Key exchange method and apparatus
US9924354B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2015 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Dec 14, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention disclose a key exchange method and apparatus, which relate to the communications field, and can enable user equipments establishing a D2D link to share a set of keys, and further, information security can be achieved when a user equipment transmits service data or a signaling message through a Ud interface. A specific solution is that: a network device acquires a first key, and sends a message including the first key to a second user equipment, so that the second user equipment uses, when communicating with a first user equipment by using a D2D link, the first key to protect transmitted information. The present invention is applicable to an exchange process of keys for protecting data on a D2D link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.