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Quantum Search on Encrypted Data Based on Quantum Homomorphic Encryption.


ABSTRACT: We propose a homomorphic search protocol based on quantum homomorphic encryption, in which a client Alice with limited quantum ability can give her encrypted data to a powerful but untrusted quantum server and let the server search for her without decryption. By outsourcing the interactive key-update process to a trusted key center, Alice only needs to prepare and encrypt her original data and to decrypt the ciphered search result in linear time. Besides, we also present a compact and perfectly secure quantum homomorphic evaluation protocol for Clifford circuits, where the decryption key can be calculated by Alice with polynomial overhead with respect to the key length.

SUBMITTER: Zhou Q 

PROVIDER: S-EPMC7083879 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Quantum Search on Encrypted Data Based on Quantum Homomorphic Encryption.

Zhou Qing Q   Lu Songfeng S   Cui Yongquan Y   Li Li L   Sun Jie J  

Scientific reports 20200320 1


We propose a homomorphic search protocol based on quantum homomorphic encryption, in which a client Alice with limited quantum ability can give her encrypted data to a powerful but untrusted quantum server and let the server search for her without decryption. By outsourcing the interactive key-update process to a trusted key center, Alice only needs to prepare and encrypt her original data and to decrypt the ciphered search result in linear time. Besides, we also present a compact and perfectly  ...[more]

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