Anti-quantum computing blockchain transaction method based on asymmetric key pool

Abstract

The invention discloses an anti-quantum computing block chain transaction method based on an asymmetric key pool, including multiple clients. The same key pool is stored in the quantum key card configured at each user side; and the initiating user end uploads the signed transaction to the network platform, the receiving user end for transaction verification combines the public key pointer random number of the initiating user end with the own secret key pool to extract the public key of the initiating user end so as to extract and transfer out the signature, and the transaction verification isrealized through the transfer-out signature. A quantum key card is used for storing and disclosing a public key, the quantum key card is independent hardware isolation equipment, the possibility thatthe key is stolen by malicious software or malicious operation is reduced, then a corresponding private key is protected, a digital signature based on the public key and the private key is further encrypted by a random number key, and the random number key is encrypted by the private key to form an encrypted digital signature. Even in the presence of a quantum computer, it is difficult to derive the private key, so that the scheme is not easily cracked by the quantum computer.

Description

Technical field [0001] The present invention relates to the field of block chains, in particular to a transaction method of block chains. Background technique [0002] Blockchain is a brand new distributed infrastructure and computing paradigm. It uses an orderly chained data structure to store data, uses consensus algorithms to update data, and uses cryptography to ensure data security. In blockchain-based transactions, ensuring transaction data security and customer privacy 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 know, quantum computers have great potential for password cracking. Today's mainstream asymmetric (public key) encryption algorithms, such as RSA encryption algorithms, are mostly based on the two mathematical problems of factorization of large integers or the calculation of discrete logarithms over finite...

AI Technical Summary

Problems solved by technology

[0005] (1) 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

[0006] (2) 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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