Device in multicast group
US11336630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Oct 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device in a multicast group includes an encryptor/decryptor, a key storage, a security interface and a data processing requestor. The security interface performs receiving and storing a group key and a publisher key from and in the key storage when the device is registered as a publisher, and receiving and storing the group key from and in the key issuing when the device is registered as a subscriber; receiving a request for encrypting first data from the data processing requestor; determining whether the device is an authorized publisher; and transmitting the first data and the read group key to the encryptor/decryptor when the result of the determining indicates the device is the authorized publisher; receiving a first encrypted data generated by encrypting the first data using the group key; and transmitting the first encrypted data to the data processing requestor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.