Results 21 to 30 of about 356 (107)
Disorientation faults in CSIDH [PDF]
, 2023 We investigate a new class of fault-injection attacks against the CSIDH family of cryptographic group actions. Our disorientation attacks effectively flip the direction of some isogeny steps.
Lange, Tanja +30 more
core +7 more sources
ЯК ПОБУДУВАТИ CSIDH НА КВАДРАТИЧНИХ І СКРУЧЕНИХ КРИВИХ ЕДВАРДСА
Кібербезпека: освіта, наука, техніка, 2022 В одної з відомих робіт виявлені некоректна постановка і невірне рішення задачі імплементації алгоритму CSIDH на кривих Едвардса . Дана розгорнена критика цієї роботи с доведенням неспроможності її концепції.
Anatoliy Bessalov
doaj +2 more sources
, 2020 For primes \(p \equiv 3 \bmod 4\), we show that setting up CSIDH on the surface, i.e., using supersingular elliptic curves with endomorphism ring \(Z[(1 + \sqrt{-p})/2]\), amounts to just a few sign switches in the underlying arithmetic. If \(p \equiv 7 \
Wouter Castryck, Thomas Decru
core +4 more sources
Optimizations and Practicality of High-Security CSIDH [PDF]
IACR Communications in CryptologyIn this work, we assess the real-world practicality of CSIDH, an isogeny-based non-interactive key exchange. We provide the first thorough assessment of the practicality of CSIDH in higher parameter sizes for conservative estimates of quantum
Jesús-Javier Chi-Domínguez +7 more
core +3 more sources
The SQALE of CSIDH: sublinear Vélu quantum-resistant isogeny action with low exponents [PDF]
Journal of Cryptographic Engineering, 2021 Recent independent analyses by Bonnetain-Schrottenloher and Peikert in Eurocrypt 2020 significantly reduced the estimated quantum security of the isogeny-based commutative group action key-exchange protocol CSIDH.
Jorge Chavez-Saab +2 more
exaly +2 more sources
Stronger and Faster Side-Channel Protections for CSIDH [PDF]
, 2019 This work has been accepted in LATINCRYPT-2019International audienceCSIDH is a recent quantum-resistant primitive based on the difficulty of finding isogeny paths between supersingular curves.
Chi-Domínguez, Jesús-Javier +11 more
core +6 more sources
He Gives C-Sieves on the CSIDH [PDF]
, 2020 Recently, Castryck, Lange, Martindale, Panny, and Renes proposed CSIDH (pronounced sea-side ) as a candidate post-quantum commutative group action.
Chris Peikert
core +3 more sources
Quantum Security Analysis of CSIDH [PDF]
, 2020 International audienceCSIDH is a recent proposal for post-quantum non-interactive key-exchange, presented at ASIACRYPT 2018. Based on supersingular elliptic curve isogenies, it is similar in design to a previous scheme by Couveignes, Rostovtsev and ...
André Schrottenloher +3 more
core +2 more sources
A note on key control in CSIDH [PDF]
IACR Cryptol. ePrint Arch., 2022 In this short note we explore a particular behaviour of the CSIDH key exchange that leads to a very special form of (shared) key control via the use of the quadratic twists.
Antonio Sanso
core +2 more sources
On Collisions Related to an Ideal Class of Order 3 in CSIDH [PDF]
, 2020 CSIDH is an isogeny-based key exchange, which is a candidate for post quantum cryptography. It uses the action of an ideal class group on Fp-isomorphic classes of supersingular elliptic curves.
Tsuyoshi Takagi, Hiroshi Onuki
core +3 more sources