Method and algorithm for accessing a smart card stored in a telecommunications card from a host device to which said telecommunications is connected
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United States of America Patent
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Nov 21, 2006
Issued Date -
N/A
app pub date -
Oct 12, 2004
filing date -
Oct 10, 2003
priority date (Note) -
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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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