The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2025
Filed:
Jan. 13, 2022
Alipay (Hangzhou) Information Technology Co., Ltd., Hangzhou, CN;
Ant Blockchain Technology (Shanghai) Co., Ltd., Shanghai, CN;
Alipay (Hangzhou) Information Technology Co., Ltd., Hangzhou, CN;
Ant Blockchain Technology (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A method and an apparatus for implementing secure multicast in a blockchain network. The method includes: a first blockchain node generates and sends a security group creation message including a security group information structure corresponding to each target blockchain node to be added to a multicast security group, each security group information structure including a public key of a corresponding target blockchain node and ciphertext security group information obtained by encrypting plaintext security group information by using the public key, the plaintext security group information including a security group session key; and a second blockchain node searches, after receiving the security group creation message, the security group creation message for a security group information structure that includes a public key of the second blockchain node, and decrypts ciphertext security group information in the identified security group information structure to obtain the security group session key.