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
Cooking brush
Temporal document trainer and method
Method and apparatus for predicting object properties and events using similarity-based information retrieval and modeling
Position pointer, variable capacitor and inputting apparatus
Build process management system
Organic semiconductor compound, semiconductor device, solar cell and producing method of organic semiconductor compound
Voltage level shift circuits and methods
  Randomly Featured Patents
Integrated high voltage capacitor having capacitance uniformity structures and a method of manufacture therefor
P-glycoprotein mutant resistant to cyclosporin modulation
Infant nursing device
Exploiting service heartbeats to monitor file share
Cordless telephone apparatus having a low power stand-by mode and a hold mode
Pet chew
Dracaena plant named `0102RB`
Branched ester composition
Connector with filter function
Enforcing universal access control in an information management system