Financial Cryptography and Data Security

Feeling Optimistic.- Light Clients for Lazy Blockchains.- Short paper: Naysayer proofs.- Randomness and Time.- GoAT: File Geolocation via Anchor Timestamping.- Improved YOSO Randomness Generation with Worst-Case Corruptions.- Short Paper: Breaking X-VRF, a Post-Quantum Verifiable Random Function.- Truncator: Time-space Tradeoff of Cryptographic Primitives.- Signatures.- Foundations of Anonymous Signatures: Formal Definitions, Simplified Requirements, and a Construction Based on General Assumptions.- Proactive Refresh for Accountable Threshold Signatures.- SoK: Signatures With Randomizable Keys.- Subset-optimized BLS Multi-signature with Key Aggregation.- Applied Cryptography.- SAVER: SNARK-compatible Verifiable Encryption.- Owl: An Augmented Password-Authenticated Key Exchange Scheme.- PETS.- Anonymous Reputation Systems with Revocation, Revisited.- Towards Practical Doubly-Efficient Private Information Retrieval.- Short Paper: Onion Messages on Leash.- A Transaction-Level Model for Blockchain Privacy.- Designing for the Real World.- The Governance of Distributed Autonomous Organizations: A Study of Contributors' Influence, Networks, and Shifts in Voting Power.- Privacy-preserving Anti-Money Laundering using Secure Multi-Party Computation.- Scan, Shuffle, Rescan: Two-Prover Election Audits With Untrusted Scanners.- DeFi composability as MEV non-interference.