Guilhem Castagnos

According to our database, Guilhem Castagnos authored at least 27 papers between 2003 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2023

I Want to Ride My BICYCL : BICYCL Implements CryptographY in CLass Groups.

Cyril Bouvier, Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie

J. Cryptol., July, 2023

Bandwidth-efficient threshold EC-DSA revisited: Online/offline extensions, identifiable aborts proactive and adaptive security.

Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker

Theor. Comput. Sci., 2023

2022

A tighter proof for CCA secure inner product functional encryption: Genericity meets efficiency.

Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker

Theor. Comput. Sci., 2022

Threshold Linearly Homomorphic Encryption on $\mathbf{Z}/2^k\mathbf{Z}$.

Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker

IACR Cryptol. ePrint Arch., 2022

Pattern Matching in Encrypted Stream from Inner Product Encryption.

Elie Bouscatié, Guilhem Castagnos, Olivier Sanders

IACR Cryptol. ePrint Arch., 2022

Threshold Linearly Homomorphic Encryption on bfZ/2^kbfZ.

Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker

Proceedings of the Advances in Cryptology - ASIACRYPT 2022, 2022

2021

Efficient CCA Timed Commitments in Class Groups.

Sri Aravinda Krishnan Thyagarajan, Guilhem Castagnos, Fabien Laguillaumie, Giulio Malavolta

IACR Cryptol. ePrint Arch., 2021

Bandwidth-efficient threshold EC-DSA revisited: Online/Offline Extensions, Identifiable Aborts, Proactivity and Adaptive Security.

Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker

IACR Cryptol. ePrint Arch., 2021

Public Key Encryption with Flexible Pattern Matching.

Elie Bouscatié, Guilhem Castagnos, Olivier Sanders

IACR Cryptol. ePrint Arch., 2021

2020

Bandwidth-efficient threshold EC-DSA.

Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker

IACR Cryptol. ePrint Arch., 2020

2019

Two-Party ECDSA from Hash Proof Systems and Efficient Instantiations.

Guilhem Castagnos, Dario Catalano, Fabien Laguillaumie, Federico Savasta, Ida Tucker

IACR Cryptol. ePrint Arch., 2019

Cryptography based on quadratic fields: cryptanalyses, primitives and protocols. (Cryptographie basée sur les corps quadratiques : cryptanalyses, primitives et protocoles).

Guilhem Castagnos

, 2019

2018

Practical Fully Secure Unrestricted Inner Product Functional Encryption modulo p.

Guilhem Castagnos, Fabien Laguillaumie, Ida Tucker

IACR Cryptol. ePrint Arch., 2018

2017

Encryption Switching Protocols Revisited: Switching modulo p.

Guilhem Castagnos, Laurent Imbert, Fabien Laguillaumie

IACR Cryptol. ePrint Arch., 2017

2015

Linearly Homomorphic Encryption from DDH.

Guilhem Castagnos, Fabien Laguillaumie

IACR Cryptol. ePrint Arch., 2015

Linearly Homomorphic Encryption from $$\mathsf {DDH}$$.

Guilhem Castagnos, Fabien Laguillaumie

Proceedings of the Topics in Cryptology, 2015

2013

High-order Masking by Using Coding Theory and Its Application to AES.

Guilhem Castagnos, Soline Renner, Gilles Zémor

Proceedings of the Cryptography and Coding - 14th IMA International Conference, 2013

2012

Homomorphic Encryption for Multiplications and Pairing Evaluation.

Guilhem Castagnos, Fabien Laguillaumie

Proceedings of the Security and Cryptography for Networks - 8th International Conference, 2012

2009

Fault Analysis of Grain-128.

Guilhem Castagnos, Alexandre Berzati, Cécile Canovas, Blandine Debraize, Louis Goubin, Aline Gouget, Pascal Paillier, Stephanie Salgado

Proceedings of the IEEE International Workshop on Hardware-Oriented Security and Trust, 2009

On the Security of Cryptosystems with Quadratic Decryption: The Nicest Cryptanalysis.

Guilhem Castagnos, Fabien Laguillaumie

Proceedings of the Advances in Cryptology, 2009

Factoring <i>pq</i>² with Quadratic Forms: Nice Cryptanalyses.

Guilhem Castagnos, Antoine Joux, Fabien Laguillaumie, Phong Q. Nguyen

Proceedings of the Advances in Cryptology, 2009

2008

Two Generic Constructions of Probabilistic Cryptosystems and Their Applications.

Guilhem Castagnos

Proceedings of the Security and Cryptography for Networks, 6th International Conference, 2008

Lattice-based homomorphic encryption of vector spaces.

Carlos Aguilar Melchor, Guilhem Castagnos, Philippe Gaborit

Proceedings of the 2008 IEEE International Symposium on Information Theory, 2008

2007

An efficient probabilistic public-key cryptosystem over quadratic fields quotients.

Guilhem Castagnos

Finite Fields Their Appl., 2007

Trapdoor Permutation Polynomials of Z/ <i>n</i> Z and Public Key Cryptosystems.

Guilhem Castagnos, Damien Vergnaud

Proceedings of the Information Security, 10th International Conference, 2007

Towards a DL-Based Additively Homomorphic Encryption Scheme.

Guilhem Castagnos, Benoît Chevallier-Mames

Proceedings of the Information Security, 10th International Conference, 2007

2003

What do DES S-boxes Say to Each Other ?

Nicolas T. Courtois, Guilhem Castagnos, Louis Goubin

IACR Cryptol. ePrint Arch., 2003