Quantum blockchain construction method based on entrusting profit certification extension

Abstract

The invention provides a quantum blockchain construction method based on entrusting profit certification extension, which comprises the following steps: voting by whole network nodes according to theproportion of owned blockchain profit, and electing k super nodes from the whole network nodes; preparing and distributing entangled quantum pairs between each node and each super node, and establishing a QKD channel; generating a security key by the node intending to publish the transaction and the corresponding k super nodes through a QKD channel; printing a verification label on the transactioninformation through the security key by adopting a verification algorithm and then broadcasting the transaction information by the node intending to publish the transaction; respectively receiving the transaction information and then verifying the transaction information by the super nodes; sorting the transaction information in the current time window to generate blocks by the super nodes; negotiating with each other by every two of the k super nodes, if a final block exists, performing broadcasting through the super nodes, and receiving the final block and then adding the final block into the last received block by the common nodes until all the super nodes complete a block output process.

Description

technical field [0001] The present invention relates to the technical field of block chain, and more specifically, relates to a method for constructing a quantum block chain based on entrusted proof of rights and interests expansion. Background technique [0002] As a distributed ledger technology, blockchain has the characteristics of decentralization, transparency, non-tampering, consensus trust, and cross-platform. It has been widely used in electronic currency, supply chain logistics, and intellectual property protection. However, when the quantum era is approaching, the hash algorithm associated with its mining and previous blocks will be increased by the Quantum Grover algorithm to increase the risk of being attacked by search collisions, and the Elliptic Curve Digital Signature Algorithm (ECDSA) and RSA digital signature used for signatures Under the threat of quantum Shor's algorithm, the algorithms such as are also in jeopardy. [0003] In response to these problem...

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Problems solved by technology

[0005] In order to overcome the defects of high expansion cost and inability to be widely used in the above-mentioned prior art, the present invention provides a quantum block chain construction method based on entrusted proof of rights and interests expansion. Super nodes are obtained through elections, and each node and the elected Super nodes establish QKD channels, which can effectively reduce their expansion costs

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