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Employment (3)

Zama: Paris, FR

2023-04-03 to present | Principal Researcher (Labs)
Employment
Source: Self-asserted source
Olivier BERNARD

Thales: Gennevilliers, FR

2014-08-01 to 2023-03-31 | Cryptology Research Engineer
Employment
Source: Self-asserted source
Olivier BERNARD

Université de Rennes 1: Rennes, FR

2019-02-01 to 2022-06-30 | Research Engineer, PhD (Univ Rennes, CNRS, IRISA)
Employment
Source: Self-asserted source
Olivier BERNARD

Education and qualifications (2)

Université Rennes 1: Rennes, FR

2019-02-01 to 2022-06-13 | PhD (ED 601, Mathématiques et Sciences et Technologies de l’Information et de la Communication)
Education
Source: Self-asserted source
Olivier BERNARD

École Normale Supérieure: Paris, FR

2008-09-01 to 2011-08-31 (Mathématiques & Applications, Informatique)
Education
Source: Self-asserted source
Olivier BERNARD

Works (13)

Extended External Products of Ciphertexts with Automorphisms and Applications

(To appear in) FHE.org 2025, Sofia, Bulgaria
2025-03-25 | Conference poster
Part of OTHER-ID: ePrint:2025/163
Contributors: Olivier BERNARD; Marc Joye
Source: Self-asserted source
Olivier BERNARD

Bootstrapping (T)FHE Ciphertexts via Automorphisms: Closing the Gap Between Binary and Gaussian Keys

2025-02-04 | Preprint
OTHER-ID: ePrint:2025/163
Contributors: Olivier BERNARD; Marc Joye
Source: Self-asserted source
Olivier BERNARD

Drifting Towards Better Error Probabilities in Fully Homomorphic Encryption Schemes

To appear in Advances in Cryptology – EUROCRYPT 2025
2024-10-21 | Conference proceedings
OTHER-ID: ePrint:2024/1718
Contributors: Olivier BERNARD; Marc Joye; Nigel P. Smart; Michael Walter
Source: Self-asserted source
Olivier BERNARD

Approximate CRT-Based Gadget Decomposition for Fully Homomorphic Encryption

2024-06-08 | Preprint
OTHER-ID: eprint:2024/909
Contributors: Olivier BERNARD; Marc Joye
Source: Self-asserted source
Olivier BERNARD

Homomorphic Integer Division for TFHE

FHE.org 2024, Toronto, Canada
2024-03-24 | Conference poster
Contributors: Olivier BERNARD; Amit Deo; Marc Joye
Source: Self-asserted source
Olivier BERNARD

Computing e-th roots in number fields

2024 Proceedings of the Symposium on Algorithm Engineering and Experiments (ALENEX)
2024-01 | Book chapter
DOI: 10.1137/1.9781611977929.16
Part of ISBN: 978-1-61197-792-9
Version of ARXIV: 2305.17425
Contributors: Olivier Bernard; Pierre-Alain Fouque; Andrea Lesavourey
Source: Self-asserted source
Olivier BERNARD

A short basis of the Stickelberger ideal of a cyclotomic field

Mathematics of Computation
2023-08-09 | Journal article
DOI: 10.1090/mcom/3863
Part of ISSN: 0025-5718
Part of ISSN: 1088-6842
Version of ARXIV: 2109.13329
Contributors: Olivier BERNARD; Radan Kučera
Source: Self-asserted source
Olivier BERNARD

Log-S-unit Lattices Using Explicit Stickelberger Generators to Solve Approx Ideal-SVP

Advances in Cryptology – ASIACRYPT 2022
2022 | Book chapter | Author
DOI: 10.1007/978-3-031-22969-5_23
Part of ISBN: 9783031229688
Part of ISBN: 9783031229695
Part of ISSN: 0302-9743
Part of ISSN: 1611-3349
Version of OTHER-ID: ePrint:2021/1384
Version of HAL: hal-04028180
Contributors: Olivier BERNARD; Andrea Lesavourey; Tuong-Huy Nguyen; Adeline Roux-Langlois
Source: Self-asserted source
Olivier BERNARD

Algebraic Cryptanalysis of the Shortest Vector Problem in Ideal Lattices

2022-06-13 | Dissertation or Thesis
HAL: tel-03888247
OTHER-ID: NNT:2022REN1S037
Contributors: Olivier BERNARD
Source: Self-asserted source
Olivier BERNARD

Twisted-PHS: Using the Product Formula to Solve Approx-SVP in Ideal Lattices

Advances in Cryptology – ASIACRYPT 2020
2020 | Book chapter
DOI: 10.1007/978-3-030-64834-3_12
Part of ISBN: 9783030648336
Part of ISBN: 9783030648343
Part of ISSN: 0302-9743
Part of ISSN: 1611-3349
Version of OTHER-ID: eprint:2020/1081
Version of HAL: hal-03038124
Contributors: Olivier BERNARD; Adeline ROUX-LANGLOIS
Source: Self-asserted source
Olivier BERNARD

No Such Thing as a Small Leak: Leakage-Abuse Attacks Against Symmetric Searchable Encryption

E-Business and Telecommunications
2019 | Book chapter
DOI: 10.1007/978-3-030-11039-0_12
Part of ISBN: 9783030110383
Part of ISBN: 9783030110390
Part of ISSN: 1865-0929
Part of ISSN: 1865-0937
HAL: hal-01990354
Contributors: Alexandre ANZALA-YAMAJAKO; Olivier BERNARD; Matthieu GIRAUD; Pascal LAFOURCADE
Source: Self-asserted source
Olivier BERNARD

Efficient Four-Dimensional GLV Curve with High Security

2018-04-03 | Preprint
OTHER-ID: ePrint:2018/305
Contributors: Olivier BERNARD; Renaud DUBOIS; Simon MASSON
Source: Self-asserted source
Olivier BERNARD

Practical Passive Leakage-abuse Attacks Against Symmetric Searchable Encryption

Proceedings of the 14th International Joint Conference on e-Business and Telecommunications – SECRYPT 2017
2017 | Book chapter
DOI: 10.5220/0006461202000211
HAL: hal-01689780
Part of ISBN: 978-989-758-259-2
Part of ISSN: 2184-2825
OTHER-ID: ePrint:2017/046
Contributors: Matthieu GIRAUD; Alexandre ANZALA-YAMAJAKO; Olivier BERNARD; Pascal LAFOURCADE
Source: Self-asserted source
Olivier BERNARD
How many people are using ORCID?