Bernardo David

A Framework for Efficient Adaptively Secure Composable Oblivious Transfer in the ROM

2017 · arXiv (Cornell University)

Oblivious Transfer (OT) is a fundamental cryptographic protocol that finds a number of applications, in particular, as an essential building block for two-party and multi-party computation. We construct a round-optimal (2 rounds) universally composable (UC) …

FairPoS: Input Fairness in Permissionless Consensus

2023 · DROPS (Schloss Dagstuhl – Leibniz Center for Informatics)

In permissionless consensus, the ordering of transactions or inputs in each block is freely determined by an anonymously elected block leader. A rational block leader will choose an ordering of inputs that maximizes financial gain; …