Rolling key resynchronization in cellular verification and validation system
US5241598A · kind A · utility
191Cited by
17References
70Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | May 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0015
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for the resynchronization of a rolling key used as an input among a plurality of inputs to an authentication algorithm executed in a mobile station and in a radio network providing service to the mobile station. In one aspect of the system, the network rolling key input is set to a selected value and the mobile station is commanded to set the mobile station rolling key input to the same selected value. The mobile station will then set the mobile station rolling key input to the selected value in response to the command from the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.