An anti-quantum computing block chain transaction method and system based on a symmetric key pool server

Abstract

The invention relates to an anti-quantum computing block chain transaction method and system based on a symmetric key pool server, a plurality of participated users belong to different intranets, theusers in the different intranets are in communication connection to form a block chain network, and the intranets are further configured with servers in communication connection with all the users inthe intranet; wherein each user and the server are respectively provided with a secret key card, and a server public / private key, a symmetric secret key pool and an intranet public key set of the userare stored in the secret key card of the server; an own private key and a server public key are stored in the user key card; wherein symmetric key pools in all server key cards are the same, and public keys of all users in the intranet are stored in the intranet public key set; the user of the initiator generates a transaction signature for the unsigned transaction, and sends the transaction signature to the server belonging to the same intranet for encryption; and obtaining the encrypted transaction signature from the server belonging to the same intranet, storing the encrypted transaction signature in the transaction and broadcasting the encrypted transaction signature in the block chain network.

Description

technical field [0001] The present invention relates to the field of block chains, in particular to a transaction method and system of block chains. Background technique [0002] Blockchain is a brand-new distributed infrastructure and computing paradigm. It uses an ordered chained data structure to store data, uses consensus algorithms to update data, and uses cryptography to ensure data security. In blockchain-based transactions, ensuring the data security of transactions and the privacy of customers is a necessary condition for the further development of blockchain. For this reason, cryptography technology, especially public key cryptography, has been widely used in blockchain. [0003] As most people understand, quantum computers have great potential for code-breaking. Today's mainstream asymmetric (public key) encryption algorithms, such as the RSA encryption algorithm, are mostly based on the two mathematical problems of factorization of large integers or calculation...

AI Technical Summary

Problems solved by technology

[0005] (1) In the existing technology, the transmission and storage of the blockchain are not encrypted

[0006] (2) Since the quantum computer can quickly obtain the corresponding private key through the public key, the existing blockchain transaction method is easily cracked by the quantum computer

[0007] (3) In the existing technology, the input and output of digital signatures based on public and private keys can be known by the enemy. In the presence of quantum computers, the private key may be deduced, causing the blockchain system to be cracked by quantum computers

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