Guilhem Castagnos

40 papers A* 2A 1B 2C 3Misc 2Journal 20Unranked 9
YearRankTypeTitle / Venue / Authors
2025 J jnl
An Improved Threshold Homomorphic Cryptosystem Based on Class Groups.
Cryptogr. Commun.
Lennart Braun, Guilhem Castagnos, Ivan Damgård, Fabien Laguillaumie, Kelsey Melissaris, Claudio Orlandi, Ida Tucker
2025 J jnl
Efficient Succinct Zero-Knowledge Arguments in the CL Framework.
J. Cryptol.
Agathe Beaugrand, Guilhem Castagnos, Fabien Laguillaumie
2024 — conf
An Improved Threshold Homomorphic Cryptosystem Based on Class Groups.
SCN (2)
Lennart Braun, Guilhem Castagnos, Ivan Damgård, Fabien Laguillaumie, Kelsey Melissaris, Claudio Orlandi, Ida Tucker
2024 J jnl
An Improved Threshold Homomorphic Cryptosystem Based on Class Groups.
IACR Cryptol. ePrint Arch.
Lennart Braun, Guilhem Castagnos, Ivan Damgård, Fabien Laguillaumie, Kelsey Melissaris, Claudio Orlandi, Ida Tucker
2024 J jnl
Efficient Succinct Zero-Knowledge Arguments in the CL Framework.
IACR Cryptol. ePrint Arch.
Agathe Beaugrand, Guilhem Castagnos, Fabien Laguillaumie
2023 J jnl
Bandwidth-efficient threshold EC-DSA revisited: Online/offline extensions, identifiable aborts proactive and adaptive security.
Theor. Comput. Sci.
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2023 J jnl
I Want to Ride My BICYCL : BICYCL Implements CryptographY in CLass Groups.
J. Cryptol.
Cyril Bouvier, Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie
2023 — conf
Pattern Matching in Encrypted Stream from Inner Product Encryption.
Public Key Cryptography (1)
Elie Bouscatié, Guilhem Castagnos, Olivier Sanders
2022 J jnl
A tighter proof for CCA secure inner product functional encryption: Genericity meets efficiency.
Theor. Comput. Sci.
Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker
2022 J jnl
I want to ride my BICYCL: BICYCL Implements CryptographY in CLass groups.
IACR Cryptol. ePrint Arch.
Cyril Bouvier, Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie
2022 J jnl
Pattern Matching in Encrypted Stream from Inner Product Encryption.
IACR Cryptol. ePrint Arch.
Elie Bouscatié, Guilhem Castagnos, Olivier Sanders
2022 J jnl
Threshold Linearly Homomorphic Encryption on $\mathbf{Z}/2^k\mathbf{Z}$.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker
2022 — conf
Threshold Linearly Homomorphic Encryption on bfZ/2
ASIACRYPT (2)
Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker
2021 J jnl
Bandwidth-efficient threshold EC-DSA revisited: Online/Offline Extensions, Identifiable Aborts, Proactivity and Adaptive Security.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2021 A* conf
Efficient CCA Timed Commitments in Class Groups.
CCS
Sri Aravinda Krishnan Thyagarajan, Guilhem Castagnos, Fabien Laguillaumie, Giulio Malavolta
2021 J jnl
Efficient CCA Timed Commitments in Class Groups.
IACR Cryptol. ePrint Arch.
Sri Aravinda Krishnan Thyagarajan, Guilhem Castagnos, Fabien Laguillaumie, Giulio Malavolta
2021 — conf
Public Key Encryption with Flexible Pattern Matching.
ASIACRYPT (4)
Elie Bouscatié, Guilhem Castagnos, Olivier Sanders
2021 J jnl
Public Key Encryption with Flexible Pattern Matching.
IACR Cryptol. ePrint Arch.
Elie Bouscatié, Guilhem Castagnos, Olivier Sanders
2020 — conf
Bandwidth-Efficient Threshold EC-DSA.
Public Key Cryptography (2)
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2020 J jnl
Bandwidth-efficient threshold EC-DSA.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2019 — book
Cryptography based on quadratic fields: cryptanalyses, primitives and protocols. (Cryptographie basée sur les corps quadratiques : cryptanalyses, primitives et protocoles).
Guilhem Castagnos
2019 — conf
Two-Party ECDSA from Hash Proof Systems and Efficient Instantiations.
CRYPTO (3)
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2019 J jnl
Two-Party ECDSA from Hash Proof Systems and Efficient Instantiations.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker
2018 — conf
Practical Fully Secure Unrestricted Inner Product Functional Encryption Modulo p.
ASIACRYPT (2)
Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker
2018 J jnl
Practical Fully Secure Unrestricted Inner Product Functional Encryption modulo p.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker
2017 — conf
Encryption Switching Protocols Revisited: Switching Modulo p.
CRYPTO (1)
Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie
2017 J jnl
Encryption Switching Protocols Revisited: Switching modulo p.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie
2015 B conf
Linearly Homomorphic Encryption from $$\mathsf {DDH}$$.
CT-RSA
Guilhem Castagnos, Fabien Laguillaumie
2015 J jnl
Linearly Homomorphic Encryption from DDH.
IACR Cryptol. ePrint Arch.
Guilhem Castagnos, Fabien Laguillaumie
2013 C conf
High-order Masking by Using Coding Theory and Its Application to AES.
IMACC
Guilhem Castagnos, Soline Renner, Gilles Zémor
2012 Misc conf
Homomorphic Encryption for Multiplications and Pairing Evaluation.
SCN
Guilhem Castagnos, Fabien Laguillaumie
2009 A conf
Factoring
ASIACRYPT
Guilhem Castagnos, Antoine Joux, Fabien Laguillaumie, Phong Q. Nguyen
2009 — conf
Fault Analysis of Grain-128.
HOST
Guilhem Castagnos, Alexandre Berzati, Cécile Canovas, Blandine Debraize, Louis Goubin, Aline Gouget, Pascal Paillier, Stephanie Salgado
2009 A* conf
On the Security of Cryptosystems with Quadratic Decryption: The Nicest Cryptanalysis.
EUROCRYPT
Guilhem Castagnos, Fabien Laguillaumie
2008 B conf
Lattice-based homomorphic encryption of vector spaces.
ISIT
Carlos Aguilar Melchor, Guilhem Castagnos, Philippe Gaborit
2008 Misc conf
Two Generic Constructions of Probabilistic Cryptosystems and Their Applications.
SCN
Guilhem Castagnos
2007 J jnl
An efficient probabilistic public-key cryptosystem over quadratic fields quotients.
Finite Fields Their Appl.
Guilhem Castagnos
2007 C conf
Towards a DL-Based Additively Homomorphic Encryption Scheme.
ISC
Guilhem Castagnos, Benoît Chevallier-Mames
2007 C conf
Trapdoor Permutation Polynomials of Z/
ISC
Guilhem Castagnos, Damien Vergnaud
2003 J jnl
What do DES S-boxes Say to Each Other ?
IACR Cryptol. ePrint Arch.
Nicolas T. Courtois, Guilhem Castagnos, Louis Goubin