Anti-quantum-computing blockchain secret transaction system and anti-quantum-computing blockchain secret transaction methods based on P2P (Peer-to-Peer) symmetric key pools

Abstract

The invention relates to an anti-quantum-computing blockchain secret transaction system and anti-quantum-computing blockchain secret transaction methods based on P2P symmetric key pools. The system includes multiple user ends and a P2P storage network. Each user end configures a quantum key card, the P2P storage network configures the symmetric key pools, an initiating user end generates a specific function value, the same is combined with a private key of the local side to generate a transaction signature, and the initiating user end encrypts the transaction signature, and sends the same ontoa blockchain. A verifying user end generates a specific function value, the specific function value is combined with a key card of the local side and ID of a symmetric key pool to generate a key, anda transaction signature is obtained by decrypting of the key, then comparison with the specific function value is carried out, transaction verifying is realized, the P2P storage network stores the symmetric key pools, the P2P storage network has no central node, thus system security is improved, burdens of the user ends are also alleviated, setting of the key cards greatly reduces possibility ofstealing keys by malicious software, and a quantum computer cannot obtain a user public key, and thus cannot obtain a corresponding private key.

Description

technical field [0001] The invention relates to the field of block chains, in particular to a quantum computing-resistant block chain confidential transaction system and method based on a P2P symmetric key pool. 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] P2P storage is a kind of network storage based on P2P (Peer-to-Peer) technology, which organizes many machines in a peer-to-peer manner to provide users with large-capacity data storage services. This technology is the produc...

AI Technical Summary

Problems solved by technology

[0006] (1) Each client stores the symmetric key pool in the key card, which takes up a lot of space

[0007] (2) In the existing technology, the transmission and storage of the blockchain are not encrypted

[0008] (3) 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

[0009] (4) 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

[0010] (5) In the existing technology, the disclosure of the transfer-in wallet address and transfer-in amount in blockchain transactions may expose user privacy information

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