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
Non-aqueous electrolyte battery
Heating pad
Software self-checking systems and methods
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Optical power measurement method, optical line terminal and optical network unit
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
High-order harmonic device of cavity filter
  Randomly Featured Patents
Holder (with sleeve) for interproximal brushes
Message context based TCP transmission
Semiconductor device and a method of manufacturing the same
Low noise amplifier (LNA) gain switch circuit
Cationic catalysts and process for using said catalysts
Acidic monoazo dyestuffs
Tapered slot antenna
Process and intermediates for a .beta..sub.3 -adrenergic receptor agonist
Heterocyclic compounds
Offline voicemail