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Safe quantum network encoding method based on quantum homomorphic encryption

A quantum state and quantum technology, applied in the field of quantum communication network technology and quantum cryptography, can solve problems such as insufficient security, and achieve the effect of ensuring security and integrity, and safe cross-transmission

Pending Publication Date: 2021-12-31
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the first intermediate node in the butterfly network is dishonest, then the node may obtain the quantum state from the channel and recover the quantum state information of the two senders to be transmitted, resulting in insufficient security of the scheme
From the shortcomings of this scheme, it can be found that this is a security issue in which the sender passes the private data to the intermediate node for encoding, which involves both the content of privacy data protection and the content of entrusted calculation

Method used

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  • Safe quantum network encoding method based on quantum homomorphic encryption
  • Safe quantum network encoding method based on quantum homomorphic encryption
  • Safe quantum network encoding method based on quantum homomorphic encryption

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be fully and clearly described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0019] The present invention provides a secure quantum network encoding method based on quantum homomorphic encryption, which mainly includes the following steps:

[0020] Step 1: Sender A 1 and A 2 The quantum states to be transmitted are and where |α| 2 +|β| 2 = 1, |γ| 2 +|λ| 2 =1. A 1 and A 2 Share two pairs of Bell states:

[0021]

[0022]

[0023] where sender A 1 has a quantum state a 1,1 and a 1,2 , sender A 2 has a quantum state a 2,1 and a 2,2 .

[0024] During the first round of quantum teleportation, the manipulated quantum state is and sender A 1 in quantum s...

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Abstract

The invention belongs to the field of quantum communication network technology and quantum cryptography, and particularly relates to a safe quantum network encoding method based on quantum homomorphic encryption. Quantum homomorphic encryption is applied to quantum network encoding, and the quantum state of the measurement result of the sender is encrypted, so that the intermediate node in the butterfly network cannot obtain the quantum state information to be transmitted of the sender, and safe quantum network encoding is realized.

Description

technical field [0001] The invention relates to a secure quantum network encoding method based on quantum homomorphic encryption, belonging to the fields of quantum communication network technology and quantum cryptography. Background technique [0002] In the past ten years, the rapid development of quantum information is inseparable from the research of quantum cryptography by researchers. In particular, quantum teleportation technology and quantum key distribution technology have been proposed one after another. The former realizes the long-distance transmission of quantum states by using the characteristics of quantum entanglement states, and the latter uses the theorem that quantum states cannot be accurately cloned to complete a perfect and safe quantum Key distribution makes quantum communication network technology also come into being. [0003] In 2006, Hayashi et al. first proposed a quantum network coding scheme based on the butterfly network model, and realized t...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04L9/08
CPCH04L9/008H04L9/0852Y04S40/20
Inventor 陈玉玲程振文陈秀波徐刚杨义先
Owner GUIZHOU UNIV
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