Leakage-Guided Selective Threshold Homomorphic Aggregation for Privacy-Preserving Federated Learning
Federated learning (FL) preserves data locality but leaks client properties and samples through shared updates. Homomorphic encryption (HE) hides individual updates from an honest-but-curious server, yet single-key CKKS concentrates trust and full-model encryption inflates bandwidth by an order of magnitude. We propose...