1. End-to-End Verifiable Decentralized Federated Learning
- Author
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Lee, Chaehyeon, Heiss, Jonathan, Tai, Stefan, and Hong, James Won-Ki
- Subjects
Computer Science - Machine Learning ,Computer Science - Cryptography and Security ,Computer Science - Distributed, Parallel, and Cluster Computing - Abstract
Verifiable decentralized federated learning (FL) systems combining blockchains and zero-knowledge proofs (ZKP) make the computational integrity of local learning and global aggregation verifiable across workers. However, they are not end-to-end: data can still be corrupted prior to the learning. In this paper, we propose a verifiable decentralized FL system for end-to-end integrity and authenticity of data and computation extending verifiability to the data source. Addressing an inherent conflict of confidentiality and transparency, we introduce a two-step proving and verification (2PV) method that we apply to central system procedures: a registration workflow that enables non-disclosing verification of device certificates and a learning workflow that extends existing blockchain and ZKP-based FL systems through non-disclosing data authenticity proofs. Our evaluation on a prototypical implementation demonstrates the technical feasibility with only marginal overheads to state-of-the-art solutions., Comment: 9 pages, 5 figures, This article has been accepted for presentation at the IEEE International Conference on Blockchain and Cryptocurrency (ICBC 2024)
- Published
- 2024