Semi-Quantum Private Query Protocol Without Invoking the Measurement Capability of Classical User
| Autor: | Jia-Li Hu, Hong-Kun Li, Tian-Yu Ye |
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| Rok vydání: | 2020 |
| Předmět: |
Theoretical computer science
Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics Computer science General Mathematics Quantum private query Process (computing) 01 natural sciences User privacy Quantum cryptography Quantum state 0103 physical sciences State (computer science) 010306 general physics Protocol (object-oriented programming) Quantum |
| Zdroj: | International Journal of Theoretical Physics. 59:2044-2051 |
| ISSN: | 1572-9575 0020-7748 |
| DOI: | 10.1007/s10773-020-04476-3 |
| Popis: | Recently, Yang et al. suggested a semi-quantum private query (SQPQ) protocol (Quantum Inf Process (2015)14:1017) using one quantum state. Later, Yu et al. (Quantum Inf Process (2015)14:4201) pointed out that Yang et al.’s SQPQ protocol runs the risk of user privacy being invaded, i.e., the database owner can manipulate the conclusiveness of bits definitely by launching a special kind of fake initial state attack, and then constructed an improved quantum private query (QPQ) protocol to avoid this risk. However, Yu et al.’s QPQ protocol is not semi-quantum. In this paper, we successfully design the SQPQ protocol without running the risk of user privacy being invaded. The proposed SQPQ protocol has the following features: (1) it only employs one kind of quantum state as the initial quantum state; (2) it doesn’t require the classical user to perform the measurement operation; and (3) it is cheat-sensitive, which means that if the database privacy or the user privacy is invaded, the attack behavior can be detected. |
| Databáze: | OpenAIRE |
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