Author

Feng-Rong-Zhang-Xiu-Qing Chen

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Preprint Oct 2026

PQ-Vault: Provably Quantum-Safe Asset Custody for Unmodified Ethereum

A quantum computer could recover the key of any Ethereum account whose public key appears on chain. We prove that no sidechain or bridge that leaves Ethereum's rules unchanged can protect such accounts: their funds must move into a contract whose release condition relies only on quantum-safe primitives. We design \emph...

Hassan Khodaiemehr, Khadijeh Bagheri, Feng-Rong-Zhang-Xiu-Qing Chen · 0 citations

Preprint Oct 2026

Rateless Nested Lattice Codes for Secure Cooperative V2X Broadcast over Fading and Erasure Channels

Vehicle-to-everything (V2X) sidelink and uplink broadcast must deliver safety-critical and application-layer data reliably under fast time-varying fading, intermittent packet erasures, and exposure to passive eavesdroppers. Fixed-rate physical-layer codes are poorly matched to these conditions because link quality and...

Pegah Sharifi, Hassan Khodaiemehr, Khadijeh Bagheri et al. · 0 citations

Preprint Sep 2026

Orbit Reduction and Learned Run Distributions for Finite-Blocklength Binary Deletion Channels

This work shows that the optimal input is unique, gives positive probability to every string, and is unchanged by complementing or reversing the strings, and introduces the optimized run distribution (ORD), which assigns one probability to each number of runs.

Hassan Khodaiemehr, Feng-Rong-Zhang-Xiu-Qing Chen · 0 citations