Method and algorithm for accessing a smart card stored in a...

Details Method and algorithm for accessing a smart card stored in a... Method and algorithm for accessing a smart card stored in a...

2006-11-21

2006-11-21

Le, Uyen-Chau N. (Department: 2876)

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Conductive

Reexamination Certificate

active

07137565

ABSTRACT:
A method for accessing a smart card (SIM) from a host device (TE) via a telecommunications card (MT), the telecommunications card (MT) comprising a command interpreter (TA) for interpreting host device commands and a modem (ME) with associated smart card reader, the modem (ME) being only accessible to the host device via the command interpreter (TA), the method comprising the steps of: (a) providing an access command (AT+CSIM) on the host device, instructing the command interpreter (TA) to pass on any attached command originating from the host device (TE) to the smart card reader; (b) attaching an application command (APDU) to the access command (AT+CSIM) and forwarding both to the command interpreter (TA); (c) performing the application command (APDU) on the smart card reader; (d) storing a response given by the smart card (SIM) in a first buffer which is accessible towards the host device (TE).

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