Patent ID: 11924358
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The method according to claim 5, wherein a blockchain comprises a plurality of sub-blockchains, the registration information comprises the type of the node, and the generating a public key and a private key of the node for the node comprises:
generating, for the node, public keys and private keys of the node that are on different sub-blockchains;
in accordance with a determination that the digital certificate issuing center further comprises the authentication policy module, after the authenticating the registration information by using the authentication module, the method further comprises:
generating, in accordance with a determination that the authentication succeeds, sub-blockchain permission information specific to the type of the node based on the type of the node by using the authentication module, and storing the sub-blockchain permission information in the authentication policy module, the sub-blockchain permission information comprising sub-blockchains that allow query for different service types;
the private key query request comprises the type of the node and a service type, the digital certificate query request comprises the type of the node and the service type, the authentication module queries the sub-blockchain permission information specific to the type of the node from the authentication policy module, determines, according to the sub-blockchain permission information and the service type, a sub-blockchain that allows query, puts the sub-blockchain that allows query into the response that indicates that authentication on a digital certificate succeeds, and transmits the response to the private key management module; and
the transmitting the private key of the node to the node comprises:
transmitting, to the node, a private key, on the sub-blockchain that allows query of the node.