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Quantum secret sharing system, a sharing method thereof and error correction method

A technology of quantum secret and error correction method, applied in the field of quantum secret sharing system, can solve problems such as optical loss, and achieve the effect of reducing loss, high error correction efficiency and small calculation amount

Active Publication Date: 2017-02-22
ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to avoid the shortcomings of the above-mentioned prior art, and propose a quantum secret sharing system and its sharing method and error correction method, which can improve the problem of light loss in the transmission and processing of complex photon sequences

Method used

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  • Quantum secret sharing system, a sharing method thereof and error correction method
  • Quantum secret sharing system, a sharing method thereof and error correction method
  • Quantum secret sharing system, a sharing method thereof and error correction method

Examples

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Embodiment 1

[0058] Both a quantum secret error correction method and a secret sharing method provided in this embodiment are applied to a three-party quantum secret sharing platform including a sending end and two receiving ends, wherein the sending end is Alice, and the two receiving ends are respectively Bob and Charlie end. Alice, as the sending end, is provided with a quantum key generating device for generating the original key. The quantum key generating device is implemented based on a quantum random number generator, and generates Bob's terminal and The original key on the Charlie side.

[0059] The quantum secret sharing system of this embodiment is installed on the above-mentioned three-party quantum secret sharing platform, such as figure 1 shown, including:

[0060] The trigger unit is used to trigger the Alice end to generate the original key of the Bob end and the Charlie end respectively; the sending unit is used to send the original key generated by the Alice end to the ...

Embodiment 2

[0091] This embodiment provides a quantum secret error correction method, a quantum secret sharing method and a quantum secret sharing system.

[0092] In the quantum secret error correction algorithm, the initial key of the sending end and the shared keys of multiple receiving ends are corrected, so that the initial key of the sending end and the shared keys of multiple receiving ends conform to the logical operation relationship. Compared with Embodiment 1, this algorithm is applied to a multi-party quantum secret sharing platform including a sender and multiple receivers, and its error correction algorithm can be obtained in the same way as Embodiment 1, and will not be repeated here.

[0093] In terms of the quantum secret sharing method, similarly, this embodiment adopts the "divergent" sharing form, with the sending end as the center, to share secrets with multiple receiving ends respectively, which largely solves the problem of large amount of computation and difficult o...

Embodiment 3

[0096] combined with Figure 4 , the quantum secret-based error correction method and the secret sharing method provided in this embodiment are both applied to a three-party quantum secret sharing platform including a sending end and two receiving ends. Wherein, the sending end is Alice, and the two receiving ends are respectively Bob and Charlie.

[0097] The quantum secret sharing system of this embodiment is installed on the above-mentioned three-party quantum secret sharing platform, including: a triggering unit, used to trigger Alice to generate the original keys of Bob and Charlie respectively; The generated original key is sent to the corresponding Bob end and Charlie end respectively; the receiving unit is used to receive the original key from Alice end at the receiving end, and uses the received result as the corresponding shared key; the logic operation unit is used to Calculate the check codes of each shared key and each original key; the error correction unit is u...

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Abstract

The invention relates to the technical field of quantum communication, and especially relates to a sharing method of a quantum secret sharing system. The method comprises the following steps: S1: calculating a system error rate; S2: determining a check matrix according to the system error rate; S3: obtaining a check code of an initial key according to the check matrix; S4: performing error correction on a logical operation result of the initial key and a shared key of a receiving terminal by using the check code of the initial key; S5: judging whether the error correction is successful; S6: if the error correction is successful, stopping the operation; and if the error correction is not successful, then adjusting the code rate to obtain a new initial key and a new shared key, and executing steps S3 to S6 by the initial key and the shared key with the code rate adjusted until the error correction is successful or a preset maximum error correction time is reached. The invention further relates to a quantum secret sharing system and a sharing method thereof. According to the sharing method provided by the invention, multi-party information interaction is adopted, the original key is sent to at least two receiving terminals by a sending terminal, and the problems of dissipation, error code and the like in a secret sharing process are reduced.

Description

technical field [0001] The present invention relates to the technical field of quantum communication, in particular to the technical field of quantum key distribution, and in particular to a quantum secret sharing system, a sharing method, and an error correction method. Background technique [0002] In some occasions, in order to allow multiple people to bear the risk of protecting secret information, or to strengthen the confidentiality of a certain secret information, multiple participants need to participate in the protection of secret information. For example, the control and launch of missiles, the passage of important places, and the entry into force of wills must be attended by two or more people at the same time to take effect, that is, secrets need to be distributed to multiple people for joint management. This situation can be achieved by splitting secret information into several parts and jointly managed by several participants. This method of protecting informat...

Claims

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/085H04L9/0852
Inventor 富尧任鹏飞卢阳
Owner ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
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