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Quantum key distribution method based on block chain

A technology of quantum key distribution and blockchain, which is applied in the field of quantum key distribution based on blockchain, can solve problems such as difficulty in meeting the needs of multiple users for applying for key pairs, low efficiency of key distribution, etc., and achieve Good realizability, reduced operational difficulty, and high space utilization

Active Publication Date: 2020-03-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to solve the problem that it is difficult to meet the needs of multiple users for applying for key pairs in the existing quantum key distribution scheme, and the problem that the key distribution efficiency is low in the existing quantum key distribution scheme, and to provide a safe, Efficient blockchain-based quantum key distribution method, in order to save resource consumption, reduce the number of classic and quantum channel security checks, ensure the legitimacy of the participant's identity and the correctness of the final key, and ensure higher communication Efficiency, so that a more practical, secure and efficient key pair distribution method can be realized

Method used

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  • Quantum key distribution method based on block chain
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Embodiment Construction

[0038] The design scheme of the present invention will be described in detail below with reference to the accompanying drawings and examples, but the present invention is not limited to this embodiment.

[0039] In this example, if figure 1 As shown, a blockchain-based quantum key distribution method is applied by the blockchain, user U a , user U b , set in user U a Nearby key pool C 1 , set in user U b Nearby key pool C 2 , and key pool C 1 Manager M 1 , key pool C 2 Manager M 2 In the public network environment formed, the user U a Nearby key pool C 1 and user U b Nearby key pool C 2 The same configuration, and connected through the public quantum channel; as figure 2 As shown, the quantum key distribution method is carried out according to the following steps:

[0040] Step 1: Initialization phase:

[0041] User U a Nearby key pool C 1 and user U b Nearby key pool C 2 After invoking the quantum key distribution protocol and generating key streams respec...

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Abstract

The invention discloses a quantum key distribution method based on a block chain, which comprises the following steps that two key pools separated from two places exist, the configurations of the twokey pools are the same and are connected through public quantum channels, a quantum key distribution (QKD) protocol is called to generate key streams, and the key streams are respectively stored in corresponding positions of the two key pools; wherein the two key pools are respectively connected with respective key pool managers, and the key pool managers are used for managing the key pools, updating storage addresses in the key pools and being responsible for contacting with users; wherein the two key pool managers are connected with a block chain, and the block chain is used for recording transactions between users and the key pool managers. The invention aims to solve the problem that the existing quantum key generation and distribution efficiency is low, and improve the key distribution efficiency under the condition of ensuring the key generation and distribution safety.

Description

technical field [0001] The invention belongs to the application field of modern cryptography, in particular to a blockchain-based quantum key distribution method. Background technique [0002] Key distribution and key management are one of the most critical technologies in modern cryptography, involving many aspects of cryptography, including key generation, distribution, storage, application, etc. Many existing security applications use public key encryption algorithms to distribute key pairs. But with the rise of quantum computers and quantum computing, classical cryptographic algorithms, including symmetric encryption algorithms (such as DES, AES) and public key encryption algorithms (such as RSA, ECC), are facing huge security challenges. [0003] With the emergence of quantum cryptography, new vitality has been added to the field of information security. Quantum cryptography is the product of the combination of quantum mechanics and classical cryptography. Its security...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L9/32G06Q40/04
CPCG06Q40/04H04L9/0858H04L9/0894H04L9/0897H04L9/3247
Inventor 石润华苟湘淋石泽李坤昌
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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