Resources Contact Us Home
Method for issuing IC card storing encryption key information

Image Number 5 for United States Patent #8099771.

It is possible to issue an IC card storing unique encryption key information in such a manner that re-issuing is enabled and sufficient security can be assured. An IC card provider X delivers an IC card having a group code G(A) to a company A and an IC card having a group code G(B) to a company B. When a company staff .alpha. inputs a unique personal code P(.alpha.) and performs initialization, in the IC card, calculation is performed according to a predetermined algorithm using the P(.alpha.) and G(A). Data uniquely determined by the calculation is stored as encryption key information K(.alpha.) in the IC card. Even if the company staff .alpha. loses the IC card, it is possible to obtain the IC card having the same encryption key information K(.alpha.) as before by performing initialization again by using the IC card delivered by the IC card provider X.

  Recently Added Patents
Method and assembly for determining the temperature of a test sensor
Light emitting diode package and method of fabricating the same
Processing financial documents
3D image generating method, 3D animation generating method, and both 3D image generating module and 3D animation generating module thereof
Measuring current and resistance using combined diodes/resistor structure to monitor integrated circuit manufacturing process variations
Connector interface for a cable
Passive charge cord release system for an electric vehicle
  Randomly Featured Patents
Information cross referencing system
Semiconductor device having ferroelectic memory cells and method of manufacturing the same
Height indicator for an articulating support arm
Multicomputer memory access architecture
Digital media transaction kiosk and method
Multi-function key assembly for an electronic device
Solid oxide fuel cell (SOFC) device having gradient interconnect
Wireless ECG system
Gauge for preparation of drawings with virtual deepness effect achievement and method for using thereof