Time recovery from attacks on delayed authentication
US12395487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Mar 13, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0876
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques to perform time recovery from attacks on delayed authentication in a time synchronized network are described. One embodiment comprises a method for decoding time information and a message authentication code (MAC) from a time message, the time information to synchronize a local clock for a device to a network time of a time synchronized network (TSN), and the MAC to authenticate the time message, determining whether the time message is authentic using the MAC, discarding the time information when the time message is not authentic, performing a bounded search to identify authentic time information using the MAC, and passing the authentic time information to a clock manager to synchronize the local clock to the network time of the TSN when the authentic time information is identified. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.