A note on "new quantum key agreement protocols based on Bell states"

被引：0

作者：

Cao, Zhengjun ^{[1
]}

Markowitch, Olivier ^{[2
]}

机构：

[1] Shanghai Univ, Dept Math, Shangda Rd 99, Shanghai 200444, Peoples R China

[2] Univ Libre Bruxelles, Comp Sci Dept, Blvd Triomphe CP 212, B-1050 Bruxelle, Belgium

来源：

QUANTUM INFORMATION PROCESSING | 2021年 / 20卷 / 02期

关键词：

Quantum cryptography; Key agreement; Key transfer; Bell state;

D O I：

10.1007/s11128-021-03004-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We remark that the quantum key agreement protocol (Yang et al. in Quantum Inf Process 18(10):322, 2019) is flawed. It is unnecessary for Bob to prepare his secret key K-B, because it is finally announced and accessible to adversaries. We find, K-B has no relation to the confidentiality of the final agreed key K-AB = K-A circle plus K-B. It is just a key transfer scheme, not a general key agreement scheme. We also find there is short of a code for Bob to extract bits from the measured results.

引用

页数：5

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