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Articles by Ron Steinfeld
Future-proofing money: The race to quantum-safe finance
Imagine waking up to a headline that reads: “Global cryptographic systems compromised overnight.” Bank transfers stall. Digital identities are questioned. Cryptocurrency wallets are drained. It sounds dramatic, but it reflects a growing concern among cybersecurity experts worldwide. At the centre of this conversation is a powerful emerging technology: quantum computing. For decades, the digital economy has relied on cryptography to keep information secure.
Modeling Mobile Crash in Byzantine Consensus
Paper 2024/452 , Monash University , BabylonChain Inc. , University of Sydney , Monash University , University of Sydney Targeted Denial-of-Service (DoS) attacks have been a practical concern for permissionless blockchains. Potential solutions, such as random sampling, are adopted by blockchains. However, the associated security guarantees have only been informally discussed in prior work.
Vandermonde meets Regev: Public Key Encryption Schemes Based on Partial Vandermonde Problems
Paper 2022/679 Vandermonde meets Regev: Public Key Encryption Schemes Based on Partial Vandermonde Problems , Aarhus University , Monash University , Monash University Abstract PASS Encrypt is a lattice-based public key encryption scheme introduced by Hoffstein and Silverman in 2015.
Efficient Hybrid Exact/Relaxed Lattice Proofs and Applications to Rounding and VRFs
Paper 2022/141 Efficient Hybrid Exact/Relaxed Lattice Proofs and Applications to Rounding and VRFs , Monash University, CSIRO's Data61 , Monash University , CSIRO's Data61 , UNSW Sydney Abstract In this work, we study hybrid exact/relaxed zero-knowledge proofs from lattices, where the proved relation is exact in one part and relaxed in the other.
High Throughput Lattice-based Signatures on GPUs: Comparing Falcon and Mitaka
Paper 2023/399 High Throughput Lattice-based Signatures on GPUs: Comparing Falcon and Mitaka , Gachon University , CSIRO , Monash University , Monash University , Gachon University Abstract The US National Institute of Standards and Technology initiated a standardization process for post-quantum cryptography in 2017, with the aim of selecting key encapsulation mechanisms and signature schemes that can withstand the threat from emerging quantum computers.
An Injectivity Analysis of CRYSTALS-Kyber and Implications on Quantum Security
Paper 2022/1757 An Injectivity Analysis of CRYSTALS-Kyber and Implications on Quantum Security , Monash University , Monash University, CSIRO's Data61 , Monash University , Monash University Abstract The One-Way to Hiding (O2H) Lemma is a central component of proofs of chosen-ciphertext attack (CCA) security of practical public-key encryption schemes using variants of the Fujisaki-Okamoto (FO) transform in the Quantum Random Oracle Model (QROM). Recently, Kuchta et al.
Private Re-Randomization for Module LWE and Applications to Quasi-Optimal ZK-SNARKs
Paper 2022/1690 Private Re-Randomization for Module LWE and Applications to Quasi-Optimal ZK-SNARKs , Monash University , Monash University , Monash University, CSIRO's Data61 , Florida Atlantic University Abstract We introduce the first candidate lattice-based Designated Verifier (DV) ZK-SNARK protocol with \emph{quasi-optimal proof length} (quasi-linear in the security/privacy parameter), avoiding the use of the exponential smudging technique.
Quantum-safe HIBE: does it cost a Latte?
Paper 2021/222 Quantum-safe HIBE: does it cost a Latte? , Data61 , University of Waterloo , Monash University , Monash University , Queen's University Belfast Abstract The UK government is considering advanced primitives such as identity-based encryption (IBE) for adoption as they transition their public-safety communications network from TETRA to an LTE-based service.
Garrison: A Novel Watchtower Scheme for Bitcoin
Paper 2022/1300 Garrison: A Novel Watchtower Scheme for Bitcoin , Monash University , Monash University , Monash University , Monash University In this paper, we propose Garrison, which is a payment channel with watchtower for Bitcoin. For this scheme, the storage requirements of both channel parties and their watchtower would be O(log(N)) with N being the maximum number of channel updates.
Daric: A Storage Efficient Payment Channel With Penalization Mechanism
Paper 2022/1295 Daric: A Storage Efficient Payment Channel With Penalization Mechanism , Monash University , Monash University , Monash University , Monash University Abstract Lightning Network (LN), the most widely deployed payment channel for Bitcoin, requires channel parties to generate and store distinct revocation keys for all n payments of a channel to resolve fraudulent channel closures.
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