Patent ID: 11934549
Assignee: ADVANCED NEW TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A non-transitory computer-readable storage medium storing computer-executable instructions, which when executed by a processor, configure the processor to implement acts including:
receiving a request for storing a target invoice through a blockchain;
determining an invoice issuer and an invoice receiver of the target invoice in response to the request;
generating first ciphertext data by encrypting plaintext data of the target invoice based on a first key corresponding to the invoice issuer;
generating second ciphertext data by encrypting the plaintext data of the target invoice based on a second key corresponding to the invoice receiver;
adding the first ciphertext data and a user identifier of the invoice issuer to the blockchain as related to one another; and
adding the second ciphertext data and a user identifier of the invoice receiver to the blockchain as related to one another.