Block chain-based transfer processing method, device and system

Abstract

The invention discloses a block chain-based transfer processing method, device and system, and relates to the technical field of block chains. The method comprises the following steps: encrypting a transfer transaction according to a symmetric key to obtain a transaction ciphertext; sending a verification request to the first supervision node, so that the first supervision node verifies the transfer transaction; after the response information that the verification is passed is received, constructing the uplink transaction data, and sending the uplink transaction data to the block chain, wherein the uplink transaction data comprises a transaction ciphertext and at least one of first to fourth secret key ciphertexts obtained by encrypting a symmetric secret key based on a public key of a transfer-out party node, a public key of a first supervision node, a public key of a receiver node and a public key of a second supervision node. Through the above steps, partial supervision is changed from in-event and after-event supervision to pre-event supervision, so that supervision effectiveness is improved; and the privacy of user account data and transaction data is ensured on the premise of safety verifiability through combined use of a cryptographic technology.

Description

technical field [0001] The present invention relates to the field of block chain technology, in particular to a block chain-based transfer processing method, device and system. Background technique [0002] Blockchain technology, also known as distributed ledger technology, combines cryptography, P2P communication, consensus algorithm and other technologies at the bottom layer, providing a new computing paradigm and collaboration model that can establish trust at low cost in a weak trust environment. The main features of the blockchain include decentralization, openness and transparency, tamper-proof, and traceability. [0003] At present, the main pain points in the cross-border payment business scenario include: (1) The remittance speed is slow. A cross-border payment business needs to go through the systems of multiple banks to complete the clearing and bookkeeping between accounts. The entire remittance process generally takes 2 -3 days to complete; (2) The remittance f...

AI Technical Summary

Problems solved by technology

At present, most of the existing cross-border payment schemes deploy a blockchain node to synchronize all ledger data during the transaction consensus process, and conduct post-event supervision on the global ledger data through the perspective of God. The timeliness of supervision is low, and it is difficult to change the execution of transactions As a result, moreover, there is a risk of leakage of user account data and transaction data, and it is difficult to ensure the privacy of data

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