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
Node and wireless sensor network comprising the node
Advertisement in operating system
Field device configuration system
Method and apparatus for interactive distribution of digital content
Methods and apparatus to identify exposure to 3D media presentations
System, method and computer program product for efficient caching of hierarchical items
Lens barrel and imaging device
  Randomly Featured Patents
Method and apparatus for applying vascular grafts
Variable contour seating device
Output buffer circuit having changeable output impedance
Printhead end of life detection system
Apparatus with functional element for performing function upon intervertebral discs
Method and apparatus measuring electrical anisotropy in formations surrounding a wellbore
Locking device for exhaust filter cover of vacuum cleaner
Bisdithiophosphoric acid derivatives as lubricant additives
Method for preparing high resolution polyimide images using non-photosensitive layers of poly(amic acid) or salts thereof
Liquid crystal projector