Results 81 to 90 of about 356 (107)

Efficient supersingularity testing over 픽p and CSIDH key validation.

IACR Cryptol. ePrint Arch., 2022
Many public-key cryptographic protocols, notably non-interactive key exchange (NIKE), require incoming public keys to be validated to mitigate some adaptive attacks. In CSIDH, an isogeny-based post-quantum NIKE, a key is deemed legitimate if the given Montgomery coefficient specifies a supersingular elliptic curve over the prime field. In this work, we
Banegas, Gustavo, Gilchrist, Valerie, Smith, Benjamin   +2 more
openaire   +3 more sources

A Summary of Mathematical and Computational Aspects of CSIDH-based Algorithms

, 2021
A Summary of Mathematical and Computational Aspects of CSIDH-based ...
Luciano Maino, Federico Pintore
core  

CSIDH on Other Form of Elliptic Curves

, 2020
Isogenies on elliptic curves are of great interest in post-quantum cryptography and appeal to more and more researchers. Many protocols have been proposed such as OIDH, SIDH and CSIDH with their own advantages.
Song Tian, Bao Li, Xuejun Fan, Xiu Xu
core  

$L_1$-Norm Ball for CSIDH: Optimal Strategy for Choosing the Secret Key Space [PDF]

, 2020
Isogeny-based cryptography is a kind of post-quantum cryptography whose security relies on the hardness of an isogeny problem over elliptic curves. In this paper, we study CSIDH, which is one of isogeny-based cryptography presented by Castryck et al.
Kohei Nakagawa, Tsuyoshi Takagi, Hiroshi Onuki, Atsushi Takayasu   +3 more
core  

A Constant-Time Hardware Architecture for the CSIDH Key-Exchange Protocol

CoRR
The commutative supersingular isogeny Diffie-Hellman (CSIDH) algorithm is a promising post-quantum key exchange protocol, notable for its exceptionally small key sizes, but hindered by computationally intensive key generation. Furthermore, practical implementations must operate in constant time to mitigate side-channel vulnerabilities, which presents ...
Sina Bagheri, Masoud Kaveh, Francisco Hernando-Gallego, Diego Martín 0001, Nuria Serrano   +4 more
openaire   +2 more sources

Practical Fault Injection Attacks on Constant Time CSIDH and Mitigation Techniques

Commutative Supersingular Isogeny Diffie-Hellman (CSIDH) is an isogeny-based key exchange protocol which is believed to be secure even when parties use long-lived secret keys.
Chiu, Tinghung, LeGrow, Jason T., Xiong, Wenjie   +2 more
core   +1 more source

DeCSIDH: Delegating isogeny computations in the CSIDH setting [PDF]

Delegating heavy computations to auxiliary servers, while keeping the inputs secret, presents a practical solution for computationally limited devices to use resource-intense cryptographic protocols, such as those based on isogenies, and thus allows the ...
Robi Pedersen
core  

Towards Optimized and Constant-Time CSIDH on Embedded Devices [PDF]

, 2019
We present an optimized, constant-time software library for commutative supersingular isogeny Diffie-Hellman key exchange (CSIDH) proposed by Castryck et al. which targets 64-bit ARM processors.
Reza Azarderakhsh, David Jao, Amir Jalali, Mehran Mozaffari Kermani   +3 more
core  

Efficient supersingularity testing over $\mathbb{F}_p$ and CSIDH key validation

, 2022
Many public-key cryptographic protocols, notably non-interactive key exchange (NIKE), require incoming public keys to be validated to mitigate some adaptive attacks.
Benjamin Smith, Valerie Gilchrist, Gustavo Banegas   +2 more
core  

CSI-IBBS: Identity-Based Blind Signature using CSIDH

Identity-based cryptography (IBC), proposed by Adi Shamir, revolutionized public key authentication by eliminating the need for certificates, enabling a more efficient and scalable approach to cryptographic systems. Meanwhile, in \cite{Katsumata2024group}, Katsumata et al.
Soumya Bhoumik, Sarbari Mitra, Rohit Raj Sharma, Kuldeep Namdeo   +3 more
openaire   +2 more sources