AN2646 datasheet(34/43 Pages) STMICROELECTRONICS

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Smartcard interface library: description

AN2646 - Application note

34/43

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FileParameters: It contains the 16 bytes file parameters (File ID, FILE Access

Conditions...).

●

SCState: It stores the current smartcard state.

●

SC_Response->SW1 and SC_Response->SW2: they return the smartcard response

to the SC_CREATE_FILE command.

6.3.6

SC_UPDATE_BINARY

SC_ADPU.Header.CLA = SC_CLA;

SC_ADPU.Header.INS = SC_UPDATE_BINARY;

SC_ADPU.Header.P1 = OFFSET_MSB;

SC_ADPU.Header.P2 = OFFSET_LSB;

SC_ADPU.Body.LC = LENGTH;

while(i < LCmax)

{

SC_ADPU.Body.Data[i++] = 0;

}

SC_ADPU.Body.LE = 0x00;

SC_Handler(&SCState, &SC_ADPU, &SC_Responce);

●

SCState: It stores the current smartcard state.

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OFFSET_MSB: Most significant byte of offset for reading data.

●

OFFSET_LSB: Least significant byte of offset for reading data.

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LENGTH: It contains the size (in byte) of the area to write (valid only for the elementary

file).

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SC_Responce->Data: It contains the smartcard data to write.

●

SC_Responce->SW1 and SC_Responce->SW2: they return the smartcard response

to the SC_UPDATE_BINARY command.

6.3.7

SC_VERIFY

SC_ADPU.Header.CLA = SC_CLA;

SC_ADPU.Header.INS = SC_VERIFY;

SC_ADPU.Header.P1 = 0x00;

SC_ADPU.Header.P2 = 0x00;

SC_ADPU.Body.LC = 0x08;

for(i = 0; i < SC_ADPU.Body.LC; i++)

{

SC_ADPU.Body.Data[i] = CHV1[i];

}

while(i < LCmax)

{

SC_ADPU.Body.Data[i++] = 0;

}

SC_ADPU.Body.LE = 0;

SC_Handler(&SCState, &SC_ADPU, &SC_Responce);

●

CHV1: It contains the 8-byte CHV1 code.

●

SCState: It stores the current smartcard state.

●

SC_Responce->SW1 and SC_Responce->SW2: they return the smartcard response

to the SC_VERIFY command.

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