Finite Key Size Analysis of Two-Way Quantum Cryptography

Shaari, Jesni Shamsul; Mancini, Stefano

doi:10.3390/e17052723

“…In particular, entangled photon two-way protocols based on two [ 4 ] (also called a ping-pong (pp) protocol) and four ( Ψ ∓ , Φ ∓ ) [ 6 ] Bell states, on the one hand and a single photon deterministic Lucamarini-Mancini (LM05) protocol, on the other [ 1 , 19 ]. Several varieties, modifications, and generalisations of the latter protocol are given in [ 11 , 12 , 24 , 27 ]. Two varieties were implemented in [ 7 ] and [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Can Two-Way Direct Communication Protocols Be Considered Secure?

Pavičić

¹

2017

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We consider attacks on two-way quantum key distribution protocols in which an undetectable eavesdropper copies all messages in the message mode. We show that under the attacks, there is no disturbance in the message mode and that the mutual information between the sender and the receiver is always constant and equal to one. It follows that recent proofs of security for two-way protocols cannot be considered complete since they do not cover the considered attacks.

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“…In particular, entangled photon two-way protocols based on two [ 7 ] (also called a ping-pong (pp) protocol) and four (

) [ 8 ] Bell states, on the one hand and a single photon deterministic Lucamarini–Mancini (LM05) protocol, on the other [ 9 , 10 ]. Several varieties, modifications, and generalisations of the latter protocol are given in [ 11 , 12 , 13 , 14 ]. Two varieties were implemented in [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

How Secure Are Two-Way Ping-Pong and LM05 QKD Protocols under a Man-in-the-Middle Attack?

Pavičić

¹

2021

Entropy

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We consider a man-in-the-middle attack on two-way quantum key distribution ping-pong and LM05 protocols in which an eavesdropper copies all messages in the message mode, while being undetectable in the mode. Under the attack there is therefore no disturbance in the message mode and the mutual information between the sender and the receiver is always constant and equal to one and messages copied by the eavesdropper are always genuine. An attack can only be detected in the control mode but the level of detection at which the protocol should be aborted is not defined. We examine steps of the protocol to evaluate its security and find that the protocol should be redesigned. We also compare it with the security of a one-way asymmetric BB84-like protocol in which one basis serves as the message mode and the other as the control mode but which does have the level of detection at which the protocol should be aborted defined.

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“…In particular, entangled photon twoway protocols based on two [7] (also called a ping-pong (pp) protocol) and four (Ψ ∓ , Φ ∓ ) [8] Bell states, on the one hand and a single photon deterministic Lucamarini-Mancini (LM05) protocol, on the other [9,10]. Several varieties, modifications, and generalisations of the latter protocol are given in [11][12][13][14]. Two varieties were implemented in [15] and [16].…”

Section: Introductionmentioning

confidence: 99%

How Secure Are Two-Way Ping-Pong and LM05 QKD Protocols under a Man-in-the-Middle Attack?

Pavicic

2021

Preprint

0

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We consider a man-in-the-middle attack on two-way quantum key distribution ping-pong and LM05 protocols in which an eavesdropper copies all messages in the message mode, while being undetectable in the mode. Under the attack there is therefore no disturbance in the message mode and the mutual information between the sender and the receiver is always constant and equal to one and messages copied by the eavesdropper are always genuine. An attack can only be detected in the control mode but the level of detection at which the protocol should be aborted is not defined. We examine steps of the protocol to evaluate its security and find that the protocol should be redesigned. We also compare it with the security of a one-way asymmetric BB84-like protocol in which one basis serves as the message mode and the other as the control mode but which does have the level of detection at which the protocol should be aborted defined.

show abstract

Finite Key Size Analysis of Two-Way Quantum Cryptography

Cited by 10 publications

References 23 publications

RETRACTED ARTICLE: Can Two-Way Direct Communication Protocols Be Considered Secure?

RETRACTED ARTICLE: Can Two-Way Direct Communication Protocols Be Considered Secure?

How Secure Are Two-Way Ping-Pong and LM05 QKD Protocols under a Man-in-the-Middle Attack?

How Secure Are Two-Way Ping-Pong and LM05 QKD Protocols under a Man-in-the-Middle Attack?

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