Quantum secure protocols for multiparty computations

doi:10.1016/j.jisa.2025.104033

Quantum secure protocols for multiparty computations

2025-05-01

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DOI：10.1016/j.jisa.2025.104033

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Secure multiparty computation (MPC) schemes allow two or more parties to conjointly compute a function on their private input sets while revealing nothing but the output. Existing state-of-the-art number-theoretic-based designs face the threat of attacks through quantum algorithms. In this context, we present secure MPC protocols that can withstand quantum attacks. We first present the design and analysis of an information-theoretic secure oblivious linear evaluation (OLE), namely BOLE in the quantum domain. We showed that BOLE is safe from external attacks. In addition, it satisfies all the security requirements of a secure OLE. In the following, we utilized BOLE as a building block to construct a quantum-safe multiparty private set intersection (MPSI) protocol.

Keyword:

Quantum cryptography

Multiparty computations

MPSI

Quantum secure protocols for multiparty computations

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