Cryptographic device with administrative access interface utilizing event-based one-time passcodes
US10951412B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jan 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3234
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cryptographic device comprises a processor coupled to a memory and is configured to maintain an event counter characterizing a number of successful administrative accesses to the cryptographic device. The cryptographic device is further configured to receive an event-based one-time passcode for a given administrative access attempt, to compare the received event-based one-time passcode to an expected event-based one-time passcode determined as a function of a current value of the event counter, and to grant or deny the given administrative access attempt based at least in part on a result of the comparing. The cryptographic device may store an administrative seed value, with the expected event-based one-time passcode being determined as a function of the administrative seed value and the current value of the event counter. The cryptographic device illustratively comprises a smartcard, a hardware or software authentication token, an Internet-of-Things (IoT) device, or other type of processor-based device having an administrative access interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.