Alliance block chain data encryption method based on quantum key

Abstract

The invention discloses an alliance block chain data encryption method based on quantum keys, and the method comprises the steps: distributing an original key through a first quantum key distribution machine, and distributing a hybrid key through a second quantum key distribution machine; the first block chain node and the second block chain node respectively select keys from respective original keys and mixed keys according to a preset mixed proportion, and then are mixed in an XOR mode or in an AES encryption mode to finally obtain a working key; one part of the working key needs to be backfilled to the original key, so that the repeated use of the original key is avoided, and the original key is continuously updated and is safer; and the other part is a key used for data encryption. The key is distributed twice, so that the risk that the key is possibly leaked in single distribution is avoided, the key exposure risk and the cracking risk are reduced in a key mixing mode, and the data security of the network is improved.

Description

technical field [0001] The invention relates to the field of consortium chain encryption technology, in particular to a quantum key-based consortium blockchain data encryption method. Background technique [0002] Blockchain is an innovative application model of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies in the Internet era. Its application has been extended to the Internet of Things, intelligent manufacturing, supply chain management, digital asset transactions and other fields . [0003] The blockchain network includes multiple blockchain nodes connected by optical fiber links. When data transmission is performed between different blockchain nodes, cryptography is usually used to ensure the security of data transmission between nodes. At present, encryption and decryption speeds are usually used Fast symmetric encryption algorithm to encrypt the transmitted data. However, the symmetric ...

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Problems solved by technology

[0005] Purpose of the invention: The purpose of the invention is to provide a quantum key-based alliance block chain data encryption method, which solves the problem that the security of data transmission in the current block chain network depends on the security of the symmetric key. , leading to an increase in the possibility of the symmetric key being leaked, which in turn will cause damage to the security of the entire blockchain network

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