NFC anti-relay protection
US12389227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2022 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Sep 10, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00555
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and methods for detecting and preventing a relay attack in a channel on which a near field communication (NFC) action between a key holder device and a reader is attempted are disclosed. A time limit is established for polling communications between the key holder device and the reader. Each of the reader and the key holder device generates a reader random value and a device random value respectively. The reader sends to the key holder device the reader random value, which includes the time limit for a response from the key holder device, the response including the device random value and the reader random value. The reader receives the response from the key holder device and can then determine whether the response from the key holder device is received within the time limit, to detect whether a relay attack can be made on the channel for the NFC action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.