Authentication vector generation device, subscriber identity module, mobile communication system, authentication vector generation method, calculation method, and subscriber authentication method
US8141137B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2005 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jun 18, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/45
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Authentication of a subscriber identity module issued by IMT-2000 network operator is performed with no decrease in the confidentiality of calculation processing, even in cases such as when a roaming network is a GSM network. An HLR of an IMT-2000 mobile communication network comprises an algorithm information attachment unit for attaching, to a RAND field of an authentication vector used to authenticate a USIM, information specifying an algorithm to be used in the authentication calculation. The USIM, which is mounted on a mobile equipment, comprises an algorithm storage unit storing in advance a plurality of algorithms for use in the authentication calculation, a specification unit for specifying the algorithm to be used in the calculation from among the plurality of algorithms stored in the algorithm storage unit by referring to the algorithm-specifying information included in received data, and a calculation unit for performing the calculation on the basis of the specified algorithm using the received data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.