Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Thermally conductive and electrically insulative card guide
Technique for enabling a plurality of software components to communicate in a software component matrix environment
Luggage interior
Electric toothbrush
Audio processing device and method for reducing echo from a second signal in a first signal
Data recording device, data recording method to be used in same, and data record controlling computer program
Holographic direct view display having an apodization device
  Randomly Featured Patents
Electrical submersible pump
Nucleic acids corresponding to TANGO 294 a gene encoding a lipase--like protein
Removing oxygen from a solvent extractant in an uranium recovery process
Inner stator of direct driving drum type motor
Gasoline pump handle clip
Direct link relay in a wireless network
Prodrugs of 6-mercaptopurine and 6-mercaptopurine ribosides and therapeutic compositions and methods employing them
Videocassette tray
Method for making superconductor films from organometallic precursors
Device for discharging flowable materials and method of using same