Anonymous credentials (AC) offer privacy in user-centric identity management. They enable
users to authenticate anonymously, revealing only necessary attributes. With the rise of …

Sparkle is the first threshold signature scheme in the pairing-free discrete logarithm setting
(Crites, Komlo, Maller, Crypto 2023) to be proven secure under adaptive corruptions …

Privacy-preserving payment systems face the difficult task of balancing privacy and
accountability: on one hand, users should be able to transact privately and anonymously, on …

Abstract Structure-preserving signatures (SPS) have emerged as an important cryptographic
building block, as their compatibility with the Groth-Sahai (GS) NIZK framework allows to …

We propose a variant of the original Boneh, Drijvers, and Neven (Asiacrypt'18) BLS multi-
signature aggregation scheme best suited to applications where the full set of potential …

Privacy-preserving payment systems face the difficult task of balancing privacy and
accountability: on one hand, users should be able to transact privately and anonymously, on …

Threshold variants of the Schnorr signature scheme have recently been at the center of
attention due to their applications to Bitcoin, Ethereum, and other cryptocurrencies …

Despite offering numerous advantages, public decentralized cryptocurrencies such as
Bitcoin suffer from scalability issues such as high transaction latency and low throughput …

Equivalence class signatures allow a controlled form of malleability based on equivalence
classes defined over the message space. As a result, signatures can be publicly randomized …

Abstract Delegatable Anonymous Credentials (DAC) are an enhanced Anonymous
Credentials (AC) system that allows credential owners to use credentials anonymously, as …