Improving the security of secure direct communication based on the secret transmitting order of particles
Improving the security of secure direct communication based on the secret transmitting order of particles
复制标题
基于粒子秘密传输顺序提高安全直接通信的安全性
DOI：
10.1103/physreva.74.054302
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发表时间：
2006-11-01
影响因子：
2.9
通讯作者：
Zhou, Hong-Yu
中科院分区：
文献类型：
--
作者：
Li, Xi-Han;Deng, Fu-Guo;Zhou, Hong-Yu
对Zhu，Xia，Fan，and Zhang[Phys. Rev. A 73，022338（2006）]提出的基于粒子秘密传输顺序的安全直接通信协议的安全性进行了分析，发现如果窃听者（如Eve）使用特洛伊木马攻击策略窃取秘密消息，则该方案是不安全的.该方案的关键漏洞是两个授权用户只检查一次量子信道的安全性。夏娃可以在发送者爱丽丝发送给接收者鲍勃的每个光子中插入另一个间谍光子，一个不可见的光子，或者一个延迟光子，并在间谍光子从鲍勃返回到爱丽丝时捕获它。在授权用户进行安全检查后，Eve可以根据Bob公布的发送命令信息获取秘密消息。最后，我们提出了一个可能的改进该协议。
We analyzed the security of the secure direct communication protocol based on the secret transmitting order of particles recently proposed by Zhu, Xia, Fan, and Zhang[Phys. Rev. A 73, 022338 (2006)] and found that this scheme is insecure if an eavesdropper, say Eve, wants to steal the secret message with Trojan horse attack strategies. The vital loophole in this scheme is that the two authorized users check the security of their quantum channel only once. Eve can insert another spy photon, an invisible photon, or a delay one in each photon which the sender Alice sends to the receiver Bob, and capture the spy photon when it returns from Bob to Alice. After the authorized users check the security, Eve can obtain the secret message according to the information about the transmitting order published by Bob. Finally, we present a possible improvement of this protocol.