Data Post-processing Method of Quantum Key Distribution System
A quantum key distribution and data technology, which is applied in the field of Internet communication, can solve problems such as efficiency mismatch and damage to the security of the QKD system, and achieve the effects of ensuring security, improving quantum key distribution processing methods, and improving user experience
Active Publication Date: 2018-06-19
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in practical applications, the loopholes in detector efficiency may be fatal for practical quantum key distribution systems, because it is difficult to ensure that the two detectors are exactly the same in actual measurement, leading to the possibility that attackers may use methods such as time-shift attacks to use There is an obvious efficiency mismatch between the two detectors, so that the number of 0s and 1s obtained is not the same, so as to obtain information from them and destroy the security of the QKD system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0024] In the present invention, unless otherwise clearly specified...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a data post-processing method of a quantum key distribution system, comprising the following steps: respectively detecting a plurality of signals emitted by a sender; obtaining the detection efficiency and The detection efficiency of the second detector; obtain the security key according to the detection efficiency of the first detector and the detection efficiency of the second detector, or obtain the security key according to the detection efficiency of the first detector and the detection efficiency of the second detector key, phase errors, and bit errors to obtain a secure key. The processing method of the embodiment of the present invention obtains the security key through two different schemes, including the ideal situation without bit error rate and the actual situation with bit error, so as to better ensure the security of the quantum key distribution system, Improve the existing quantum key distribution processing method to improve user experience.
Description
technical field [0001] The invention relates to the technical field of Internet communication, in particular to a data post-processing method of a quantum key distribution system. Background technique [0002] In theory, QKD (quantum key distribution, quantum key distribution) provides unconditional security based on the laws of physics. However, in practical applications, the loopholes in detector efficiency may be fatal for practical quantum key distribution systems, because it is difficult to ensure that the two detectors are exactly the same in actual measurement, leading to the possibility that attackers may use methods such as time-shift attacks to use There is an obvious efficiency mismatch between the two detectors, so that the number of 0s and 1s obtained is not the same, so that information can be obtained from them, which destroys the security of the QKD system. Contents of the invention [0003] The present invention aims at solving one of the technical proble...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
Inventor 马雄峰赵琦
Owner TSINGHUA UNIV