Tamper resistant device and file generation method
US7500605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | May 16, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/42
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
It is an object to provide a tamper resistant device and a file generation method which can store right value information such as a ticket information, and guarantee validity of the right value information without executing a digital signature processing.An IC card 102 attached to a portable terminal 100 receives, from an application 101, right value information representing a right value and a file generation message instructing generation of a rights-file. The right value information includes file data representing the right value, data size and the like. Upon determining that a file generation message is received, the IC card 102 generates a rights-file including the IC card identification ID and right value information which are previously stored in the IC card 102.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.