: 10.1007/978-3-030-76657-3_10
ec_funded: 1
external_id:
  isi:
  - '001286400400010'
intvolume: '     12708'
isi: 1
language:
- iso: eng
month: '05'
oa_version: None
page: 152-163
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: Discrete Geometry and Mathematical Morphology
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030766566'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Body centered cubic grid - coordinate system and discrete analytical plane
  definition
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12708
year: '2021'
...
---
_id: '9825'
abstract:
- lang: eng
  text: "The dual attack has long been considered a relevant attack on lattice-based
    cryptographic schemes relying on the hardness of learning with errors (LWE) and
    its structured variants. As solving LWE corresponds to finding a nearest point
    on a lattice, one may naturally wonder how efficient this dual approach is for
    solving more general closest vector problems, such as the classical closest vector
    problem (CVP), the variants bounded distance decoding (BDD) and approximate CVP,
    and preprocessing versions of these problems. While primal, sieving-based solutions
    to these problems (with preprocessing) were recently studied in a series of works
    on approximate Voronoi cells [Laa16b, DLdW19, Laa20, DLvW20], for the dual attack
    no such overview exists, especially for problems with preprocessing. With one
    of the take-away messages of the approximate Voronoi cell line of work being that
    primal attacks work well for approximate CVP(P) but scale poorly for BDD(P), one
    may further wonder if the dual attack suffers the same drawbacks, or if it is
    perhaps a better solution when trying to solve BDD(P).\r\n\r\nIn this work we
    provide an overview of cost estimates for dual algorithms for solving these “classical”
    closest lattice vector problems. Heuristically we expect to solve the search version
    of average-case CVPP in time and space   20.293\U0001D451+\U0001D45C(\U0001D451)
    \ in the single-target model. The distinguishing version of average-case CVPP,
    where we wish to distinguish between random targets and targets planted at distance
    (say)   0.99⋅\U0001D454\U0001D451  from the lattice, has the same complexity in
    the single-target model, but can be solved in time and space   20.195\U0001D451+\U0001D45C(\U0001D451)
    \ in the multi-target setting, when given a large number of targets from either
    target distribution. This suggests an inequivalence between distinguishing and
    searching, as we do not expect a similar improvement in the multi-target setting
    to hold for search-CVPP. We analyze three slightly different decoders, both for
    distinguishing and searching, and experimentally obtain concrete cost estimates
    for the dual attack in dimensions 50 to 80, which confirm our heuristic assumptions,
    and show that the hidden order terms in the asymptotic estimates are quite small.\r\n\r\nOur
    main take-away message is that the dual attack appears to mirror the approximate
    Voronoi cell line of work – whereas using approximate Voronoi cells works well
    for approximate CVP(P) but scales poorly for BDD(P), the dual approach scales
    well for BDD(P) instances but performs poorly on approximate CVP(P)."
acknowledgement: The authors thank Sauvik Bhattacharya, L´eo Ducas, Rachel Player,
  and Christine van Vredendaal for early discussions on this topic and on preliminary
  results. The authors further thank the reviewers of CT-RSA 2021 for their valuable
  feedback.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thijs
  full_name: Laarhoven, Thijs
  last_name: Laarhoven
- first_name: Michael
  full_name: Walter, Michael
  id: 488F98B0-F248-11E8-B48F-1D18A9856A87
  last_name: Walter
  orcid: 0000-0003-3186-2482
citation:
  ama: 'Laarhoven T, Walter M. Dual lattice attacks for closest vector problems (with
    preprocessing). In: <i>Topics in Cryptology – CT-RSA 2021</i>. Vol 12704. Springer
    Nature; 2021:478-502. doi:<a href="https://doi.org/10.1007/978-3-030-75539-3_20">10.1007/978-3-030-75539-3_20</a>'
  apa: 'Laarhoven, T., &#38; Walter, M. (2021). Dual lattice attacks for closest vector
    problems (with preprocessing). In <i>Topics in Cryptology – CT-RSA 2021</i> (Vol.
    12704, pp. 478–502). Virtual Event: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-75539-3_20">https://doi.org/10.1007/978-3-030-75539-3_20</a>'
  chicago: Laarhoven, Thijs, and Michael Walter. “Dual Lattice Attacks for Closest
    Vector Problems (with Preprocessing).” In <i>Topics in Cryptology – CT-RSA 2021</i>,
    12704:478–502. Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-75539-3_20">https://doi.org/10.1007/978-3-030-75539-3_20</a>.
  ieee: T. Laarhoven and M. Walter, “Dual lattice attacks for closest vector problems
    (with preprocessing),” in <i>Topics in Cryptology – CT-RSA 2021</i>, Virtual Event,
    2021, vol. 12704, pp. 478–502.
  ista: 'Laarhoven T, Walter M. 2021. Dual lattice attacks for closest vector problems
    (with preprocessing). Topics in Cryptology – CT-RSA 2021. CT-RSA: Cryptographers’
    Track at the RSA Conference, LNCS, vol. 12704, 478–502.'
  mla: Laarhoven, Thijs, and Michael Walter. “Dual Lattice Attacks for Closest Vector
    Problems (with Preprocessing).” <i>Topics in Cryptology – CT-RSA 2021</i>, vol.
    12704, Springer Nature, 2021, pp. 478–502, doi:<a href="https://doi.org/10.1007/978-3-030-75539-3_20">10.1007/978-3-030-75539-3_20</a>.
  short: T. Laarhoven, M. Walter, in:, Topics in Cryptology – CT-RSA 2021, Springer
    Nature, 2021, pp. 478–502.
conference:
  end_date: 2021-05-20
  location: Virtual Event
  name: 'CT-RSA: Cryptographers’ Track at the RSA Conference'
  start_date: 2021-05-17
date_created: 2021-08-08T22:01:30Z
date_published: 2021-05-11T00:00:00Z
date_updated: 2026-04-16T09:28:30Z
day: '11'
department:
- _id: KrPi
doi: 10.1007/978-3-030-75539-3_20
intvolume: '     12704'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2021/557
month: '05'
oa: 1
oa_version: Preprint
page: 478-502
publication: Topics in Cryptology – CT-RSA 2021
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030755386'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dual lattice attacks for closest vector problems (with preprocessing)
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12704
year: '2021'
...
---
_id: '9826'
abstract:
- lang: eng
  text: "Automated contract tracing aims at supporting manual contact tracing during
    pandemics by alerting users of encounters with infected people. There are currently
    many proposals for protocols (like the “decentralized” DP-3T and PACT or the “centralized”
    ROBERT and DESIRE) to be run on mobile phones, where the basic idea is to regularly
    broadcast (using low energy Bluetooth) some values, and at the same time store
    (a function of) incoming messages broadcasted by users in their proximity. In
    the existing proposals one can trigger false positives on a massive scale by an
    “inverse-Sybil” attack, where a large number of devices (malicious users or hacked
    phones) pretend to be the same user, such that later, just a single person needs
    to be diagnosed (and allowed to upload) to trigger an alert for all users who
    were in proximity to any of this large group of devices.\r\n\r\nWe propose the
    first protocols that do not succumb to such attacks assuming the devices involved
    in the attack do not constantly communicate, which we observe is a necessary assumption.
    The high level idea of the protocols is to derive the values to be broadcasted
    by a hash chain, so that two (or more) devices who want to launch an inverse-Sybil
    attack will not be able to connect their respective chains and thus only one of
    them will be able to upload. Our protocols also achieve security against replay,
    belated replay, and one of them even against relay attacks."
acknowledgement: Guillermo Pascual-Perez and Michelle Yeo were funded by the European
  Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska–Curie
  Grant Agreement No. 665385; the remaining contributors to this project have received
  funding from the European Research Council (ERC) under the European Union’s Horizon
  2020 research and innovation programme (682815 - TOCNeT).
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Benedikt
  full_name: Auerbach, Benedikt
  id: D33D2B18-E445-11E9-ABB7-15F4E5697425
  last_name: Auerbach
  orcid: 0000-0002-7553-6606
- first_name: Suvradip
  full_name: Chakraborty, Suvradip
  id: B9CD0494-D033-11E9-B219-A439E6697425
  last_name: Chakraborty
- first_name: Karen
  full_name: Klein, Karen
  id: 3E83A2F8-F248-11E8-B48F-1D18A9856A87
  last_name: Klein
- first_name: Guillermo
  full_name: Pascual Perez, Guillermo
  id: 2D7ABD02-F248-11E8-B48F-1D18A9856A87
  last_name: Pascual Perez
  orcid: 0000-0001-8630-415X
- first_name: Krzysztof Z
  full_name: Pietrzak, Krzysztof Z
  id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
  last_name: Pietrzak
  orcid: 0000-0002-9139-1654
- first_name: Michael
  full_name: Walter, Michael
  id: 488F98B0-F248-11E8-B48F-1D18A9856A87
  last_name: Walter
  orcid: 0000-0003-3186-2482
- first_name: Michelle X
  full_name: Yeo, Michelle X
  id: 2D82B818-F248-11E8-B48F-1D18A9856A87
  last_name: Yeo
  orcid: 0009-0001-3676-4809
citation:
  ama: 'Auerbach B, Chakraborty S, Klein K, et al. Inverse-Sybil attacks in automated
    contact tracing. In: <i>Topics in Cryptology – CT-RSA 2021</i>. Vol 12704. Springer
    Nature; 2021:399-421. doi:<a href="https://doi.org/10.1007/978-3-030-75539-3_17">10.1007/978-3-030-75539-3_17</a>'
  apa: 'Auerbach, B., Chakraborty, S., Klein, K., Pascual Perez, G., Pietrzak, K.
    Z., Walter, M., &#38; Yeo, M. X. (2021). Inverse-Sybil attacks in automated contact
    tracing. In <i>Topics in Cryptology – CT-RSA 2021</i> (Vol. 12704, pp. 399–421).
    Virtual Event: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-75539-3_17">https://doi.org/10.1007/978-3-030-75539-3_17</a>'
  chicago: Auerbach, Benedikt, Suvradip Chakraborty, Karen Klein, Guillermo Pascual
    Perez, Krzysztof Z Pietrzak, Michael Walter, and Michelle X Yeo. “Inverse-Sybil
    Attacks in Automated Contact Tracing.” In <i>Topics in Cryptology – CT-RSA 2021</i>,
    12704:399–421. Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-75539-3_17">https://doi.org/10.1007/978-3-030-75539-3_17</a>.
  ieee: B. Auerbach <i>et al.</i>, “Inverse-Sybil attacks in automated contact tracing,”
    in <i>Topics in Cryptology – CT-RSA 2021</i>, Virtual Event, 2021, vol. 12704,
    pp. 399–421.
  ista: 'Auerbach B, Chakraborty S, Klein K, Pascual Perez G, Pietrzak KZ, Walter
    M, Yeo MX. 2021. Inverse-Sybil attacks in automated contact tracing. Topics in
    Cryptology – CT-RSA 2021. CT-RSA: Cryptographers’ Track at the RSA Conference,
    LNCS, vol. 12704, 399–421.'
  mla: Auerbach, Benedikt, et al. “Inverse-Sybil Attacks in Automated Contact Tracing.”
    <i>Topics in Cryptology – CT-RSA 2021</i>, vol. 12704, Springer Nature, 2021,
    pp. 399–421, doi:<a href="https://doi.org/10.1007/978-3-030-75539-3_17">10.1007/978-3-030-75539-3_17</a>.
  short: B. Auerbach, S. Chakraborty, K. Klein, G. Pascual Perez, K.Z. Pietrzak, M.
    Walter, M.X. Yeo, in:, Topics in Cryptology – CT-RSA 2021, Springer Nature, 2021,
    pp. 399–421.
conference:
  end_date: 2021-05-20
  location: Virtual Event
  name: 'CT-RSA: Cryptographers’ Track at the RSA Conference'
  start_date: 2021-05-17
corr_author: '1'
date_created: 2021-08-08T22:01:30Z
date_published: 2021-05-11T00:00:00Z
date_updated: 2026-04-16T09:28:46Z
day: '11'
department:
- _id: KrPi
- _id: GradSch
doi: 10.1007/978-3-030-75539-3_17
ec_funded: 1
intvolume: '     12704'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2020/670
month: '05'
oa: 1
oa_version: Submitted Version
page: 399-421
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: Topics in Cryptology – CT-RSA 2021
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030755386'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Inverse-Sybil attacks in automated contact tracing
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12704
year: '2021'
...
---
_id: '9987'
abstract:
- lang: eng
  text: 'Stateless model checking (SMC) is one of the standard approaches to the verification
    of concurrent programs. As scheduling non-determinism creates exponentially large
    spaces of thread interleavings, SMC attempts to partition this space into equivalence
    classes and explore only a few representatives from each class. The efficiency
    of this approach depends on two factors: (a) the coarseness of the partitioning,
    and (b) the time to generate representatives in each class. For this reason, the
    search for coarse partitionings that are efficiently explorable is an active research
    challenge. In this work we present   RVF-SMC , a new SMC algorithm that uses a
    novel reads-value-from (RVF) partitioning. Intuitively, two interleavings are
    deemed equivalent if they agree on the value obtained in each read event, and
    read events induce consistent causal orderings between them. The RVF partitioning
    is provably coarser than recent approaches based on Mazurkiewicz and “reads-from”
    partitionings. Our experimental evaluation reveals that RVF is quite often a very
    effective equivalence, as the underlying partitioning is exponentially coarser
    than other approaches. Moreover,   RVF-SMC  generates representatives very efficiently,
    as the reduction in the partitioning is often met with significant speed-ups in
    the model checking task.'
acknowledgement: The research was partially funded by the ERC CoG 863818 (ForM-SMArt)
  and the Vienna Science and Technology Fund (WWTF) through project ICT15-003.
alternative_title:
- LNCS
article_processing_charge: Yes
arxiv: 1
author:
- first_name: Pratyush
  full_name: Agarwal, Pratyush
  last_name: Agarwal
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Shreya
  full_name: Pathak, Shreya
  last_name: Pathak
- first_name: Andreas
  full_name: Pavlogiannis, Andreas
  id: 49704004-F248-11E8-B48F-1D18A9856A87
  last_name: Pavlogiannis
  orcid: 0000-0002-8943-0722
- first_name: Viktor
  full_name: Toman, Viktor
  id: 3AF3DA7C-F248-11E8-B48F-1D18A9856A87
  last_name: Toman
  orcid: 0000-0001-9036-063X
citation:
  ama: 'Agarwal P, Chatterjee K, Pathak S, Pavlogiannis A, Toman V. Stateless model
    checking under a reads-value-from equivalence. In: <i>33rd International Conference
    on Computer-Aided Verification </i>. Vol 12759. Springer Nature; 2021:341-366.
    doi:<a href="https://doi.org/10.1007/978-3-030-81685-8_16">10.1007/978-3-030-81685-8_16</a>'
  apa: 'Agarwal, P., Chatterjee, K., Pathak, S., Pavlogiannis, A., &#38; Toman, V.
    (2021). Stateless model checking under a reads-value-from equivalence. In <i>33rd
    International Conference on Computer-Aided Verification </i> (Vol. 12759, pp.
    341–366). Virtual: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-81685-8_16">https://doi.org/10.1007/978-3-030-81685-8_16</a>'
  chicago: Agarwal, Pratyush, Krishnendu Chatterjee, Shreya Pathak, Andreas Pavlogiannis,
    and Viktor Toman. “Stateless Model Checking under a Reads-Value-from Equivalence.”
    In <i>33rd International Conference on Computer-Aided Verification </i>, 12759:341–66.
    Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-81685-8_16">https://doi.org/10.1007/978-3-030-81685-8_16</a>.
  ieee: P. Agarwal, K. Chatterjee, S. Pathak, A. Pavlogiannis, and V. Toman, “Stateless
    model checking under a reads-value-from equivalence,” in <i>33rd International
    Conference on Computer-Aided Verification </i>, Virtual, 2021, vol. 12759, pp.
    341–366.
  ista: 'Agarwal P, Chatterjee K, Pathak S, Pavlogiannis A, Toman V. 2021. Stateless
    model checking under a reads-value-from equivalence. 33rd International Conference
    on Computer-Aided Verification . CAV: Computer Aided Verification , LNCS, vol.
    12759, 341–366.'
  mla: Agarwal, Pratyush, et al. “Stateless Model Checking under a Reads-Value-from
    Equivalence.” <i>33rd International Conference on Computer-Aided Verification
    </i>, vol. 12759, Springer Nature, 2021, pp. 341–66, doi:<a href="https://doi.org/10.1007/978-3-030-81685-8_16">10.1007/978-3-030-81685-8_16</a>.
  short: P. Agarwal, K. Chatterjee, S. Pathak, A. Pavlogiannis, V. Toman, in:, 33rd
    International Conference on Computer-Aided Verification , Springer Nature, 2021,
    pp. 341–366.
conference:
  end_date: 2021-07-23
  location: Virtual
  name: 'CAV: Computer Aided Verification '
  start_date: 2021-07-20
corr_author: '1'
date_created: 2021-09-05T22:01:24Z
date_published: 2021-07-15T00:00:00Z
date_updated: 2026-04-08T07:00:30Z
day: '15'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-030-81685-8_16
ec_funded: 1
external_id:
  arxiv:
  - '2105.06424'
  isi:
  - '000698732400016'
file:
- access_level: open_access
  checksum: 4b346e5fbaa8b9bdf107819c7b2aadee
  content_type: application/pdf
  creator: dernst
  date_created: 2022-05-13T07:00:20Z
  date_updated: 2022-05-13T07:00:20Z
  file_id: '11368'
  file_name: 2021_LNCS_Agarwal.pdf
  file_size: 1516756
  relation: main_file
  success: 1
file_date_updated: 2022-05-13T07:00:20Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 341-366
project:
- _id: 25892FC0-B435-11E9-9278-68D0E5697425
  grant_number: ICT15-003
  name: Efficient Algorithms for Computer Aided Verification
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: '33rd International Conference on Computer-Aided Verification '
publication_identifier:
  eisbn:
  - 978-3-030-81685-8
  eissn:
  - 1611-3349
  isbn:
  - 978-3-030-81684-1
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '10199'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stateless model checking under a reads-value-from equivalence
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: '12759 '
year: '2021'
...
---
_id: '10865'
abstract:
- lang: eng
  text: "We introduce the notion of Witness Maps as a cryptographic notion of a proof
    system. A Unique Witness Map (UWM) deterministically maps all witnesses for an
    \  NP  statement to a single representative witness, resulting in a computationally
    sound, deterministic-prover, non-interactive witness independent proof system.
    A relaxation of UWM, called Compact Witness Map (CWM), maps all the witnesses
    to a small number of witnesses, resulting in a “lossy” deterministic-prover, non-interactive
    proof-system. We also define a Dual Mode Witness Map (DMWM) which adds an “extractable”
    mode to a CWM.\r\nOur main construction is a DMWM for all   NP  relations, assuming
    sub-exponentially secure indistinguishability obfuscation (  iO ), along with
    standard cryptographic assumptions. The DMWM construction relies on a CWM and
    a new primitive called Cumulative All-Lossy-But-One Trapdoor Functions (C-ALBO-TDF),
    both of which are in turn instantiated based on   iO  and other primitives. Our
    instantiation of a CWM is in fact a UWM; in turn, we show that a UWM implies Witness
    Encryption. Along the way to constructing UWM and C-ALBO-TDF, we also construct,
    from standard assumptions, Puncturable Digital Signatures and a new primitive
    called Cumulative Lossy Trapdoor Functions (C-LTDF). The former improves up on
    a construction of Bellare et al. (Eurocrypt 2016), who relied on sub-exponentially
    secure   iO  and sub-exponentially secure OWF.\r\nAs an application of our constructions,
    we show how to use a DMWM to construct the first leakage and tamper-resilient
    signatures with a deterministic signer, thereby solving a decade old open problem
    posed by Katz and Vaikunthanathan (Asiacrypt 2009), by Boyle, Segev and Wichs
    (Eurocrypt 2011), as well as by Faonio and Venturi (Asiacrypt 2016). Our construction
    achieves the optimal leakage rate of   1−o(1) ."
acknowledgement: We would like to thank the anonymous reviewers of PKC 2019 for their
  useful comments and suggestions. We thank Omer Paneth for pointing out to us the
  connection between Unique Witness Maps (UWM) and Witness encryption (WE). The first
  author would like to acknowledge Pandu Rangan for his involvement during the initial
  discussion phase of the project.
article_processing_charge: No
author:
- first_name: Suvradip
  full_name: Chakraborty, Suvradip
  id: B9CD0494-D033-11E9-B219-A439E6697425
  last_name: Chakraborty
- first_name: Manoj
  full_name: Prabhakaran, Manoj
  last_name: Prabhakaran
- first_name: Daniel
  full_name: Wichs, Daniel
  last_name: Wichs
citation:
  ama: 'Chakraborty S, Prabhakaran M, Wichs D. Witness maps and applications. In:
    Kiayias A, ed. <i>Public-Key Cryptography</i>. Vol 12110. LNCS. Cham: Springer
    Nature; 2020:220-246. doi:<a href="https://doi.org/10.1007/978-3-030-45374-9_8">10.1007/978-3-030-45374-9_8</a>'
  apa: 'Chakraborty, S., Prabhakaran, M., &#38; Wichs, D. (2020). Witness maps and
    applications. In A. Kiayias (Ed.), <i>Public-Key Cryptography</i> (Vol. 12110,
    pp. 220–246). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-45374-9_8">https://doi.org/10.1007/978-3-030-45374-9_8</a>'
  chicago: 'Chakraborty, Suvradip, Manoj Prabhakaran, and Daniel Wichs. “Witness Maps
    and Applications.” In <i>Public-Key Cryptography</i>, edited by A Kiayias, 12110:220–46.
    LNCS. Cham: Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-45374-9_8">https://doi.org/10.1007/978-3-030-45374-9_8</a>.'
  ieee: 'S. Chakraborty, M. Prabhakaran, and D. Wichs, “Witness maps and applications,”
    in <i>Public-Key Cryptography</i>, vol. 12110, A. Kiayias, Ed. Cham: Springer
    Nature, 2020, pp. 220–246.'
  ista: 'Chakraborty S, Prabhakaran M, Wichs D. 2020.Witness maps and applications.
    In: Public-Key Cryptography. vol. 12110, 220–246.'
  mla: Chakraborty, Suvradip, et al. “Witness Maps and Applications.” <i>Public-Key
    Cryptography</i>, edited by A Kiayias, vol. 12110, Springer Nature, 2020, pp.
    220–46, doi:<a href="https://doi.org/10.1007/978-3-030-45374-9_8">10.1007/978-3-030-45374-9_8</a>.
  short: S. Chakraborty, M. Prabhakaran, D. Wichs, in:, A. Kiayias (Ed.), Public-Key
    Cryptography, Springer Nature, Cham, 2020, pp. 220–246.
corr_author: '1'
date_created: 2022-03-18T11:35:51Z
date_published: 2020-04-29T00:00:00Z
date_updated: 2026-04-16T10:21:31Z
day: '29'
doi: 10.1007/978-3-030-45374-9_8
editor:
- first_name: A
  full_name: Kiayias, A
  last_name: Kiayias
external_id:
  isi:
  - '001299210200008'
intvolume: '     12110'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2020/090
month: '04'
oa: 1
oa_version: Preprint
page: 220-246
place: Cham
publication: Public-Key Cryptography
publication_identifier:
  eisbn:
  - '9783030453749'
  eissn:
  - 1611-3349
  isbn:
  - '9783030453732'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: LNCS
status: public
title: Witness maps and applications
type: book_chapter
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12110
year: '2020'
...
---
_id: '18251'
abstract:
- lang: eng
  text: Magnetic Resonance Imaging (MRI) has long been considered to be among the
    gold standards of today’s diagnostic imaging. The most significant drawback of
    MRI is long acquisition times, prohibiting its use in standard practice for some
    applications. Compressed sensing (CS) proposes to subsample the k-space (the Fourier
    domain dual to the physical space of spatial coordinates) leading to significantly
    accelerated acquisition. However, the benefit of compressed sensing has not been
    fully exploited; most of the sampling densities obtained through CS do not produce
    a trajectory that obeys the stringent constraints of the MRI machine imposed in
    practice. Inspired by recent success of deep learning-based approaches for image
    reconstruction and ideas from computational imaging on learning-based design of
    imaging systems, we introduce 3D FLAT, a novel protocol for data-driven design
    of 3D non-Cartesian accelerated trajectories in MRI. Our proposal leverages the
    entire 3D k-space to simultaneously learn a physically feasible acquisition trajectory
    with a reconstruction method. Experimental results, performed as a proof-of-concept,
    suggest that 3D FLAT achieves higher image quality for a given readout time compared
    to standard trajectories such as radial, stack-of-stars, or 2D learned trajectories
    (trajectories that evolve only in the 2D plane while fully sampling along the
    third dimension). Furthermore, we demonstrate evidence supporting the significant
    benefit of performing MRI acquisitions using non-Cartesian 3D trajectories over
    2D non-Cartesian trajectories acquired slice-wise.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Jonathan
  full_name: Alush-Aben, Jonathan
  last_name: Alush-Aben
- first_name: Linor
  full_name: Ackerman-Schraier, Linor
  last_name: Ackerman-Schraier
- first_name: Tomer
  full_name: Weiss, Tomer
  last_name: Weiss
- first_name: Sanketh
  full_name: Vedula, Sanketh
  last_name: Vedula
- first_name: Ortal
  full_name: Senouf, Ortal
  last_name: Senouf
- first_name: Alexander
  full_name: Bronstein, Alexander
  id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
  last_name: Bronstein
  orcid: 0000-0001-9699-8730
citation:
  ama: 'Alush-Aben J, Ackerman-Schraier L, Weiss T, Vedula S, Senouf O, Bronstein
    AM. 3D FLAT: Feasible learned acquisition trajectories for accelerated MRI. In:
    <i>International Workshop on Machine Learning for Medical Image Reconstruction</i>.
    Vol 12450. Springer Nature; 2020:3-16. doi:<a href="https://doi.org/10.1007/978-3-030-61598-7_1">10.1007/978-3-030-61598-7_1</a>'
  apa: 'Alush-Aben, J., Ackerman-Schraier, L., Weiss, T., Vedula, S., Senouf, O.,
    &#38; Bronstein, A. M. (2020). 3D FLAT: Feasible learned acquisition trajectories
    for accelerated MRI. In <i>International Workshop on Machine Learning for Medical
    Image Reconstruction</i> (Vol. 12450, pp. 3–16). Lima, Peru: Springer Nature.
    <a href="https://doi.org/10.1007/978-3-030-61598-7_1">https://doi.org/10.1007/978-3-030-61598-7_1</a>'
  chicago: 'Alush-Aben, Jonathan, Linor Ackerman-Schraier, Tomer Weiss, Sanketh Vedula,
    Ortal Senouf, and Alex M. Bronstein. “3D FLAT: Feasible Learned Acquisition Trajectories
    for Accelerated MRI.” In <i>International Workshop on Machine Learning for Medical
    Image Reconstruction</i>, 12450:3–16. Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-61598-7_1">https://doi.org/10.1007/978-3-030-61598-7_1</a>.'
  ieee: 'J. Alush-Aben, L. Ackerman-Schraier, T. Weiss, S. Vedula, O. Senouf, and
    A. M. Bronstein, “3D FLAT: Feasible learned acquisition trajectories for accelerated
    MRI,” in <i>International Workshop on Machine Learning for Medical Image Reconstruction</i>,
    Lima, Peru, 2020, vol. 12450, pp. 3–16.'
  ista: 'Alush-Aben J, Ackerman-Schraier L, Weiss T, Vedula S, Senouf O, Bronstein
    AM. 2020. 3D FLAT: Feasible learned acquisition trajectories for accelerated MRI.
    International Workshop on Machine Learning for Medical Image Reconstruction. MLMIR:
    Workshop on Machine Learning for Medical Image Reconstruction, LNCS, vol. 12450,
    3–16.'
  mla: 'Alush-Aben, Jonathan, et al. “3D FLAT: Feasible Learned Acquisition Trajectories
    for Accelerated MRI.” <i>International Workshop on Machine Learning for Medical
    Image Reconstruction</i>, vol. 12450, Springer Nature, 2020, pp. 3–16, doi:<a
    href="https://doi.org/10.1007/978-3-030-61598-7_1">10.1007/978-3-030-61598-7_1</a>.'
  short: J. Alush-Aben, L. Ackerman-Schraier, T. Weiss, S. Vedula, O. Senouf, A.M.
    Bronstein, in:, International Workshop on Machine Learning for Medical Image Reconstruction,
    Springer Nature, 2020, pp. 3–16.
conference:
  end_date: 2020-10-08
  location: Lima, Peru
  name: 'MLMIR: Workshop on Machine Learning for Medical Image Reconstruction'
  start_date: 2020-10-08
date_created: 2024-10-08T13:06:03Z
date_published: 2020-10-20T00:00:00Z
date_updated: 2025-01-23T15:13:44Z
day: '20'
doi: 10.1007/978-3-030-61598-7_1
extern: '1'
intvolume: '     12450'
language:
- iso: eng
month: '10'
oa_version: None
page: 3 - 16
publication: International Workshop on Machine Learning for Medical Image Reconstruction
publication_identifier:
  eisbn:
  - '9783030615987'
  eissn:
  - 1611-3349
  isbn:
  - '9783030615970'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: '3D FLAT: Feasible learned acquisition trajectories for accelerated MRI'
type: conference
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 12450
year: '2020'
...
---
_id: '7808'
abstract:
- lang: eng
  text: Quantization converts neural networks into low-bit fixed-point computations
    which can be carried out by efficient integer-only hardware, and is standard practice
    for the deployment of neural networks on real-time embedded devices. However,
    like their real-numbered counterpart, quantized networks are not immune to malicious
    misclassification caused by adversarial attacks. We investigate how quantization
    affects a network’s robustness to adversarial attacks, which is a formal verification
    question. We show that neither robustness nor non-robustness are monotonic with
    changing the number of bits for the representation and, also, neither are preserved
    by quantization from a real-numbered network. For this reason, we introduce a
    verification method for quantized neural networks which, using SMT solving over
    bit-vectors, accounts for their exact, bit-precise semantics. We built a tool
    and analyzed the effect of quantization on a classifier for the MNIST dataset.
    We demonstrate that, compared to our method, existing methods for the analysis
    of real-numbered networks often derive false conclusions about their quantizations,
    both when determining robustness and when detecting attacks, and that existing
    methods for quantized networks often miss attacks. Furthermore, we applied our
    method beyond robustness, showing how the number of bits in quantization enlarges
    the gender bias of a predictor for students’ grades.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Mirco
  full_name: Giacobbe, Mirco
  id: 3444EA5E-F248-11E8-B48F-1D18A9856A87
  last_name: Giacobbe
  orcid: 0000-0001-8180-0904
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
citation:
  ama: 'Giacobbe M, Henzinger TA, Lechner M. How many bits does it take to quantize
    your neural network? In: <i>International Conference on Tools and Algorithms for
    the Construction and Analysis of Systems</i>. Vol 12079. Springer Nature; 2020:79-97.
    doi:<a href="https://doi.org/10.1007/978-3-030-45237-7_5">10.1007/978-3-030-45237-7_5</a>'
  apa: 'Giacobbe, M., Henzinger, T. A., &#38; Lechner, M. (2020). How many bits does
    it take to quantize your neural network? In <i>International Conference on Tools
    and Algorithms for the Construction and Analysis of Systems</i> (Vol. 12079, pp.
    79–97). Dublin, Ireland: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-45237-7_5">https://doi.org/10.1007/978-3-030-45237-7_5</a>'
  chicago: Giacobbe, Mirco, Thomas A Henzinger, and Mathias Lechner. “How Many Bits
    Does It Take to Quantize Your Neural Network?” In <i>International Conference
    on Tools and Algorithms for the Construction and Analysis of Systems</i>, 12079:79–97.
    Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-45237-7_5">https://doi.org/10.1007/978-3-030-45237-7_5</a>.
  ieee: M. Giacobbe, T. A. Henzinger, and M. Lechner, “How many bits does it take
    to quantize your neural network?,” in <i>International Conference on Tools and
    Algorithms for the Construction and Analysis of Systems</i>, Dublin, Ireland,
    2020, vol. 12079, pp. 79–97.
  ista: 'Giacobbe M, Henzinger TA, Lechner M. 2020. How many bits does it take to
    quantize your neural network? International Conference on Tools and Algorithms
    for the Construction and Analysis of Systems. TACAS: Tools and Algorithms for
    the Construction and Analysis of Systems, LNCS, vol. 12079, 79–97.'
  mla: Giacobbe, Mirco, et al. “How Many Bits Does It Take to Quantize Your Neural
    Network?” <i>International Conference on Tools and Algorithms for the Construction
    and Analysis of Systems</i>, vol. 12079, Springer Nature, 2020, pp. 79–97, doi:<a
    href="https://doi.org/10.1007/978-3-030-45237-7_5">10.1007/978-3-030-45237-7_5</a>.
  short: M. Giacobbe, T.A. Henzinger, M. Lechner, in:, International Conference on
    Tools and Algorithms for the Construction and Analysis of Systems, Springer Nature,
    2020, pp. 79–97.
conference:
  end_date: 2020-04-30
  location: Dublin, Ireland
  name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems'
  start_date: 2020-04-25
corr_author: '1'
date_created: 2020-05-10T22:00:49Z
date_published: 2020-04-17T00:00:00Z
date_updated: 2026-04-16T09:46:07Z
day: '17'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-030-45237-7_5
external_id:
  isi:
  - '001288734300005'
file:
- access_level: open_access
  checksum: f19905a42891fe5ce93d69143fa3f6fb
  content_type: application/pdf
  creator: dernst
  date_created: 2020-05-26T12:48:15Z
  date_updated: 2020-07-14T12:48:03Z
  file_id: '7893'
  file_name: 2020_TACAS_Giacobbe.pdf
  file_size: 2744030
  relation: main_file
file_date_updated: 2020-07-14T12:48:03Z
has_accepted_license: '1'
intvolume: '     12079'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 79-97
project:
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S 11407_N23
  name: Rigorous Systems Engineering
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: International Conference on Tools and Algorithms for the Construction
  and Analysis of Systems
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030452360'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '11362'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: How many bits does it take to quantize your neural network?
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12079
year: '2020'
...
---
_id: '7966'
abstract:
- lang: eng
  text: "For 1≤m≤n, we consider a natural m-out-of-n multi-instance scenario for a
    public-key encryption (PKE) scheme. An adversary, given n independent instances
    of PKE, wins if he breaks at least m out of the n instances. In this work, we
    are interested in the scaling factor of PKE schemes, SF, which measures how well
    the difficulty of breaking m out of the n instances scales in m. That is, a scaling
    factor SF=ℓ indicates that breaking m out of n instances is at least ℓ times more
    difficult than breaking one single instance. A PKE scheme with small scaling factor
    hence provides an ideal target for mass surveillance. In fact, the Logjam attack
    (CCS 2015) implicitly exploited, among other things, an almost constant scaling
    factor of ElGamal over finite fields (with shared group parameters).\r\n\r\nFor
    Hashed ElGamal over elliptic curves, we use the generic group model to argue that
    the scaling factor depends on the scheme's granularity. In low granularity, meaning
    each public key contains its independent group parameter, the scheme has optimal
    scaling factor SF=m; In medium and high granularity, meaning all public keys share
    the same group parameter, the scheme still has a reasonable scaling factor SF=√m.
    Our findings underline that instantiating ElGamal over elliptic curves should
    be preferred to finite fields in a multi-instance scenario.\r\n\r\nAs our main
    technical contribution, we derive new generic-group lower bounds of Ω(√(mp)) on
    the difficulty of solving both the m-out-of-n Gap Discrete Logarithm and the m-out-of-n
    Gap Computational Diffie-Hellman problem over groups of prime order p, extending
    a recent result by Yun (EUROCRYPT 2015). We establish the lower bound by studying
    the hardness of a related computational problem which we call the search-by-hypersurface
    problem."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Benedikt
  full_name: Auerbach, Benedikt
  id: D33D2B18-E445-11E9-ABB7-15F4E5697425
  last_name: Auerbach
  orcid: 0000-0002-7553-6606
- first_name: Federico
  full_name: Giacon, Federico
  last_name: Giacon
- first_name: Eike
  full_name: Kiltz, Eike
  last_name: Kiltz
citation:
  ama: 'Auerbach B, Giacon F, Kiltz E. Everybody’s a target: Scalability in public-key
    encryption. In: <i>Advances in Cryptology – EUROCRYPT 2020</i>. Vol 12107. Springer
    Nature; 2020:475-506. doi:<a href="https://doi.org/10.1007/978-3-030-45727-3_16">10.1007/978-3-030-45727-3_16</a>'
  apa: 'Auerbach, B., Giacon, F., &#38; Kiltz, E. (2020). Everybody’s a target: Scalability
    in public-key encryption. In <i>Advances in Cryptology – EUROCRYPT 2020</i> (Vol.
    12107, pp. 475–506). Springer Nature. <a href="https://doi.org/10.1007/978-3-030-45727-3_16">https://doi.org/10.1007/978-3-030-45727-3_16</a>'
  chicago: 'Auerbach, Benedikt, Federico Giacon, and Eike Kiltz. “Everybody’s a Target:
    Scalability in Public-Key Encryption.” In <i>Advances in Cryptology – EUROCRYPT
    2020</i>, 12107:475–506. Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-45727-3_16">https://doi.org/10.1007/978-3-030-45727-3_16</a>.'
  ieee: 'B. Auerbach, F. Giacon, and E. Kiltz, “Everybody’s a target: Scalability
    in public-key encryption,” in <i>Advances in Cryptology – EUROCRYPT 2020</i>,
    2020, vol. 12107, pp. 475–506.'
  ista: 'Auerbach B, Giacon F, Kiltz E. 2020. Everybody’s a target: Scalability in
    public-key encryption. Advances in Cryptology – EUROCRYPT 2020. EUROCRYPT: Theory
    and Applications of Cryptographic Techniques, LNCS, vol. 12107, 475–506.'
  mla: 'Auerbach, Benedikt, et al. “Everybody’s a Target: Scalability in Public-Key
    Encryption.” <i>Advances in Cryptology – EUROCRYPT 2020</i>, vol. 12107, Springer
    Nature, 2020, pp. 475–506, doi:<a href="https://doi.org/10.1007/978-3-030-45727-3_16">10.1007/978-3-030-45727-3_16</a>.'
  short: B. Auerbach, F. Giacon, E. Kiltz, in:, Advances in Cryptology – EUROCRYPT
    2020, Springer Nature, 2020, pp. 475–506.
conference:
  end_date: 2020-05-15
  name: 'EUROCRYPT: Theory and Applications of Cryptographic Techniques'
  start_date: 2020-05-11
date_created: 2020-06-15T07:13:37Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2026-04-16T10:21:02Z
day: '01'
department:
- _id: KrPi
doi: 10.1007/978-3-030-45727-3_16
ec_funded: 1
external_id:
  isi:
  - '000828688000016'
intvolume: '     12107'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2019/364
month: '05'
oa: 1
oa_version: Submitted Version
page: 475-506
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: Advances in Cryptology – EUROCRYPT 2020
publication_identifier:
  eisbn:
  - '9783030457273'
  eissn:
  - 1611-3349
  isbn:
  - '9783030457266'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Everybody’s a target: Scalability in public-key encryption'
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12107
year: '2020'
...
---
_id: '8194'
abstract:
- lang: eng
  text: 'Fixed-point arithmetic is a popular alternative to floating-point arithmetic
    on embedded systems. Existing work on the verification of fixed-point programs
    relies on custom formalizations of fixed-point arithmetic, which makes it hard
    to compare the described techniques or reuse the implementations. In this paper,
    we address this issue by proposing and formalizing an SMT theory of fixed-point
    arithmetic. We present an intuitive yet comprehensive syntax of the fixed-point
    theory, and provide formal semantics for it based on rational arithmetic. We also
    describe two decision procedures for this theory: one based on the theory of bit-vectors
    and the other on the theory of reals. We implement the two decision procedures,
    and evaluate our implementations using existing mature SMT solvers on a benchmark
    suite we created. Finally, we perform a case study of using the theory we propose
    to verify properties of quantized neural networks.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Marek
  full_name: Baranowski, Marek
  last_name: Baranowski
- first_name: Shaobo
  full_name: He, Shaobo
  last_name: He
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Thanh Son
  full_name: Nguyen, Thanh Son
  last_name: Nguyen
- first_name: Zvonimir
  full_name: Rakamarić, Zvonimir
  last_name: Rakamarić
citation:
  ama: 'Baranowski M, He S, Lechner M, Nguyen TS, Rakamarić Z. An SMT theory of fixed-point
    arithmetic. In: <i>Automated Reasoning</i>. Vol 12166. Springer Nature; 2020:13-31.
    doi:<a href="https://doi.org/10.1007/978-3-030-51074-9_2">10.1007/978-3-030-51074-9_2</a>'
  apa: 'Baranowski, M., He, S., Lechner, M., Nguyen, T. S., &#38; Rakamarić, Z. (2020).
    An SMT theory of fixed-point arithmetic. In <i>Automated Reasoning</i> (Vol. 12166,
    pp. 13–31). Paris, France: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-51074-9_2">https://doi.org/10.1007/978-3-030-51074-9_2</a>'
  chicago: Baranowski, Marek, Shaobo He, Mathias Lechner, Thanh Son Nguyen, and Zvonimir
    Rakamarić. “An SMT Theory of Fixed-Point Arithmetic.” In <i>Automated Reasoning</i>,
    12166:13–31. Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-51074-9_2">https://doi.org/10.1007/978-3-030-51074-9_2</a>.
  ieee: M. Baranowski, S. He, M. Lechner, T. S. Nguyen, and Z. Rakamarić, “An SMT
    theory of fixed-point arithmetic,” in <i>Automated Reasoning</i>, Paris, France,
    2020, vol. 12166, pp. 13–31.
  ista: 'Baranowski M, He S, Lechner M, Nguyen TS, Rakamarić Z. 2020. An SMT theory
    of fixed-point arithmetic. Automated Reasoning. IJCAR: International Joint Conference
    on Automated Reasoning, LNCS, vol. 12166, 13–31.'
  mla: Baranowski, Marek, et al. “An SMT Theory of Fixed-Point Arithmetic.” <i>Automated
    Reasoning</i>, vol. 12166, Springer Nature, 2020, pp. 13–31, doi:<a href="https://doi.org/10.1007/978-3-030-51074-9_2">10.1007/978-3-030-51074-9_2</a>.
  short: M. Baranowski, S. He, M. Lechner, T.S. Nguyen, Z. Rakamarić, in:, Automated
    Reasoning, Springer Nature, 2020, pp. 13–31.
conference:
  end_date: 2020-07-04
  location: Paris, France
  name: 'IJCAR: International Joint Conference on Automated Reasoning'
  start_date: 2020-07-01
date_created: 2020-08-02T22:00:59Z
date_published: 2020-06-24T00:00:00Z
date_updated: 2026-06-18T19:31:14Z
day: '24'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-030-51074-9_2
external_id:
  isi:
  - '000884318000002'
intvolume: '     12166'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1007/978-3-030-51074-9_2
month: '06'
oa: 1
oa_version: Published Version
page: 13-31
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Automated Reasoning
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030510732'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: An SMT theory of fixed-point arithmetic
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12166
year: '2020'
...
---
_id: '8195'
abstract:
- lang: eng
  text: This paper presents a foundation for refining concurrent programs with structured
    control flow. The verification problem is decomposed into subproblems that aid
    interactive program development, proof reuse, and automation. The formalization
    in this paper is the basis of a new design and implementation of the Civl verifier.
acknowledgement: "Bernhard Kragl and Thomas A. Henzinger were supported by\r\nthe
  Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award)."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Bernhard
  full_name: Kragl, Bernhard
  id: 320FC952-F248-11E8-B48F-1D18A9856A87
  last_name: Kragl
  orcid: 0000-0001-7745-9117
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
citation:
  ama: 'Kragl B, Qadeer S, Henzinger TA. Refinement for structured concurrent programs.
    In: <i>Computer Aided Verification</i>. Vol 12224. Springer Nature; 2020:275-298.
    doi:<a href="https://doi.org/10.1007/978-3-030-53288-8_14">10.1007/978-3-030-53288-8_14</a>'
  apa: Kragl, B., Qadeer, S., &#38; Henzinger, T. A. (2020). Refinement for structured
    concurrent programs. In <i>Computer Aided Verification</i> (Vol. 12224, pp. 275–298).
    Springer Nature. <a href="https://doi.org/10.1007/978-3-030-53288-8_14">https://doi.org/10.1007/978-3-030-53288-8_14</a>
  chicago: Kragl, Bernhard, Shaz Qadeer, and Thomas A Henzinger. “Refinement for Structured
    Concurrent Programs.” In <i>Computer Aided Verification</i>, 12224:275–98. Springer
    Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-53288-8_14">https://doi.org/10.1007/978-3-030-53288-8_14</a>.
  ieee: B. Kragl, S. Qadeer, and T. A. Henzinger, “Refinement for structured concurrent
    programs,” in <i>Computer Aided Verification</i>, 2020, vol. 12224, pp. 275–298.
  ista: Kragl B, Qadeer S, Henzinger TA. 2020. Refinement for structured concurrent
    programs. Computer Aided Verification. , LNCS, vol. 12224, 275–298.
  mla: Kragl, Bernhard, et al. “Refinement for Structured Concurrent Programs.” <i>Computer
    Aided Verification</i>, vol. 12224, Springer Nature, 2020, pp. 275–98, doi:<a
    href="https://doi.org/10.1007/978-3-030-53288-8_14">10.1007/978-3-030-53288-8_14</a>.
  short: B. Kragl, S. Qadeer, T.A. Henzinger, in:, Computer Aided Verification, Springer
    Nature, 2020, pp. 275–298.
corr_author: '1'
date_created: 2020-08-03T11:45:35Z
date_published: 2020-07-14T00:00:00Z
date_updated: 2026-04-08T07:23:52Z
day: '14'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-030-53288-8_14
external_id:
  isi:
  - '000695276000014'
file:
- access_level: open_access
  content_type: application/pdf
  creator: dernst
  date_created: 2020-08-06T08:14:54Z
  date_updated: 2020-08-06T08:14:54Z
  file_id: '8201'
  file_name: 2020_LNCS_Kragl.pdf
  file_size: 804237
  relation: main_file
  success: 1
file_date_updated: 2020-08-06T08:14:54Z
has_accepted_license: '1'
intvolume: '     12224'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 275-298
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Computer Aided Verification
publication_identifier:
  eisbn:
  - '9783030532888'
  eissn:
  - 1611-3349
  isbn:
  - '9783030532871'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '8332'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Refinement for structured concurrent programs
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 12224
year: '2020'
...
---
_id: '8272'
abstract:
- lang: eng
  text: We study turn-based stochastic zero-sum games with lexicographic preferences
    over reachability and safety objectives. Stochastic games are standard models
    in control, verification, and synthesis of stochastic reactive systems that exhibit
    both randomness as well as angelic and demonic non-determinism. Lexicographic
    order allows to consider multiple objectives with a strict preference order over
    the satisfaction of the objectives. To the best of our knowledge, stochastic games
    with lexicographic objectives have not been studied before. We establish determinacy
    of such games and present strategy and computational complexity results. For strategy
    complexity, we show that lexicographically optimal strategies exist that are deterministic
    and memory is only required to remember the already satisfied and violated objectives.
    For a constant number of objectives, we show that the relevant decision problem
    is in   NP∩coNP , matching the current known bound for single objectives; and
    in general the decision problem is   PSPACE -hard and can be solved in   NEXPTIME∩coNEXPTIME
    . We present an algorithm that computes the lexicographically optimal strategies
    via a reduction to computation of optimal strategies in a sequence of single-objectives
    games. We have implemented our algorithm and report experimental results on various
    case studies.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Joost P
  full_name: Katoen, Joost P
  id: 4524F760-F248-11E8-B48F-1D18A9856A87
  last_name: Katoen
  orcid: 0000-0002-6143-1926
- first_name: Maximilian
  full_name: Weininger, Maximilian
  last_name: Weininger
- first_name: Tobias
  full_name: Winkler, Tobias
  last_name: Winkler
citation:
  ama: 'Chatterjee K, Katoen JP, Weininger M, Winkler T. Stochastic games with lexicographic
    reachability-safety objectives. In: <i>International Conference on Computer Aided
    Verification</i>. Vol 12225. Springer Nature; 2020:398-420. doi:<a href="https://doi.org/10.1007/978-3-030-53291-8_21">10.1007/978-3-030-53291-8_21</a>'
  apa: Chatterjee, K., Katoen, J. P., Weininger, M., &#38; Winkler, T. (2020). Stochastic
    games with lexicographic reachability-safety objectives. In <i>International Conference
    on Computer Aided Verification</i> (Vol. 12225, pp. 398–420). Springer Nature.
    <a href="https://doi.org/10.1007/978-3-030-53291-8_21">https://doi.org/10.1007/978-3-030-53291-8_21</a>
  chicago: Chatterjee, Krishnendu, Joost P Katoen, Maximilian Weininger, and Tobias
    Winkler. “Stochastic Games with Lexicographic Reachability-Safety Objectives.”
    In <i>International Conference on Computer Aided Verification</i>, 12225:398–420.
    Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-53291-8_21">https://doi.org/10.1007/978-3-030-53291-8_21</a>.
  ieee: K. Chatterjee, J. P. Katoen, M. Weininger, and T. Winkler, “Stochastic games
    with lexicographic reachability-safety objectives,” in <i>International Conference
    on Computer Aided Verification</i>, 2020, vol. 12225, pp. 398–420.
  ista: 'Chatterjee K, Katoen JP, Weininger M, Winkler T. 2020. Stochastic games with
    lexicographic reachability-safety objectives. International Conference on Computer
    Aided Verification. CAV: Computer Aided Verification, LNCS, vol. 12225, 398–420.'
  mla: Chatterjee, Krishnendu, et al. “Stochastic Games with Lexicographic Reachability-Safety
    Objectives.” <i>International Conference on Computer Aided Verification</i>, vol.
    12225, Springer Nature, 2020, pp. 398–420, doi:<a href="https://doi.org/10.1007/978-3-030-53291-8_21">10.1007/978-3-030-53291-8_21</a>.
  short: K. Chatterjee, J.P. Katoen, M. Weininger, T. Winkler, in:, International
    Conference on Computer Aided Verification, Springer Nature, 2020, pp. 398–420.
conference:
  name: 'CAV: Computer Aided Verification'
date_created: 2020-08-16T22:00:58Z
date_published: 2020-07-14T00:00:00Z
date_updated: 2026-04-16T09:31:14Z
day: '14'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-030-53291-8_21
ec_funded: 1
external_id:
  arxiv:
  - '2005.04018'
  isi:
  - '000695272500021'
file:
- access_level: open_access
  checksum: 093d4788d7d5b2ce0ffe64fbe7820043
  content_type: application/pdf
  creator: dernst
  date_created: 2020-08-17T11:32:44Z
  date_updated: 2020-08-17T11:32:44Z
  file_id: '8276'
  file_name: 2020_LNCS_CAV_Chatterjee.pdf
  file_size: 625056
  relation: main_file
  success: 1
file_date_updated: 2020-08-17T11:32:44Z
has_accepted_license: '1'
intvolume: '     12225'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 398-420
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 25892FC0-B435-11E9-9278-68D0E5697425
  grant_number: ICT15-003
  name: Efficient Algorithms for Computer Aided Verification
publication: International Conference on Computer Aided Verification
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030532901'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '12738'
    relation: later_version
    status: public
scopus_import: '1'
status: public
title: Stochastic games with lexicographic reachability-safety objectives
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12225
year: '2020'
...
---
_id: '8322'
abstract:
- lang: eng
  text: "Reverse firewalls were introduced at Eurocrypt 2015 by Miro-nov and Stephens-Davidowitz,
    as a method for protecting cryptographic protocols against attacks on the devices
    of the honest parties. In a nutshell: a reverse firewall is placed outside of
    a device and its goal is to “sanitize” the messages sent by it, in such a way
    that a malicious device cannot leak its secrets to the outside world. It is typically
    assumed that the cryptographic devices are attacked in a “functionality-preserving
    way” (i.e. informally speaking, the functionality of the protocol remains unchanged
    under this attacks). In their paper, Mironov and Stephens-Davidowitz construct
    a protocol for passively-secure two-party computations with firewalls, leaving
    extension of this result to stronger models as an open question.\r\nIn this paper,
    we address this problem by constructing a protocol for secure computation with
    firewalls that has two main advantages over the original protocol from Eurocrypt
    2015. Firstly, it is a multiparty computation protocol (i.e. it works for an arbitrary
    number n of the parties, and not just for 2). Secondly, it is secure in much stronger
    corruption settings, namely in the active corruption model. More precisely: we
    consider an adversary that can fully corrupt up to \U0001D45B−1 parties, while
    the remaining parties are corrupt in a functionality-preserving way.\r\nOur core
    techniques are: malleable commitments and malleable non-interactive zero-knowledge,
    which in particular allow us to create a novel protocol for multiparty augmented
    coin-tossing into the well with reverse firewalls (that is based on a protocol
    of Lindell from Crypto 2001)."
acknowledgement: We would like to thank the anonymous reviewers for their helpful
  comments and suggestions. The work was initiated while the first author was in IIT
  Madras, India. Part of this work was done while the author was visiting the University
  of Warsaw. This project has received funding from the European Research Council
  (ERC) under the European Union’s Horizon 2020 research and innovation programme
  (682815 - TOCNeT) and from the Foundation for Polish Science under grant TEAM/2016-1/4
  founded within the UE 2014–2020 Smart Growth Operational Program. The last author
  was supported by the Independent Research Fund Denmark project BETHE and the Concordium
  Blockchain Research Center, Aarhus University, Denmark.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Suvradip
  full_name: Chakraborty, Suvradip
  id: B9CD0494-D033-11E9-B219-A439E6697425
  last_name: Chakraborty
- first_name: Stefan
  full_name: Dziembowski, Stefan
  last_name: Dziembowski
- first_name: Jesper Buus
  full_name: Nielsen, Jesper Buus
  last_name: Nielsen
citation:
  ama: 'Chakraborty S, Dziembowski S, Nielsen JB. Reverse firewalls for actively secure MPCs.
    In: <i>Advances in Cryptology – CRYPTO 2020</i>. Vol 12171. Springer Nature; 2020:732-762.
    doi:<a href="https://doi.org/10.1007/978-3-030-56880-1_26">10.1007/978-3-030-56880-1_26</a>'
  apa: 'Chakraborty, S., Dziembowski, S., &#38; Nielsen, J. B. (2020). Reverse firewalls for actively secure MPCs.
    In <i>Advances in Cryptology – CRYPTO 2020</i> (Vol. 12171, pp. 732–762). Santa
    Barbara, CA, United States: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-56880-1_26">https://doi.org/10.1007/978-3-030-56880-1_26</a>'
  chicago: Chakraborty, Suvradip, Stefan Dziembowski, and Jesper Buus Nielsen. “Reverse Firewalls for Actively Secure MPCs.”
    In <i>Advances in Cryptology – CRYPTO 2020</i>, 12171:732–62. Springer Nature,
    2020. <a href="https://doi.org/10.1007/978-3-030-56880-1_26">https://doi.org/10.1007/978-3-030-56880-1_26</a>.
  ieee: S. Chakraborty, S. Dziembowski, and J. B. Nielsen, “Reverse firewalls for actively secure MPCs,”
    in <i>Advances in Cryptology – CRYPTO 2020</i>, Santa Barbara, CA, United States,
    2020, vol. 12171, pp. 732–762.
  ista: 'Chakraborty S, Dziembowski S, Nielsen JB. 2020. Reverse firewalls for actively secure MPCs.
    Advances in Cryptology – CRYPTO 2020. CRYPTO: Annual International Cryptology
    Conference, LNCS, vol. 12171, 732–762.'
  mla: Chakraborty, Suvradip, et al. “Reverse Firewalls for Actively Secure MPCs.”
    <i>Advances in Cryptology – CRYPTO 2020</i>, vol. 12171, Springer Nature, 2020,
    pp. 732–62, doi:<a href="https://doi.org/10.1007/978-3-030-56880-1_26">10.1007/978-3-030-56880-1_26</a>.
  short: S. Chakraborty, S. Dziembowski, J.B. Nielsen, in:, Advances in Cryptology
    – CRYPTO 2020, Springer Nature, 2020, pp. 732–762.
conference:
  end_date: 2020-08-21
  location: Santa Barbara, CA, United States
  name: 'CRYPTO: Annual International Cryptology Conference'
  start_date: 2020-08-17
date_created: 2020-08-30T22:01:12Z
date_published: 2020-08-10T00:00:00Z
date_updated: 2026-04-16T09:31:34Z
day: '10'
department:
- _id: KrPi
doi: 10.1007/978-3-030-56880-1_26
ec_funded: 1
external_id:
  isi:
  - '001415325700026'
intvolume: '     12171'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2019/1317
month: '08'
oa: 1
oa_version: Preprint
page: 732-762
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: Advances in Cryptology – CRYPTO 2020
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030568795'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reverse firewalls for actively secure MPCs
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12171
year: '2020'
...
---
_id: '8339'
abstract:
- lang: eng
  text: "Discrete Gaussian distributions over lattices are central to lattice-based
    cryptography, and to the computational and mathematical aspects of lattices more
    broadly. The literature contains a wealth of useful theorems about the behavior
    of discrete Gaussians under convolutions and related operations. Yet despite their
    structural similarities, most of these theorems are formally incomparable, and
    their proofs tend to be monolithic and written nearly “from scratch,” making them
    unnecessarily hard to verify, understand, and extend.\r\nIn this work we present
    a modular framework for analyzing linear operations on discrete Gaussian distributions.
    The framework abstracts away the particulars of Gaussians, and usually reduces
    proofs to the choice of appropriate linear transformations and elementary linear
    algebra. To showcase the approach, we establish several general properties of
    discrete Gaussians, and show how to obtain all prior convolution theorems (along
    with some new ones) as straightforward corollaries. As another application, we
    describe a self-reduction for Learning With Errors (LWE) that uses a fixed number
    of samples to generate an unlimited number of additional ones (having somewhat
    larger error). The distinguishing features of our reduction are its simple analysis
    in our framework, and its exclusive use of discrete Gaussians without any loss
    in parameters relative to a prior mixed discrete-and-continuous approach.\r\nAs
    a contribution of independent interest, for subgaussian random matrices we prove
    a singular value concentration bound with explicitly stated constants, and we
    give tighter heuristics for specific distributions that are commonly used for
    generating lattice trapdoors. These bounds yield improvements in the concrete
    bit-security estimates for trapdoor lattice cryptosystems."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Nicholas
  full_name: Genise, Nicholas
  last_name: Genise
- first_name: Daniele
  full_name: Micciancio, Daniele
  last_name: Micciancio
- first_name: Chris
  full_name: Peikert, Chris
  last_name: Peikert
- first_name: Michael
  full_name: Walter, Michael
  id: 488F98B0-F248-11E8-B48F-1D18A9856A87
  last_name: Walter
  orcid: 0000-0003-3186-2482
citation:
  ama: 'Genise N, Micciancio D, Peikert C, Walter M. Improved discrete Gaussian and
    subgaussian analysis for lattice cryptography. In: <i>23rd IACR International
    Conference on the Practice and Theory of Public-Key Cryptography</i>. Vol 12110.
    Springer Nature; 2020:623-651. doi:<a href="https://doi.org/10.1007/978-3-030-45374-9_21">10.1007/978-3-030-45374-9_21</a>'
  apa: 'Genise, N., Micciancio, D., Peikert, C., &#38; Walter, M. (2020). Improved
    discrete Gaussian and subgaussian analysis for lattice cryptography. In <i>23rd
    IACR International Conference on the Practice and Theory of Public-Key Cryptography</i>
    (Vol. 12110, pp. 623–651). Edinburgh, United Kingdom: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-45374-9_21">https://doi.org/10.1007/978-3-030-45374-9_21</a>'
  chicago: Genise, Nicholas, Daniele Micciancio, Chris Peikert, and Michael Walter.
    “Improved Discrete Gaussian and Subgaussian Analysis for Lattice Cryptography.”
    In <i>23rd IACR International Conference on the Practice and Theory of Public-Key
    Cryptography</i>, 12110:623–51. Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-45374-9_21">https://doi.org/10.1007/978-3-030-45374-9_21</a>.
  ieee: N. Genise, D. Micciancio, C. Peikert, and M. Walter, “Improved discrete Gaussian
    and subgaussian analysis for lattice cryptography,” in <i>23rd IACR International
    Conference on the Practice and Theory of Public-Key Cryptography</i>, Edinburgh,
    United Kingdom, 2020, vol. 12110, pp. 623–651.
  ista: 'Genise N, Micciancio D, Peikert C, Walter M. 2020. Improved discrete Gaussian
    and subgaussian analysis for lattice cryptography. 23rd IACR International Conference
    on the Practice and Theory of Public-Key Cryptography. PKC: Public-Key Cryptography,
    LNCS, vol. 12110, 623–651.'
  mla: Genise, Nicholas, et al. “Improved Discrete Gaussian and Subgaussian Analysis
    for Lattice Cryptography.” <i>23rd IACR International Conference on the Practice
    and Theory of Public-Key Cryptography</i>, vol. 12110, Springer Nature, 2020,
    pp. 623–51, doi:<a href="https://doi.org/10.1007/978-3-030-45374-9_21">10.1007/978-3-030-45374-9_21</a>.
  short: N. Genise, D. Micciancio, C. Peikert, M. Walter, in:, 23rd IACR International
    Conference on the Practice and Theory of Public-Key Cryptography, Springer Nature,
    2020, pp. 623–651.
conference:
  end_date: 2020-05-07
  location: Edinburgh, United Kingdom
  name: 'PKC: Public-Key Cryptography'
  start_date: 2020-05-04
date_created: 2020-09-06T22:01:13Z
date_published: 2020-05-15T00:00:00Z
date_updated: 2026-04-16T09:32:27Z
day: '15'
department:
- _id: KrPi
doi: 10.1007/978-3-030-45374-9_21
ec_funded: 1
external_id:
  isi:
  - '001299210200021'
intvolume: '     12110'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2020/337
month: '05'
oa: 1
oa_version: Preprint
page: 623-651
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: 23rd IACR International Conference on the Practice and Theory of Public-Key
  Cryptography
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030453732'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Improved discrete Gaussian and subgaussian analysis for lattice cryptography
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12110
year: '2020'
...
---
_id: '8623'
abstract:
- lang: eng
  text: We introduce the monitoring of trace properties under assumptions. An assumption
    limits the space of possible traces that the monitor may encounter. An assumption
    may result from knowledge about the system that is being monitored, about the
    environment, or about another, connected monitor. We define monitorability under
    assumptions and study its theoretical properties. In particular, we show that
    for every assumption A, the boolean combinations of properties that are safe or
    co-safe relative to A are monitorable under A. We give several examples and constructions
    on how an assumption can make a non-monitorable property monitorable, and how
    an assumption can make a monitorable property monitorable with fewer resources,
    such as integer registers.
acknowledgement: This research was supported in part by the Austrian Science Fund
  (FWF) under grant Z211-N23 (Wittgenstein Award).
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Naci E
  full_name: Sarac, Naci E
  id: 8C6B42F8-C8E6-11E9-A03A-F2DCE5697425
  last_name: Sarac
citation:
  ama: 'Henzinger TA, Sarac NE. Monitorability under assumptions. In: <i>Runtime Verification</i>.
    Vol 12399. Springer Nature; 2020:3-18. doi:<a href="https://doi.org/10.1007/978-3-030-60508-7_1">10.1007/978-3-030-60508-7_1</a>'
  apa: 'Henzinger, T. A., &#38; Sarac, N. E. (2020). Monitorability under assumptions.
    In <i>Runtime Verification</i> (Vol. 12399, pp. 3–18). Los Angeles, CA, United
    States: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-60508-7_1">https://doi.org/10.1007/978-3-030-60508-7_1</a>'
  chicago: Henzinger, Thomas A, and Naci E Sarac. “Monitorability under Assumptions.”
    In <i>Runtime Verification</i>, 12399:3–18. Springer Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-60508-7_1">https://doi.org/10.1007/978-3-030-60508-7_1</a>.
  ieee: T. A. Henzinger and N. E. Sarac, “Monitorability under assumptions,” in <i>Runtime
    Verification</i>, Los Angeles, CA, United States, 2020, vol. 12399, pp. 3–18.
  ista: 'Henzinger TA, Sarac NE. 2020. Monitorability under assumptions. Runtime Verification.
    RV: Runtime Verification, LNCS, vol. 12399, 3–18.'
  mla: Henzinger, Thomas A., and Naci E. Sarac. “Monitorability under Assumptions.”
    <i>Runtime Verification</i>, vol. 12399, Springer Nature, 2020, pp. 3–18, doi:<a
    href="https://doi.org/10.1007/978-3-030-60508-7_1">10.1007/978-3-030-60508-7_1</a>.
  short: T.A. Henzinger, N.E. Sarac, in:, Runtime Verification, Springer Nature, 2020,
    pp. 3–18.
conference:
  end_date: 2020-10-09
  location: Los Angeles, CA, United States
  name: 'RV: Runtime Verification'
  start_date: 2020-10-06
date_created: 2020-10-07T15:05:37Z
date_published: 2020-10-02T00:00:00Z
date_updated: 2026-04-16T10:22:01Z
day: '02'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-030-60508-7_1
external_id:
  isi:
  - '000728160600001'
file:
- access_level: open_access
  checksum: 00661f9b7034f52e18bf24fa552b8194
  content_type: application/pdf
  creator: esarac
  date_created: 2020-10-15T14:28:06Z
  date_updated: 2020-10-15T14:28:06Z
  file_id: '8665'
  file_name: monitorability.pdf
  file_size: 478148
  relation: main_file
  success: 1
file_date_updated: 2020-10-15T14:28:06Z
has_accepted_license: '1'
intvolume: '     12399'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Submitted Version
page: 3-18
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Runtime Verification
publication_identifier:
  eisbn:
  - '9783030605087'
  eissn:
  - 1611-3349
  isbn:
  - '9783030605070'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Monitorability under assumptions
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12399
year: '2020'
...
---
_id: '8732'
abstract:
- lang: eng
  text: 'A simple drawing D(G) of a graph G is one where each pair of edges share
    at most one point: either a common endpoint or a proper crossing. An edge e in
    the complement of G can be inserted into D(G) if there exists a simple drawing
    of   G+e  extending D(G). As a result of Levi’s Enlargement Lemma, if a drawing
    is rectilinear (pseudolinear), that is, the edges can be extended into an arrangement
    of lines (pseudolines), then any edge in the complement of G can be inserted.
    In contrast, we show that it is   NP -complete to decide whether one edge can
    be inserted into a simple drawing. This remains true even if we assume that the
    drawing is pseudocircular, that is, the edges can be extended to an arrangement
    of pseudocircles. On the positive side, we show that, given an arrangement of
    pseudocircles   A  and a pseudosegment   σ , it can be decided in polynomial time
    whether there exists a pseudocircle   Φσ  extending   σ  for which   A∪{Φσ}  is
    again an arrangement of pseudocircles.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Alan M
  full_name: Arroyo Guevara, Alan M
  id: 3207FDC6-F248-11E8-B48F-1D18A9856A87
  last_name: Arroyo Guevara
  orcid: 0000-0003-2401-8670
- first_name: Fabian
  full_name: Klute, Fabian
  last_name: Klute
- first_name: Irene
  full_name: Parada, Irene
  last_name: Parada
- first_name: Raimund
  full_name: Seidel, Raimund
  last_name: Seidel
- first_name: Birgit
  full_name: Vogtenhuber, Birgit
  last_name: Vogtenhuber
- first_name: Tilo
  full_name: Wiedera, Tilo
  last_name: Wiedera
citation:
  ama: 'Arroyo Guevara AM, Klute F, Parada I, Seidel R, Vogtenhuber B, Wiedera T.
    Inserting one edge into a simple drawing is hard. In: <i>Graph-Theoretic Concepts
    in Computer Science</i>. Vol 12301. Springer Nature; 2020:325-338. doi:<a href="https://doi.org/10.1007/978-3-030-60440-0_26">10.1007/978-3-030-60440-0_26</a>'
  apa: 'Arroyo Guevara, A. M., Klute, F., Parada, I., Seidel, R., Vogtenhuber, B.,
    &#38; Wiedera, T. (2020). Inserting one edge into a simple drawing is hard. In
    <i>Graph-Theoretic Concepts in Computer Science</i> (Vol. 12301, pp. 325–338).
    Leeds, United Kingdom: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-60440-0_26">https://doi.org/10.1007/978-3-030-60440-0_26</a>'
  chicago: Arroyo Guevara, Alan M, Fabian Klute, Irene Parada, Raimund Seidel, Birgit
    Vogtenhuber, and Tilo Wiedera. “Inserting One Edge into a Simple Drawing Is Hard.”
    In <i>Graph-Theoretic Concepts in Computer Science</i>, 12301:325–38. Springer
    Nature, 2020. <a href="https://doi.org/10.1007/978-3-030-60440-0_26">https://doi.org/10.1007/978-3-030-60440-0_26</a>.
  ieee: A. M. Arroyo Guevara, F. Klute, I. Parada, R. Seidel, B. Vogtenhuber, and
    T. Wiedera, “Inserting one edge into a simple drawing is hard,” in <i>Graph-Theoretic
    Concepts in Computer Science</i>, Leeds, United Kingdom, 2020, vol. 12301, pp.
    325–338.
  ista: 'Arroyo Guevara AM, Klute F, Parada I, Seidel R, Vogtenhuber B, Wiedera T.
    2020. Inserting one edge into a simple drawing is hard. Graph-Theoretic Concepts
    in Computer Science. WG: Workshop on Graph-Theoretic Concepts in Computer Science,
    LNCS, vol. 12301, 325–338.'
  mla: Arroyo Guevara, Alan M., et al. “Inserting One Edge into a Simple Drawing Is
    Hard.” <i>Graph-Theoretic Concepts in Computer Science</i>, vol. 12301, Springer
    Nature, 2020, pp. 325–38, doi:<a href="https://doi.org/10.1007/978-3-030-60440-0_26">10.1007/978-3-030-60440-0_26</a>.
  short: A.M. Arroyo Guevara, F. Klute, I. Parada, R. Seidel, B. Vogtenhuber, T. Wiedera,
    in:, Graph-Theoretic Concepts in Computer Science, Springer Nature, 2020, pp.
    325–338.
conference:
  end_date: 2020-06-26
  location: Leeds, United Kingdom
  name: 'WG: Workshop on Graph-Theoretic Concepts in Computer Science'
  start_date: 2020-06-24
date_created: 2020-11-06T08:45:03Z
date_published: 2020-10-09T00:00:00Z
date_updated: 2026-04-16T10:22:35Z
day: '09'
department:
- _id: UlWa
doi: 10.1007/978-3-030-60440-0_26
ec_funded: 1
external_id:
  isi:
  - '001299688100026'
intvolume: '     12301'
isi: 1
language:
- iso: eng
month: '10'
oa_version: None
page: 325-338
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: Graph-Theoretic Concepts in Computer Science
publication_identifier:
  eisbn:
  - '9783030604400'
  eissn:
  - 1611-3349
  isbn:
  - '9783030604394'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Inserting one edge into a simple drawing is hard
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 12301
year: '2020'
...
