Patent ID: 11943373
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A method for issuing an identity certificate to a blockchain node in a blockchain network, the blockchain node in the blockchain network comprising:
a first terminal;
a second terminal;
a third terminal; and
a certificate authority system comprising a first-tier certificate authority node, a second-tier certificate authority node, and a third-tier certificate authority node;
wherein the method, performed by the certificate authority system, comprises:
issuing a first identity certificate to the first terminal through the first-tier certificate authority node;
receiving a second identity certificate issuance request that is from the first terminal and that is made by using the first identity certificate, wherein the second identity certificate issuance request is generated in response to a registration request transmitted by the second terminal to the first terminal;
issuing a second identity certificate to the first terminal through the second-tier certificate authority node, wherein the first terminal forwards the second identity certificate to the second terminal;
receiving a third identity certificate issuance request that is from the second terminal and that is made by using the second identity certificate, the third identity certificate issuance request being generated in response to a registration request transmitted by the third terminal to the second terminal having the second identity certificate; and
issuing a third identity certificate to the second terminal through the third-tier certificate authority node, wherein the second terminal forwards the third identity certificate to the third terminal.