Paper 2026/2497 Original: eprint.iacr.org/2026/2497 ↗

SecAgg++: A Post-Quantum Privacy Preserving Federated Learning Protocol

Alessandro Perez
Giulia Cavicchioni
Silvio Cretti
Riccardo Longo
Alessandro Tomasi
Silvio Ranise
Abstract

Secure aggregation is a fundamental building block for privacy-preserving federated learning, yet most existing masking-based secure aggregation protocols do not provide post-quantum security. In this work, we present SecAgg++, a masking-based post-quantum secure aggregation protocol for the single-server setting. SecAgg++ integrates post-quantum cryptographic primitives while preserving the communication and computational efficiency of classical frameworks such as SecAgg and SecAgg+, and supports client dropout handling through an efficient recovery procedure.

Metadata
Available format(s)
PDF
Category
Applications
Publication info
Preprint.
History
2026-10-15: last updated
2026-10-15: published
Short URL
https://ia.cr/2026/2497
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2026/2497,
      author = {Alessandro Perez and Giulia Cavicchioni and Silvio Cretti and Riccardo Longo and Alessandro Tomasi and Silvio Ranise},
      title = {SecAgg++: A Post-Quantum Privacy Preserving Federated Learning Protocol},
      howpublished = {Cryptology {ePrint} Archive, Paper 2026/2497},
      year = {2026},
      url = {https://eprint.iacr.org/2026/2497}
}
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