Comment on “flexible protocol for quantum private query based on B92 protocol”
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- 作者：Yan Chang ; Shi-Bin Zhang ; Jing-Min Zhu
- 关键词：Quantum private query ; Database security ; Non ; orthogonal projection measurement
- 刊名：Quantum Information Processing
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：16
- 期：3
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics;
- 出版者：Springer US
- ISSN：1573-1332
- 卷排序：16
文摘
In a recent paper (Quantum Inf Process 13:805–813, 2014), a flexible quantum private query (QPQ) protocol based on B92 protocol is presented. Here we point out that the B92-based QPQ protocol is insecure in database security when the channel has loss, that is, the user (Alice) will know more records in Bob’s database compared with she has bought.