Time synchronization solutions for forward-secure one-time authentication tokens
US9654467B1 · kind B1 · utility
7Cited by
12References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Mar 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3234
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for improving resilience to forward clock attacks. A token generates a passcode from a user authentication token for presentation to an authentication server by detecting a forward clock attack; and communicating an indication of the forward clock attack to the authentication server. The generation of the user authentication passcodes is optionally suspended upon detecting the forward clock attack. The detection may be based on a comparison of a current device time of the token and a last used device time during a generation of a user authentication passcode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.