Encrypted nonces as rotated device addresses
US12250538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Nov 27, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Rotation of a wireless client device address is based on an encryption key and a nonce value. Key information and nonce value information are shared between a wireless client device and a network infrastructure component over a secure communication channel. The wireless client device encrypts the nonce value using the key information and encodes the encrypted value as a device address. The wireless client device then identifies itself via a source address value in a message transmitted over a wireless network. Upon receiving the message, the network infrastructure component decrypts information derived from the source address value and compares the resulting data to the nonce value. If a match is identified, the network infrastructure identifies the wireless client device as a source of the message. In some embodiments, the nonce value is updated with each rotation to provide for improved entropy of generated device addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.