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Federated learning enables isolated clients to train a shared model collaboratively by aggregating the locally-computed gradient updates. However, privacy information could be leaked from uploaded gradients and be exposed to malicious…

Cryptography and Security · Computer Science 2023-02-28 Dun Zeng , Shiyu Liu , Siqi Liang , Zonghang Li , Hui Wang , Irwin King , Zenglin Xu

Federated learning is a collaborative method that aims to preserve data privacy while creating AI models. Current approaches to federated learning tend to rely heavily on secure aggregation protocols to preserve data privacy. However, to…

Cryptography and Security · Computer Science 2022-11-14 John Reuben Gilbert

Federated learning has recently emerged as a paradigm promising the benefits of harnessing rich data from diverse sources to train high quality models, with the salient features that training datasets never leave local devices. Only model…

Cryptography and Security · Computer Science 2022-02-07 Yifeng Zheng , Shangqi Lai , Yi Liu , Xingliang Yuan , Xun Yi , Cong Wang

In federated learning, multiple parties train models locally and share their parameters with a central server, which aggregates them to update a global model. To address the risk of exposing sensitive data through local models, secure…

Secure Aggregation protocols allow a collection of mutually distrust parties, each holding a private value, to collaboratively compute the sum of those values without revealing the values themselves. We consider training a deep neural…

Cryptography and Security · Computer Science 2016-11-16 Keith Bonawitz , Vladimir Ivanov , Ben Kreuter , Antonio Marcedone , H. Brendan McMahan , Sarvar Patel , Daniel Ramage , Aaron Segal , Karn Seth

We propose SwiftAgg+, a novel secure aggregation protocol for federated learning systems, where a central server aggregates local models of $N \in \mathbb{N}$ distributed users, each of size $L \in \mathbb{N}$, trained on their local data,…

Information Theory · Computer Science 2022-09-09 Tayyebeh Jahani-Nezhad , Mohammad Ali Maddah-Ali , Songze Li , Giuseppe Caire

Secure aggregation is commonly used in federated learning (FL) to alleviate privacy concerns related to the central aggregator seeing all parameter updates in the clear. Unfortunately, most existing secure aggregation schemes ignore two…

For model privacy, local model parameters in federated learning shall be obfuscated before sent to the remote aggregator. This technique is referred to as \emph{secure aggregation}. However, secure aggregation makes model poisoning attacks…

Cryptography and Security · Computer Science 2024-04-26 Zhuosheng Zhang , Jiarui Li , Shucheng Yu , Christian Makaya

Decentralized learning (DL) faces increased vulnerability to privacy breaches due to sophisticated attacks on machine learning (ML) models. Secure aggregation is a computationally efficient cryptographic technique that enables multiple…

Machine Learning · Computer Science 2024-05-15 Sayan Biswas , Anne-Marie Kermarrec , Rafael Pires , Rishi Sharma , Milos Vujasinovic

Cross-silo federated learning (FL) enables multiple clients to collaboratively train a machine learning model without sharing training data, but privacy in FL remains a major challenge. Techniques using homomorphic encryption (HE) have been…

Cryptography and Security · Computer Science 2023-05-16 Jiahui Wu , Weizhe Zhang , Fucai Luo

Secure linear aggregation is to linearly aggregate private inputs of different users with privacy protection. The server in a federated learning (FL) environment can fulfill any linear computation on private inputs of users through the…

Cryptography and Security · Computer Science 2021-11-23 Haibo Tian , Fangguo Zhang , Yunfeng Shao , Bingshuai Li

Federated Unlearning (FU) is gaining prominence for its capability to eliminate influences of Federated Learning (FL) users' data from trained global FL models. A straightforward FU method involves removing the unlearned users and…

Cryptography and Security · Computer Science 2024-11-04 Ziyao Liu , Yu Jiang , Weifeng Jiang , Jiale Guo , Jun Zhao , Kwok-Yan Lam

Financial fraud increasingly exploits institutional boundaries: laundering networks distribute transactions across multiple banks because no single institution can observe the full pattern. Federated Learning (FL) enables collaborative…

Cryptography and Security · Computer Science 2026-05-19 Prajwal Panth , Nishant Nigam

Federated Learning (FL) has emerged as a crucial distributed training paradigm, enabling discrete devices to collaboratively train a shared model under the coordination of a central server, while leveraging their locally stored private…

Machine Learning · Computer Science 2024-09-02 Wenhao Yuan , Xuehe Wang

Secure Multiparty Computation (MPC) can improve the security and privacy of data owners while allowing analysts to perform high quality analytics. Secure aggregation is a secure distributed mechanism to support federated deep learning…

Cryptography and Security · Computer Science 2022-05-04 Timothy Stevens , Joseph Near , Christian Skalka

Federated learning (FL) is a decentralized learning technique that enables participating devices to collaboratively build a shared Machine Leaning (ML) or Deep Learning (DL) model without revealing their raw data to a third party. Due to…

Federated learning (FL) facilitates collaborative training of machine learning models among a large number of clients while safeguarding the privacy of their local datasets. However, FL remains susceptible to vulnerabilities such as privacy…

Cryptography and Security · Computer Science 2024-03-12 Xincheng Li , Jianting Ning , Geong Sen Poh , Leo Yu Zhang , Xinchun Yin , Tianwei Zhang

Federated learning (FL) aims to protect data privacy by enabling clients to build machine learning models collaboratively without sharing their private data. Recent works demonstrate that information exchanged during FL is subject to…

Machine Learning · Computer Science 2024-07-09 Yuezhou Wu , Yan Kang , Jiahuan Luo , Yuanqin He , Qiang Yang

Over the recent years, with the increasing adoption of Federated Learning (FL) algorithms and growing concerns over personal data privacy, Privacy-Preserving Federated Learning (PPFL) has attracted tremendous attention from both academia…

Cryptography and Security · Computer Science 2022-07-14 Ziyao Liu , Jiale Guo , Wenzhuo Yang , Jiani Fan , Kwok-Yan Lam , Jun Zhao

In federated learning, particularly in cross-device scenarios, secure aggregation has recently gained popularity as it effectively defends against inference attacks by malicious aggregators. However, secure aggregation often requires…

Cryptography and Security · Computer Science 2024-04-23 Xu Yang , Jiapeng Zhang , Qifeng Zhang , Zhuo Tang