Progressive-Resolution Secure Aggregation for Federated Learning
Abstract
Secure aggregation lets a server recover an aggregate of client updates without observing any individual update, but conventional protocols fix the aggregate precision when clients upload. We introduce and formulate a new progressive-resolution secure-aggregation functionality in which clients upload once and successively finer resolutions of the same aggregate can later be authorized without renewed client participation. To realize this functionality, we propose progressive-resolution secure aggregation (PSA): each clipped, dithered update is represented by compatible nested-lattice digits; separately releasable layers are protected by secure aggregation and an additional aggregate pad that remains unavailable to the server until a non-colluding release controller authorizes that layer.
Related
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BibTeX
@misc{azimiabarghouyi2026progressiveresolution,
title = {{Progressive-Resolution Secure Aggregation for Federated Learning}},
author = {Seyed Mohammad Azimi-Abarghouyi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.00695},
eprint = {2610.00695},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.00695},
}
RIS
TY - UNPB
TI - Progressive-Resolution Secure Aggregation for Federated Learning
AU - Seyed Mohammad Azimi-Abarghouyi
PY - 2026
DA - 2026/10/01
PB - arXiv
DO - 10.48550/arxiv.2610.00695
UR - https://arxiv.org/abs/2610.00695
AB - Secure aggregation lets a server recover an aggregate of client updates without observing any individual update, but conventional protocols fix the aggregate precision when clients upload. We introduce and formulate a new progressive-resolution secure-aggregation functionality in which clients upload once and successively finer resolutions of the same aggregate can later be authorized without renewed client participation. To realize this functionality, we propose progressive-resolution secure aggregation (PSA): each clipped, dithered update is represented by compatible nested-lattice digits; separately releasable layers are protected by secure aggregation and an additional aggregate pad that remains unavailable to the server until a non-colluding release controller authorizes that layer.
ER -