文章基本信息

标题：Quantum Authentication of Classical Messages without Entangled State as Authentication Key
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作者：Xiangjun Xin ; Fagen Li
期刊名称：International Journal of Multimedia and Ubiquitous Engineering
印刷版ISSN：1975-0080
出版年度：2015
卷号：10
期号：8
页码：199-206
DOI：10.14257/ijmue.2015.10.8.20
出版社：SERSC
摘要：Classical messages can be authenticated by traditional authentication protocols based on hash functions. The security of these protocols depends on long authentication keys, the selection of appropriate hash functions and some assumptions concerning the computational complexity of some algorithms. In this paper, by encoding the classical binary messages and binary keys as nonorthogonal quantum messages and nonorthogonal sets of states, respectively, and using quantum encrypting scheme, a new quantum authentication protocol is proposed. In our protocol, instead of entangled quantum states, the traditional binary bits, which can be easily saved, are encoded as quantum keys. Because the quantum messages are nonorthogonal, any forgery or measurement on the quantum messages will be detected with a certain probability. Our protocol allows the authentication of binary classical messages in a secure manner.
关键词：Quantum authentication; Qubit; Unitary operation; Security