A proposal of authentication method for BB84 protocol

Li Weigang

The article is a combination of the following BB84 protocol communication schematic diagram , brief description of the protocol for the crack method.

Daniel Fernando Urrego González

Sufyan T. F. Al-Janabi

Quantum key distribution (QKD) is a method using some properties of quantum mechanics to create a secret shared cryptographic key even if an eavesdropper has access to unlimited computational power. All QKD protocols require that the parties have access to an authentic channel. Otherwise, QKD is vulnerable to man-in-themiddle attacks. This paper studies QKD from this point of view, emphasizing the necessity and sufficiency of using unconditionally secure authentication in QKD. In this work, a hybrid unconditionally secure authentication strategy is proposed for QKD protocols. It is based on a mixture of normal application of authentication codes and the so-called "counter-based" authentication method such that to achieve a better trade off between security and efficiency (in terms of the required size of initially shared secret data). Based on this strategy, a complete authenticated QKD protocol is described for a specific implementation of the well-known BB84 protocol. Some advantages of our protocol in comparison to other proposals are also highlighted.

Sufyan T. F. Al-Janabi

Quantum key distribution (QKD) is a method using some properties of quantum mechanics to create a secret shared cryptographic key even if an eavesdropper has access to unlimited computational power. All QKD protocols require that the parties have access to an authentic channel. Otherwise, QKD is vulnerable to man-in-the-middle attacks. This paper studies QKD from this point of view, emphasizing the necessity and sufficiency of using unconditionally secure authentication in QKD. In this work, a new technique of using unconditionally secure authentication is proposed for quantum cryptosystems. This technique is based on a hybrid of normal application of authentication codes and the so-called “counter-based” authentication method such that to achieve a better trade-off between security and efficiency (in terms of the required size of initially shared secret data). Based on this strategy, an authenticated version of a typical QKD protocol (the well-known BB84 protocol) is described. Some advantages of our protocol in comparison to other proposals are also highlighted.

Daniel Fernando Urrego González

Jing Gong, Wen Zhang, Deng Yuanqing +2 more

Now it is a hot topic to use the character of quantum for quantum encrypt communication in password and quantum information world.So the BB84 protocol with identity authentication is proposed.In production and disposition of the BB84 protocol with identity authentication,users can authenticate identity each other by the authentication key,which can not only strengthen its security,but also improve efficiency.