Since the introduction of public-key cryptography by Diffie and Hellman in 1976, the
potential for the use of the discrete logarithm problem in public-key cryptosystems has been …

The problem of source separation is an inductive inference problem. There is not enough
information to deduce the solution, so one must use any available information to infer the …

We present an attack on SIDH utilising isogenies between polarized products of two
supersingular elliptic curves. In the case of arbitrary starting curve, our attack (discovered …

We introduce a new signature scheme, SQISign,(for Short Quaternion and Isogeny
Signature) from isogeny graphs of supersingular elliptic curves. The signature scheme is …

We propose an efficient commutative group action suitable for non-interactive key exchange
in a post-quantum setting. Our construction follows the layout of the Couveignes–Rostovtsev …

We present an attack on SIDH which does not require any endomorphism information on the
starting curve. Our attack has subexponential complexity thus significantly reducing the …

In this paper we report on a new record class group computation of an imaginary quadratic
field having 154-digit discriminant, surpassing the previous record of 130 digits. This class …

Feynman integrals are indispensable for precision calculations in quantum field theory. They
occur as soon as one goes beyond the leading order in perturbative quantum field theory …

We introduce FESTA, an efficient isogeny-based public-key encryption (PKE) protocol based
on a constructive application of the SIDH attacks. At its core, FESTA is based on a novel …

We introduce SQIsignHD, a new post-quantum digital signature scheme inspired by
SQIsign. SQIsignHD exploits the recent algorithmic breakthrough underlying the attack on …