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
Sample analyzing device
Method for improving the performance of browser-based, formula-driven parametric objects
Information processing apparatus and method
Semiconductor memory device, method of controlling read preamble signal thereof, and data transmission method
End-of-session authentication
Method for repairing or replacing damaged tissue
Salts and polymorphs of desazadesferrithiocin polyether analogues as metal chelation agents
  Randomly Featured Patents
Cutting head assembly for a rotary motor
Implant damaged oxide insulating region in vertical cavity surface emitting laser
Beverage can resealing device
Cushioned seat protector
Golf putter head
Human powered vehicle and propelling mechanism thereof
Method for generating and evaluating a table model for circuit simulation
Limited use PIN system and method
Method for forming a capping layer over a low-k dielectric with improved adhesion and reduced dielectric constant
Hide away bed rail