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
Hydroxybutyrate ester and medical use thereof
Terminal structure, electronic device, and manufacturing method thereof
Method for preparing ginkgo extracts having a low content of 4'-O-methyl pyridoxine and/or biflavones
Modeling of applications and business process services through auto discovery analysis
Method and apparatus for inserting a filled prosthetic bladder into a patient
Methods and apparatus for using self-contained transaction components to facilitate online transactions
Light sensing circuit, backlight control apparatus having the same, and liquid crystal display device having the same
  Randomly Featured Patents
Carrier for electrophotography and developer for electrophotography using the carrier
Gapped flexure tongue for floating type magnetic head apparatus
Anti-coagulating and filtering blood
Multi link type self healing system for communication networks
Disc unit including automatic ejection upon misinsertion detection
Method of transferring data in a processing system
Two compartment carryout carton
Hydraulic vehicle brake system
Film initial-advance apparatus for camera
Storage rack for temporary irrigation system