Experimental symmetric private information retrieval with measurement-device-independent quantum network

• URL: http://arxiv.org/abs/2109.12827v2
• Date: Wed, 6 Oct 2021 03:46:25 GMT
• Title: Experimental symmetric private information retrieval with measurement-device-independent quantum network
• Authors: Chao Wang, Wen Yu Kon, Hong Jie Ng, and Charles C.-W. Lim
• Abstract summary: We report a realisation of provably-secure SPIR supported by a quantum-secure key-exchange network. The SPIR scheme looks at biometric security, offering secure retrieval of 582-byte fingerprint files from a database with 800 entries.
• Score: 2.549884936158282
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Secure information retrieval is an essential task in today's highly digitised society. In some applications, it may be necessary that user query's privacy and database content's security are enforced. For these settings, symmetric private information retrieval (SPIR) could be employed, but its implementation is known to be demanding, requiring a private key-exchange network as the base layer. Here, we report for the first time a realisation of provably-secure SPIR supported by a quantum-secure key-exchange network. The SPIR scheme looks at biometric security, offering secure retrieval of 582-byte fingerprint files from a database with 800 entries. Our experimental results clearly demonstrate the feasibility of SPIR with quantum secure communications, thereby opening up new possibilities in secure distributed data storage and cloud computing over the future Quantum Internet.

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