PQSF: post-quantum secure privacy-preserving federated learning

【Author】 Zhang, Xia; Deng, Haitao; Wu, Rui; Ren, Jingjing; Ren, Yongjun

【Source】SCIENTIFIC REPORTS

【影响因子】4.996

【Abstract】In federated learning, secret sharing is a key technology to maintain the privacy of participants' local models. Moreover, with the rapid development of quantum computers, existing federated learning privacy protection schemes based on secret sharing will no longer be able to guarantee the data security of participants in the post-quantum era. In addition, existing privacy protection methods have the problem of high communication and computational overhead. Although the multi-stage secret sharing scheme proposed by Pilaram et al. is one of the effective solutions to the above problems, existing studies have proven the privacy leakage risk of this scheme. This paper firstly designs a new lattice-based multi-stage secret sharing scheme Improved-Pilaram to solve the security problem, which allows participants to use public vectors to reconstruct different secret values without changing the secret sharing. Based on Improved-Pilaram, this article proposes a post-quantum secure federated learning scheme PQSF. PQSF uses double masking technology to encrypt model parameters and achieves mask reconstruction through secret sharing. Since Improved-Pilaram is multi-stage, participants do not need to update their local secret shares frequently during training. Analysis and experimental results show that the PQSF proposed in this paper reduces the communication complexity between participants and reduces the computational overhead by about 20% compared with existing solutions.

【Keywords】Federated learning; Secure aggregation; Secret sharing; Post quantum security

【发表时间】2024 OCT 9

【收录时间】2024-11-12

【文献类型】实验仿真

【主题类别】

区块链技术-协同技术-联邦学习