Quantum Dialogue with Authentication Based on Bell States

Quantum Dialogue with Authentication Based on Bell States
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基于贝尔态的量子对话与认证

DOI:
10.1007/s10773-012-1276-6
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发表时间:
2012-08
影响因子:
1.4
通讯作者:
Li, Xiaoping
Li, Xiaoping
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Shen, Dongsu;Ma, Wenping;Yin, Xunru;Li, Xiaoping

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我们提出了一种经过身份验证的量子对话协议,该协议基于共享的私有量子纠缠通道。在此协议中,EPR 对在四种贝尔状态之一中随机准备用于通信。通过对共享的 EPR 对执行四次泡利运算来编码其共享的认证密钥和秘密消息,两个合法用户可以在没有第三方认证器的帮助下实现相互身份认证和量子对话。此外,由于利用用于安全通信的EPR对来实现认证,并且整个认证过程包含在直接安全通信过程中,因此该协议不需要额外的粒子来实现认证。更新后的认证密钥为对方下次认证和直接通信提供了新的认证密钥。与其他采用身份验证协议的安全通信相比,由于身份验证和直接通信的结合,这种通信更加安全和高效。安全分析表明,该方案能够抵御窃听攻击、冒充攻击和中间人(MITM)攻击。
We propose an authenticated quantum dialogue protocol, which is based on a shared private quantum entangled channel. In this protocol, the EPR pairs are randomly prepared in one of the four Bell states for communication. By performing four Pauli operations on the shared EPR pairs to encode their shared authentication key and secret message, two legitimate users can implement mutual identity authentication and quantum dialogue without the help from the third party authenticator. Furthermore, due to the EPR pairs which are used for secure communication are utilized to implement authentication and the whole authentication process is included in the direct secure communication process, it does not require additional particles to realize authentication in this protocol. The updated authentication key provides the counterparts with a new authentication key for the next authentication and direct communication. Compared with other secure communication with authentication protocols, this one is more secure and efficient owing to the combination of authentication and direct communication. Security analysis shows that it is secure against the eavesdropping attack, the impersonation attack and the man-in-the-middle (MITM) attack.
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