Authentication methods and apparatus utilizing hash chains
US7848746B2 · kind B2 · utility
245Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Aug 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first processing device, which may be, for example, a wireless authentication token or an RFID tag, comprises a memory, a processor coupled to the memory, and interface circuitry coupled to the processor. The processor is operative to control the output of authentication information via the interface circuitry, where the authentication information comprises a sequence of values corresponding to images of a hash chain. A given one of the values of the sequence is utilized by a second processing device to generate a modified value suitable for providing joint authentication of the first and second processing devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.