我试图发送一个APDU,其中包含一些命令数据,然后期望从卡中的一些数据响应。我使用this example code by Ludovic Rousseau作为开始点(修改后的代码)。我送使用相同的发送和接收数据T = 1 APDU
的APDU如下:
0x80 0x02 0x00 0x00 0x08 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x08
即我选择了CLA 0x80
,INS 0x02
,未使用P1和P2,Lc和Le均为0x08
。
我回来的数据缓冲区只包含0x90 0x00
。
我已经检查了哪个协议得到了协商 - 即T = 1,如预期。如果它是T = 0,我期望得到一个61XX
-系列答案(见this related question)。
其他每种APDU格式都可以正常工作(即空,只发送或只接收数据)。我在这里忽略了什么吗?
// source: https://ludovicrousseau.blogspot.nl/2010/04/pcsc-sample-in-c.html
// This is based on code by Ludovic Rousseau, modified to match our example
#ifdef WIN32
#undef UNICODE
#endif
#include <stdio.h>
#include <stdlib.h>
#ifdef __APPLE__
#include <PCSC/winscard.h>
#include <PCSC/wintypes.h>
#else
#include <winscard.h>
#endif
#ifdef WIN32
static char *pcsc_stringify_error(LONG rv)
{
static char out[20];
sprintf_s(out, sizeof(out), "0x%08X", rv);
return out;
}
#endif
#define CHECK(f, rv) \
if (SCARD_S_SUCCESS != rv) \
{ \
printf(f ": %s\n", pcsc_stringify_error(rv)); \
return -1; \
}
int main(void)
{
LONG rv;
SCARDCONTEXT hContext;
LPTSTR mszReaders;
SCARDHANDLE hCard;
DWORD dwReaders, dwActiveProtocol, dwRecvLength;
SCARD_IO_REQUEST pioSendPci;
BYTE pbRecvBuffer[258];
BYTE selectapdu[] = { 0x00, 0xA4, 0x04, 0x00, 0x0A,
0x01, 0x02, 0x03, 0x04, 0x05,
0x48, 0x45, 0x4C, 0x4C, 0x4F };
BYTE echoapdu[] = { 0x80, 0x02, 0x00, 0x00, 0x08,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x08 };
unsigned int i;
rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
CHECK("SCardEstablishContext", rv)
#ifdef SCARD_AUTOALLOCATE
dwReaders = SCARD_AUTOALLOCATE;
rv = SCardListReaders(hContext, NULL, (LPTSTR)&mszReaders, &dwReaders);
CHECK("SCardListReaders", rv)
#else
rv = SCardListReaders(hContext, NULL, NULL, &dwReaders);
CHECK("SCardListReaders", rv)
mszReaders = calloc(dwReaders, sizeof(char));
rv = SCardListReaders(hContext, NULL, mszReaders, &dwReaders);
CHECK("SCardListReaders", rv)
#endif
printf("reader name: %s\n", mszReaders);
rv = SCardConnect(hContext, mszReaders, SCARD_SHARE_SHARED,
SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &hCard, &dwActiveProtocol);
CHECK("SCardConnect", rv)
switch(dwActiveProtocol)
{
case SCARD_PROTOCOL_T0:
printf("T0\n");
pioSendPci = *SCARD_PCI_T0;
break;
case SCARD_PROTOCOL_T1:
printf("T1\n");
pioSendPci = *SCARD_PCI_T1;
break;
}
// selecting the application
dwRecvLength = sizeof(pbRecvBuffer);
rv = SCardTransmit(hCard, &pioSendPci, selectapdu, sizeof(selectapdu),
NULL, pbRecvBuffer, &dwRecvLength);
CHECK("SCardTransmit", rv)
printf("response (%d): ", dwRecvLength);
for(i=0; i<dwRecvLength; i++)
printf("%02X ", pbRecvBuffer[i]);
printf("\n");
// sending a non-empty APDU that expects a reply
dwRecvLength = sizeof(pbRecvBuffer);
printf("sent (%d): ", sizeof(echoapdu));
for(i=0; i<sizeof(echoapdu); i++)
printf("%02X ", echoapdu[i]);
printf("\n");
rv = SCardTransmit(hCard, &pioSendPci, echoapdu, sizeof(echoapdu),
NULL, pbRecvBuffer, &dwRecvLength);
CHECK("SCardTransmit", rv)
printf("response (%d): ", dwRecvLength);
for(i=0; i<dwRecvLength; i++)
printf("%02X ", pbRecvBuffer[i]);
printf("\n");
// disconnecting
rv = SCardDisconnect(hCard, SCARD_LEAVE_CARD);
CHECK("SCardDisconnect", rv)
#ifdef SCARD_AUTOALLOCATE
rv = SCardFreeMemory(hContext, mszReaders);
CHECK("SCardFreeMemory", rv)
#else
free(mszReaders);
#endif
rv = SCardReleaseContext(hContext);
CHECK("SCardReleaseContext", rv)
return 0;
}
这给作为输出:
reader name: OMNIKEY AG CardMan 3121 00 00
T1
response (2): 90 00
sent (14): 80 02 00 00 08 01 02 03 04 05 06 07 08 08
response (2): 90 00
当我尝试使用pyscard
做在Python同样的事情,一切正常,即调用data, sw1, sw2 = connection.transmit(...)
具有相同APDU字节输入使得data
包含预期的数据。
这使我相信卡上的相关代码是好的(但为了完整性也在下面发布)。
private void getEcho(APDU apdu) {
byte[] buffer = apdu.getBuffer();
short numBytes = (short) (buffer[ISO7816.OFFSET_LC] & 0x00FF);
short bytesRead = apdu.setIncomingAndReceive();
short pos = 0;
while (pos < numBytes) {
Util.arrayCopyNonAtomic(buffer, ISO7816.OFFSET_CDATA, transientMemory, pos, bytesRead);
pos += bytesRead;
bytesRead = apdu.receiveBytes(ISO7816.OFFSET_CDATA);
}
apdu.setOutgoing();
apdu.setOutgoingLength(numBytes);
apdu.sendBytesLong(transientMemory, (short)0, bytesRead);
}
你是正确的,它应该已经'numBytes'(我已经相应改变的话),但不具有任何实际这种情况下的世界影响,因为看起来我的测试足够小以适应单个APDU缓冲区。 – Joost
这让我看到了这一行,然后我改变了一下代码,使用'sendBytes'而不是'sendBytesLong'。这_does_产生预期的结果..但显然只适用于适合实现的APDU缓冲区的小数据序列。任何想法在这里有什么不同之处?这能解释为什么'pyscard'确实有效吗? – Joost
哎呀,看起来我搞砸了我的测试,你的修复确实是唯一需要改变的东西。现在我已经恢复到与修复相结合的问题中发布的状态,它按预期工作。谢谢! – Joost