Patent ID: 7373518
Filing Date: 2008-05-13
Classification: G06K,G06Q,G07F

Abstract:
1. A method of operation for a card reader comprising: providing a controller having a control interface connected thereto for controlling the card reader; a card interface for chip cards which can be interchanged under operational conditions, the card interface being connected to the controller; a superordinate controller; and a security module having a module interface which is connected to the controller; generating an authorization request comprising instruction sequences at the superordinate controller; transmitting the authorization request and an encrypted password to the control interface; forwarding the authorization request to the security module; producing a decrypted password; generating an order at the superordinate controller for forwarding the decrypted password from the security module to the card interface; sending the order to the security module via the control interface; forwarding the decrypted password to the card interface; comparing, at the chip card, the decrypted password with a password stored on the chip card; and producing a statement indicating whether there is a match between the decrypted password and the password stored on the chip card.