DVFS: A Dynamic Verifiable Fuzzy Search Service for Encrypted Cloud Data

Cloud storage introduces critical privacy challenges for encrypted data retrieval, where fuzzy multi-keyword search enables approximate matching while preserving data confidentiality. Existing solutions face fundamental trade-offs between security and efficiency: linear-search mechanisms provide adaptive security but incur prohibitive overhead for large-scale data, while tree-based indexes improve performance at the cost of branch leakage vulnerabilities.