SYMMETRIC COLLECTIVE ATTACKS FOR THE EAVESDROPPING OF SYMMETRIC QUANTUM KEY DISTRIBUTION

We consider the collective eavesdropping of the BB84 and six-state protocols. Since these protocols are symmetric in the eigenstates of conjugate bases, we consider collective attacks having the same kind of symmetry. We then show how these symmetric collective attacks are sufficiently strong in order to minimize the Devetak–Winter rates. In fact, it is quite easy to construct simple examples able to reach the unconditionally secure key rates of these protocols.

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Quantum key distribution with mismatched measurements over arbitrary channels

Quantum Information and Computation ◽

10.26421/qic17.3-4-2 ◽

2017 ◽

Vol 17 (3&4) ◽

pp. 209-241

Author(s):

Walter O. Krawec

Keyword(s):

Quantum Channel ◽

Quantum Key Distribution ◽

Key Distribution ◽

Rate Equations ◽

Quantum Channels ◽

Multiple Channel ◽

Symmetric Quantum ◽

Channel Statistics ◽

Quantum Protocol ◽

Measurement Bases

In this paper, we derive key-rate expressions for different quantum key distribution protocols. Our key-rate equations utilize multiple channel statistics, including those gathered from mismatched measurement bases - i.e., when Alice and Bob choose incompatible bases. In particular, we will consider an Extended B92 and a two-way semi-quantum protocol. For both these protocols, we demonstrate that their tolerance to noise is higher than previously thought - in fact, we will show the semi-quantum protocol can actually tolerate the same noise level as the fully quantum BB84 protocol. Along the way, we will also consider an optimal QKD protocol for various quantum channels. Finally, all the key-rate expressions which we derive in this paper are applicable to any arbitrary, not necessarily symmetric, quantum channel.

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The simulation of a symmetric quantum key distribution

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/434/1/012023 ◽

2018 ◽

Vol 434 ◽

pp. 012023

Author(s):

M Delina ◽

B H Iswanto ◽

H Permana ◽

S Muhasyah

Keyword(s):

Quantum Key Distribution ◽

Key Distribution ◽

Symmetric Quantum

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Six-State Symmetric Quantum Key Distribution Protocol

Journal of Quantum Information Science ◽

10.4236/jqis.2015.52005 ◽

2015 ◽

Vol 05 (02) ◽

pp. 33-40 ◽

Cited By ~ 3

Author(s):

Makhamisa Senekane ◽

Mhlambululi Mafu ◽

Francesco Petruccione

Keyword(s):

Quantum Key Distribution ◽

Key Distribution ◽

Symmetric Quantum ◽

Quantum Key Distribution Protocol

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Quantum key distribution with two-way authentication

Optical and Quantum Electronics ◽

10.1007/s11082-021-02845-8 ◽

2021 ◽

Vol 53 (6) ◽

Author(s):

Xiaobo Zheng ◽

Zhiwen Zhao

Keyword(s):

Quantum Key Distribution ◽

Quantum Physics ◽

Key Distribution ◽

Identity Authentication ◽

Symmetric Encryption ◽

Measurement Device ◽

Random Functions ◽

Authentication System ◽

Conjugate Bases ◽

Quantum Key Distribution Protocol

AbstractQuantum key distribution uses the principle of quantum physics to realize unconditionally secure key distribution protocol. But this kind of security needs to be based on the authenticated classical channel. Although there are quantum key distribution protocols without classical channel, authentication is still needed. In the process of key distribution, authentication is not considered, which is also a problem of quantum key distribution protocol. In this paper, a quantum key distribution protocol with two-way authentication is proposed. Identity authentication is carried out at the same time of key distribution. If the identity authentication fails, the key distribution protocol cannot be carried out. If the key distribution protocol is aborted, the identity authentication is not successful. The conclusion of this paper is based on a central authentication system supported by symmetric encryption theory, which uses pseudo-random functions, multiple sets of quantum conjugate bases and Measurement-device-independent technology to simultaneously achieve two-way authentication and key distribution.

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