controlled quantum secure direct communication with authentication based on four particle cluster state
首发时间:2018-01-09
Abstract:A controlled quantum secure direct communication with authentication protocol using four particle cluster states is presented in this paper. By using identity string, the participants of the communication can authenticate the other communicators.We redesign the authentication method from protocol of Chang et.al[23], a hash function is used to generate a random string in order to guarantee the transmission of the particles, preventing the eavesdropper from stealing the secret message. In our protocol, one particle of the cluster state is used as controller\'s permission and two qubits are used to transmit two classical bit information. At the end of this paper, we discuss the security of our protocol and show that our scheme can against both inside and outside attack.
keywords: Controlled quantum direct communication Authentication Quantum cryptography
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基于四粒子簇态的带认证的受控量子安全直接通信
摘要:本文提出了新的基于四粒子簇态带认证的受控量子安全直接通信协议。通信双方通过事先共享的身份串来验证对方的身份以防止窃听者伪造通信方。我们利用哈希函数和每次都不同的随机数来生成该身份认证信息,以防止窃听者可以通过统计分析来获取身份串的相关信息。在该协议中,由控制者保留簇态粒子的其中一个粒子作为控制粒子,发送者利用两个粒子编码两比特的信息进行通信。在本文的最后,我们分析了该协议的安全性,证明了该协议对常见的攻击方式具有良好的抵抗效果。
关键词: 受控量子安全直接通信 认证 量子密码
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