Error code in SCardTransmit

Question

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Hi,
I m using SCardTransmit function but its returning error code -2146435068
code is:

CSS

typedef long (__stdcall *Transmit)(SCARDHANDLE ,LPCSCARD_IO_REQUEST,BYTE,DWORD ,LPSCARD_IO_REQUEST,BYTE,LPDWORD ); BYTE sendCommand[]={0x00,0xA4,0x00,0x00,0x02,0x3F,0x00}; BYTE recvCommand[256]; long result,sendlen=sizeof(sendCommand); DWORD recvlen; SCARD_IO_REQUEST pioSendPci; pioSendPci.dwProtocol=SCARD_PROTOCOL_T0; pioSendPci.cbPciLength= sizeof(pioSendPci); result= com(phCard,&pioSendPci,sendCommand[0],sendlen,NULL,recvCommand[0], &recvlen); if(result!=SCARD_S_SUCCESS){ printf("command not transmitted\n"); }

Here the com function is acting as SCardTransmit function.provide some link for these kind of errors because wherever i see errors are in form of Hexadecimal. Nobody provides error in this form.

Posted 25-May-12 1:51am

Anil Kumar 23

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Comments

Carlos Gama 28-Oct-14 10:55am

The value 0xA4 isn't correct. you need calculate values upper to 7F (127) to negative,

like C0 => 192 + 0 = 192

so:
192 -128 = -64

then
C0 = -64

2 solutions

Solution 2

Thats work:

C++

HRESULT gsCard::pfApduSend(char * ARef, const char * AStr)
{
  // * Apdu Cmd to send
  char * lCmd = (char*)new char[255];
  // *  
  lCmd = gsApdu::gfApduCmd(strlen(AStr), AStr);
  // * get "00 C0 00 00 12" pass to (0)(-64)(0)(0)(18)  // * <------ pay attention
  // *
  // * Apdu Cmd Size
  unsigned long lLen = sizeof(lCmd) +1;                 // * <------ pay attention
  // *
  // * pointer to IO request
  SCARD_IO_REQUEST lPio;
  lPio.dwProtocol = 0;
  lPio.cbPciLength= sizeof(lPio);
  // *
  // * buffer & size to return by Api
  LPBYTE lBuf;                                          // * <------ pay attention
  unsigned long lSze = 255;
  // *
  // * Ask Apdu to Scard
  lRet = SCardTransmit(sCardHandle, &lPio, lCmd, lLen, NULL, (LPBYTE)&lBuf, &lSze);
   
  if (lRet == SCARD_S_SUCCESS) {
    gsChar::gfCharToAscHex(*ARef, (unsigned char*)(LPBYTE)&lBuf, lSze);
    // * get "o\x14‚\x01\x14ƒ\x02 \x10†\x04‡ÿÿ"        // * <------ pay attention
    // * pass to 
    // * "6F 14 82 01 14 83 02 20 10 86 04 87 FF FF 00 85 01 00 61 04"  
  }
}

Posted 28-Oct-14 4:49am

Carlos Gama

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Code-o-mat · Accepted Answer · 2012-05-25T03:29:00

Solution 1

Convert -2146435068 into an unsigned value (e.g. unsigned int), this gives you 2148532228. Convert this to hexadecimal and you get: 0x80100004. After a little bit of googling for 80100004 and SCardTransmit it turns out this means: SCARD_E_INVALID_PARAMETER. So there you have it.

Posted 25-May-12 3:29am

Code-o-mat