Secure Two-Party Matrix Multiplication
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Secure Two-Party Matrix Multiplication from Lattices and Its Application to Encrypted Control
arXiv:2603.22857v2 Announce Type: replace Abstract: In this study, we propose a two-party computation protocol for approximate matrix multiplication of fixed-point numbers. The proposed protocol is provably secure under standard lattice-based cryptographic assumptions and enables matrix multiplication at a desired approximation level within a single round of communication. We demonstrate the feasibility of the protocol by applying it to the secure implementation of a linear control law.