8 papers · 1 filter
Domain Specific Post Quantum Signatures for Blockchains
Maja Lie, Ben Marsh
Blockchains need more than post quantum single signer signatures. They need consensus profiled authentication objects with canonical bytes, priced invalid input rejection, stable t…
A BUD You Can Count On: Efficient, Verifiable Membership Proofs
Alejandro Ranchal-Pedrosa, Cody Littley, Ben Marsh
A block typically changes only a small fraction of blockchain state, yet producing a state root makes validators update an authenticated tree spanning it all. We show how to suppor…
Finality Before Disclosure for Ledger Authenticators in the Quantum Random Oracle Model
Maja Lie, Benjamin Marsh
Public ledgers increasingly authorize state transitions using prior transactions, finalized state, timing, and ordering rather than only a public key, message, and portable signatu…
Reveal, Correct, Then Pay: Encrypted Mempools and Perpetual Funding Security
Benjamin Marsh
Encrypted mempools are designed to hide transaction contents until execution order is fixed, preventing many victim dependent forms of maximal extractable value. This paper studies…
Meeting in the Middle: A Co-Design Paradigm for FHE and AI Inference
Bernardo Magri, Benjamin Marsh, Paul Gebheim
Modern cloud inference creates a two sided privacy problem where users reveal sensitive inputs to providers, while providers must execute proprietary model weights inside potential…
Sedna: Sharding transactions in multiple concurrent proposer blockchains
Alejandro Ranchal-Pedrosa, Benjamin Marsh, Lefteris Kokoris-Kogias +1
Modern blockchains increasingly adopt multi-proposer (MCP) consensus to remove single-leader bottlenecks and improve censorship resistance. However, MCP alone does not resolve how…
A Time-Bound Signature Scheme for Blockchains
Benjamin Marsh, Paolo Serafino
We introduce a modified Schnorr signature scheme to allow for time-bound signatures for transaction fee auction bidding and smart contract purposes in a blockchain context, ensurin…
Pulsar Consensus
Samer Afach, Benjamin Marsh, Enrico Rubboli
In this paper, we informally introduce the Pulsar proof of stake consensus paper and discuss the relevant design decisions and considerations. The Pulsar protocol we propose is des…