# A Privacy-Preserving Record Linkage Method Based on Secret Sharing and Blockchain
## 4 Methods
### Output and Audit Module
#### 4.4.4 Record Keeping and Provenance
Lastly, the integration and advancement of cutting-edge privacy-preserving technologies will be deepened, for instance, by hardening initial encoding stages like Bloom filters through salting or noise injection to defend against direct data analysis attacks [39], and by combining differential privacy and access pattern obfuscation to reduce potential side-channel leakage, ensuring high-level privacy in complex adversarial environments [40]. Through continued exploration in these areas, we expect to further elevate the comprehensive performance of the SSB-PPRL method, enabling it to better serve real-world data sharing requirements. Conceptualization, S.H., Z.W., and Q.Z. ; methodology, S.H., Z.W., and Q.Z. ; software, S.H., Z.W., and Y.X. ; validation, S.H., Z.W., and Q.Z. ; formal analysis, S.H., Q.Z., D.S., and C.W. ; investigation, S.H., Q.Z., D.S., and C.W. ; resources, S.H. and Z.W. ; data curation, S.H., Z.W., and Y.X. ; writing--original draft preparation, S.H. and Z.W. ; writing--review and editing, S.H., Z.W., and Q.Z. ; visualization, S.H., Z.W., and D.S. ; supervision, S.H. All authors have read and agreed to the published version of the manuscript. **Funding:** This study was supported by the National Natural Science Foundation of China (62172082) and the Education Department of Liaoning Province, Youth Project (LJKQZ20222440). **Data Availability Statement:** The data used to support the findings of this study are available from the corresponding author upon request. **Conflicts of Interest:** The authors declare no conflicts of interest. ## References

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