Quantum asymmetric cryptography with symmetric keys

被引：36

作者：

Gao Fei ^{[1
]}

Wen QiaoYan ^{[1
]}

Qin SuJuan ^{[1
]}

Zhu FuChen ^{[2
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China

[2] Natl Lab Modern Commun, Chengdu 610041, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2009年 / 52卷 / 12期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

quantum cryptography; public-key cryptography; entanglement; PRIVACY AMPLIFICATION; SECURITY; ENTANGLEMENT; PURIFICATION; STATES;

D O I：

10.1007/s11433-009-0299-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on quantum encryption, we present a new idea for quantum public-key cryptography (QPKC) and construct a whole theoretical framework of a QPKC system. We show that the quantum-mechanical nature renders it feasible and reasonable to use symmetric keys in such a scheme, which is quite different from that in conventional public-key cryptography. The security of our scheme is analyzed and some features are discussed. Furthermore, the state-estimation attack to a prior QPKC scheme is demonstrated.

引用

页码：1925 / 1931

页数：7

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