Lang Pu

Janus: Dual-Server Multi-Round Secure Aggregation with Verifiability for Federated Learning

Secure Aggregation (SA) is a cornerstone of Federated Learning (FL), ensuring that user updates remain hidden from servers. The advanced Flamingo (S\&P'23) has realized multi-round aggregation and improved efficiency. However, it still faces several key challenges: scalability issues with dynamic us…