Data processing method, device and equipment and storage medium

Abstract

The embodiment of the invention discloses a data processing method and device, equipment and a storage medium; the data processing method comprises the steps: transmitting, by a first business node, business data information to a second business node, so as to enable the second business node to obtain data signature information, wherein a first key parameter and a second key parameter in the datasignature information are related to the random parameter, and the random parameter is jointly determined by the second service node based on the node private key and the service data information; performing signature verification on the received data signature information based on the first key parameter and the second key parameter, and adding a signature verification result obtained by signature verification to a verification result set; searching a target signature verification result meeting a legal signature verification condition in the verification result set; and if the number of signatures of the target signature verification result meets the aggregation signature condition, performing aggregation signature on the counted data signature information. By adopting the embodiment ofthe invention, the network complexity of the aggregation signature can be reduced.

Description

technical field [0001] The present application relates to the technical field of blockchain, and in particular to a data processing method, device, equipment and storage medium. Background technique [0002] In digital signature applications, sometimes multiple signers are required to sign multiple messages or the same message. This phenomenon can be called multi-signature or aggregate signature. It can be understood that, in the multi-signature application scenario, when the aggregator participating in the aggregate signature receives the data signature information corresponding to the same message to be signed sent by the signer, it can perform aggregate signature on the received data signature information, To obtain the aggregated signature information corresponding to the message to be signed. Among them, each signer needs to perceive all the signers (for example, service nodes in the blockchain network) participating in the aggregate signature before signing the messag...

AI Technical Summary

Problems solved by technology

[0003] It should be understood that if all signers participating in the aggregate signature include service node 1, service node 2 and service node 3 in the blockchain network, then for any signer (for example, service node 1), after receiving the When signing a message, it is necessary to obtain the interaction data of all signers (for example, the key parameter R generated by the business node 1 itself 1 , the key parameter R sent by service node 2 2 and the key parameter R sent by service node 3 3 ), and then can sign the message to be signed to obtain the data signature information, which means that each signer has more network interactions in the process of signing the message to be signed, so that the existing aggregated signature scheme has a high The complexity of the network, resulting in more bandwidth usage, which reduces the signature efficiency of aggregate signatures

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