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Physical Review A

Addendum to “Quantum key distribution without alternative measurements”

Adán Cabello

Published Jun 26, 2001• 17 citations
Publisher

Abstract

Recently, Zhang, Li, and Guo have proposed a particular eavesdropping attack [Phys. Rev. A 63, 036301 (2001)] that shows that my quantum key distribution protocol based on entanglement swapping [Phys. Rev. A 61, 052312 (2000)] is insecure. However, security against this attack can be attained with a simple modification. In addition, a simpler version of the protocol using four qubits is introduced.

DOI
10.1103/physreva.64.024301

Related papers

Reply to “Comment on ‘Quantum key distribution without alternative measurements’ ” [Phys. Rev. A63, 036301 (2001)]

Adán Cabello

Recently, Zhang, Li, and Guo have proposed a particular eavesdropping attack [Phys. Rev. A {\bf 63}, 036301 (2001), quant-ph/0009042] which shows that my quantum key distribution protocol based on entanglement swapping [Phys. Rev. A {\bf 61}, 052312 (2000), quant-ph/9911025] is insecure. However, security against this attack can be attained with a simple modification. In addition, a simpler version of the protocol using four qubits is introduced.

arXiv:quant-ph/0009051•Physical Review A•Feb 13, 2001•32 citations

A Modified Protocol of Quantum Key Distribution Based on Entanglement Swapping

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By comparing Cabello's addendum to his quantum key distribution protocol [Phys. Rev. A 64 (2001) 024301], we propose a more convenient modified protocol based on the entanglement swapping which is secure against the eavesdropping strategy addressed by Zhang et al. [Phys. Rev. A 63 (2001) 036301] and other existing types of attack.

Chinese Physics Letters•Aug 23, 2007•6 citations

Comment on “Quantum key distribution without alternative measurements” [Phys. Rev. A61, 052312 (2000)]

Yong-Sheng Zhang, Chuan‐Feng Li, Guang‐Can Guo

In a recent paper [A. Cabello, Phys. Rev. A 61, 052312 (2000)], a quantum key distribution protocol based on entanglement swapping was proposed. However, in this Comment, it is shown that this protocol is insecure if Eve uses a special strategy to attack.

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Comment on "Quantum key distribution via quantum encryption"

Fei Gao, Su‐Juan Qin, Qiaoyan Wen +1 more

In the paper [Zhang, Li and Guo, Phys. Rev. A 64, 024302 (2001)], a quantum key distribution protocol based on quantum encryption was proposed, in which the quantum key can be reused. However, it is shown that, if Eve employs a special strategy to attack, this protocol becomes insecure because of the reused quantum key. That is, Eve can elicit partial information about the key bits without being detected. Finally, a possible improvement of the Zhang-Li-Guo protocol is proposed.

arXiv:quant-ph/0505226•May 31, 2005•0 citations

A NOVEL ATTACK STRATEGY ON ENTANGLEMENT SWAPPING QKD PROTOCOLS

Stefan Schauer, MARTIN SUDA

Li et al. presented a protocol [International Journal of Quantum Information4(6) (2006) 899–906] for quantum key distribution based on entanglement swapping. In this protocol, they use random and certain bits to construct a classical key, and they claim that this key is secure. In our article, we show that the protocol by Li et al. is insecure, presenting a new type of attack strategy which gives an adversary full information about the key without being detected. This strategy is based on entanglement swapping, too, and manages to preserve the correlation between the measurement results of the legitimate parties. Further, we present a modified version of the protocol and show that it is secure against this new attack strategy.

arXiv:0805.4322•International Journal of Quantum Information•Aug 1, 2008•3 citations

Entanglement swapping secures multiparty quantum communication

Juhui Lee, Soojoon Lee, Jaewan Kim +1 more

Extending the eavesdropping strategy devised by Zhang, Li, and Guo [Zhang, Li, and Guo, Phys. Rev. A 63, 036301 (2001)], we show that the multiparty quantum communication protocol based on entanglement swapping, which was proposed by Cabello (e-print quant-ph∕0009025), is not secure. We modify the protocol so that entanglement swapping can secure multiparty quantum communication, such as multiparty quantum key distribution and quantum secret sharing of classical information, and show that the modified protocol is secure against the Zhang-Li-Guo strategy for eavesdropping as well as the basic intercept-resend attack.

arXiv:quant-ph/0309185•Physical Review A•Sep 8, 2004•28 citations
Recently, Zhang, Li, and Guo have proposed a particular eavesdropping attack [Phys. Rev. A 63, 036301 (2001)] that shows that my quantum key distribution protocol based on entanglement swapping [Phys. Rev. A 61, 052312 (2000)] is insecure. However, security against this attack can be attained with a simple modification. In addition, a simpler version of the protocol using four qubits is introduced.
Li et al. presented a protocol [International Journal of Quantum Information4(6) (2006) 899–906] for quantum key distribution based on entanglement swapping. In this protocol, they use random and certain bits to construct a classical key, and they claim that this key is secure. In our article, we show that the protocol by Li et al. is insecure, presenting a new type of attack strategy which gives an adversary full information about the key without being detected. This strategy is based on entanglement swapping, too, and manages to preserve the correlation between the measurement results of the legitimate parties. Further, we present a modified version of the protocol and show that it is secure against this new attack strategy.
Extending the eavesdropping strategy devised by Zhang, Li, and Guo [Zhang, Li, and Guo, Phys. Rev. A 63, 036301 (2001)], we show that the multiparty quantum communication protocol based on entanglement swapping, which was proposed by Cabello (e-print quant-ph∕0009025), is not secure. We modify the protocol so that entanglement swapping can secure multiparty quantum communication, such as multiparty quantum key distribution and quantum secret sharing of classical information, and show that the modified protocol is secure against the Zhang-Li-Guo strategy for eavesdropping as well as the basic intercept-resend attack.