Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum man-in-the-middle attack on the calibration process of quantum
  key distribution   Quantum key distribution (QKD) protocol has been proved to provide
unconditionally secure key between two remote legitimate users in theory. Key
distribution signals are transmitted in a quantum channel which is established
by the calibration process to meet the requirement of high count rate and low
error rate. All QKD security proofs implicitly assume that the quantum channel
has been established securely. However, the eavesdropper may attack the
calibration process to break the security assumption of QKD and provide
precondition to steal information about the final key successfully. Inspired by
N. Jain et al., Phys. Rev. Lett.107,110501(2011), we reveal the security risk
of the calibration process of a passive-basis-choice BB84 QKD system by
launching a quantum man-in-the-middle attack which intercepts all calibration
signals and resends faked ones. Large temporal bit-dependent or basis-dependent
detector efficiency mismatch can be induced. Then we propose a basis-dependent
detector efficiency mismatch (BEM) based faked states attack on a single photon
BB84 QKD to stress the threat of BEM. Moreover, the security of single photon
QKD systems with BEM is studied simply and intuitively. Two effective
countermeasures are suggested to remove the general security risk of the
calibration process.

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The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an