我正在尝试阅读爱沙尼亚身份证的个人文件。
我需要将以下数据发送到卡(从
here ) 以从个人文件中读取记录(即 ID 号、姓名等):
00 A4 00 0C # We choose root folder
00 A4 01 0C 02 EE EE # We choose folder EEEE
00 A4 02 04 02 50 44 # We choose file 5044, which contains personal data
00 B2 XX 04 # We read record XX (see table) from the personal data file
# The card responds 61 YY, where YY denotes the number of bytes waiting to be read
00 C0 00 00 YY # We read YY bytes from the card
# Card responds ... 90 00, where ... is the requested data and 90 00 means status OK
但是,原始字节在 T=0 协议(protocol)中,并且卡在接受 T=0 之前卡在 T=1 的时间过长。事件顺序如下:
SCardStatusChange
返回并开始处理卡片SCardConnect
或 SCardReconnect
)时出现错误 SCARD_E_SHARING_VIOLATION
一遍又一遍地收到,大约 5 秒 SCARD_E_PROTO_MISMATCH
接收时间在 3 到 30 秒之间,甚至更多。 我可以在 T=0 协议(protocol)中以某种方式更快地连接到它吗?
我的源代码的简化版本如下:
// NOTE: this is approximately what I do.
// I haven't tested this code yet - it's almost 1 AM here.
#include <winscard.h>
void readSmartCard() {
LONG sCardErrorCode;
SCARDCONTEXT sCardContext;
DWORD sCardReaderStrLen = 1024;
wchar_t sCardReaderStr[1024];
SCARDHANDLE sCardHandle;
DWORD sCardActiveProtocol;
SCARD_READERSTATE readerState;
sCardErrorCode = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &sCardContext);
// error handling macro
ZeroMemory(&sCardReaderState, sizeof(sCardReaderState));
sCardReaderState.szReader = L"\\\\?PnP?\\Notification";
sCardReaderState.pvUserData = nullptr;
sCardReaderState.dwEventState = SCARD_STATE_PRESENT;
sCardErrorCode = SCardGetStatusChange(sCardContext, INFINITE, &readerState, 1);
// e.h.m
if (readerState.dwCurrentState == 65538) {
sCardErrorCode = SCardListReaders(sCardContext, NULL, sCardReaderStr, &sCardReaderStrLen);
// e.h.m
readerState.szReader = sCardReaderStr;
}
sCardErrorCode = SCardGetStatusChange(sCardContext, INFINITE, &readerState, 1);
// e.h.m
if (sCardReaderState.dwEventState & SCARD_STATE_PRESENT) {
while (true) {
sCardErrorCode = SCardConnect(sCardContext, readerState.szReader, SCARD_SHARE_EXCLUSIVE,
SCARD_PROTOCOL_T0, &sCardHandle, &sCardActiveProtocol);
// e.h.m
printf("%x", sCardErrorCode);
// this will print:
// 8010000b (for around 5s)
// 8010000f (for around 20s)
if (sCardErrorCode == SCARD_S_SUCCESS) {
break;
}
Sleep(1000);
}
// open personal file and read data, yay!
}
}
最佳答案
在互联网上搜索了很长时间后,我发现不需要更改命令。
我只需要在传输的读取/打开命令的末尾添加一个额外的零字节,并接收数据作为读取命令的响应,而不是使用单独的命令来接收字节。 (T=0 使用“请求数据/读取数据”模型,而 T=1 似乎只是响应数据)
我还需要更改所有提及 SCARD_PCI_T0
有条件地使用 SCARD_PCI_T1
并制作 SCardConnect()
功能也接受 T1。
我稍后会在这里发布一个不错的代码示例。
关于c++ - 连接到爱沙尼亚身份证时的 WinSCard SCARD_E_PROTO_MISMATCH,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39758253/