Jiashuo Zhang

ChainDB: Ensuring Integrity of Querying Off-Chain Data on Blockchain

2022

Enterprise blockchain applications have been widely adopted and the data scale on blockchain increases rapidly in recent years. In practical application, participants prefer to store most of the business data in local database systems and …

Demystifying and Detecting Cryptographic Defects in Ethereum Smart Contracts

2025

Ethereum has officially provided a set of system-level cryptographic APIs to enhance smart contracts with cryptographic capabilities. These APIs have been utilized in over 10% of Ethereum transactions, motivating developers to implement various on-chain cryptographic …