Threshold signatures improve both availability and security of digital signatures by splitting
the signing key into N shares handed out to different parties. Later on, any subset of at least …

Threshold signatures have recently seen a renewed interest due to applications in
cryptocurrency while NIST has released a call for multi-party threshold schemes, with a …

T-out-of-N threshold signatures have recently seen a renewed interest, with various types
now available, each offering different tradeoffs. However, one property that has remained …

We design and implement a novel post-quantum signature scheme based on the Legendre
PRF, named Loquat. Prior to this work, efficient approaches for constructing post-quantum …

In this paper, we introduce a new framework for constructing linkable ring signatures (LRS).
Our framework is based purely on signatures of knowledge (SoK) which allows one to issue …

The hardness of lattice problems offers one of the most promising security foundations for
quantum-safe cryptography. Basic schemes for public key encryption and digital signatures …

Abstract We introduce the Merkle Tree Ladder (MTL) mode of operation for signature
schemes. MTL mode signs messages using an underlying signature scheme in such a way …

With the threat posed by quantum computers on the horizon, systems like Ethereum must
transition to cryptographic primitives resistant to quantum attacks. One of the most critical of …

It is known that one can generically construct a post-quantum anonymous credential
scheme, supporting the showing of arbitrary predicates on its attributes using general …

This paper proposes a novel lattice-based aggregate signature (LAS) scheme that brings
post-quantum security to the Bitcoin system without sacrificing its transaction efficiency …