Back to results
US 4,827,113 AGranted
Technique for authenticating IC card and terminal
AssigneeCasio Computer Co., Ltd.
InventorKenji Rikuna
Life of this patent
Estimating the term…
Abstract
An IC card is placed on a card terminal main body, and an internal IC of the IC card is electrically connected to an electrical circuit in a terminal through a connector. Input data entered by a card holder at a keyboard and data read out from the IC card are encrypted in accordance with a predetermined encryption algorithm and are compared with each other. Authenticity of the card terminal and the IC card is determined in accordance with the comparison result.
Claims15
An IC card terminal comprising:
- a top plate;
- an IC card holder arranged on said top plate;
- connecting means for electrically connecting a connector unit of an IC card received in said IC card holder;
- means for entering personal identification number data into said IC card;
- means for receiving confirmation data from the IC card indicative of a result of authentication of the personal identification number;
- means for inputting, after receipt of said confirmation data indicative of a confirmed authentication, information data relating to a transaction;
- means for processing said information data;
- emboss imprinting means having a carriage provided with a pressure roller mounted to roll along said top plate for transferring an embossed pattern formed on a surface of said IC card onto a transaction sheet;
- housing means for housing therein said IC card holder, connecting means, entering means, receiving means, inputting means, and processing means;
- and
- actuating means for alternately setting said connecting means into one of a first and second states in accordance with a position of said carriage, said first state being one in which the connecting means is in electrical communication with the connector unit of said IC card, and said second state being one
8 more elements
An IC card terminal system comprising:
- an IC card incorporating an IC chip therein, said IC chip including memory means for storing card authentication (CA) data and a first personal identification number (PIN) data, and means for comparing second PIN data supplied from a terminal and said first PIN data stored in said memory means;
- said IC card terminal having:
- (a) means for inputting said second PIN data;
- (b) means for storing CA data read out from said IC card when said first and second PIN data coincide with each other;
- (c) means for entering total amount of money data;
- (d) time measuring means;
- (e) means for calculating sales approval number (SAN) data using the CA data, total amount of money data and the date data obtained from the time measuring means;
- (f) means for printing the SAN data on a transaction sheet;
- and
- a host computer for checking whether the SAN data printed by said IC card terminal is valid.
7 more elements
A system having an IC card and a terminal, comprising:
- an IC card having means for comparing input personal identification number (PIN) data with preset PIN data;
- and means for decrypting data encrypted by the terminal;
- and a terminal having
- (a) means for inputting PIN data of an IC card holder;
- (b) means for generating a random number;
- (c) means for encrypting the random number data generated by said random number generating means;
- (d) means for supplying encrypted data to an IC card;
- and
- (e) means for comparing said random number data with corresponding decrypted data received from said IC card.
6 more elements
Dependencies are inferred from the claim text.