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Membuat aplikasi klien

Topik berikut membahas cara menggunakan Windows Biometric Framework API untuk membuat aplikasi klien yang menggunakan kumpulan sensor privat.

Mendaftarkan informasi biometrik

Contoh kode berikut menunjukkan cara mendaftarkan templat biometrik di kumpulan sistem.

Pendaftaran sinkron

Contoh kode berikut:

Untuk mengkompilasi sampel ini, tautkan ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT EnrollSysPool(
                      BOOL discardEnrollment, 
                      WINBIO_BIOMETRIC_SUBTYPE subFactor)
{
    HRESULT hr = S_OK;
    WINBIO_IDENTITY identity = {0};
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;
    WINBIO_REJECT_DETAIL rejectDetail = 0;
    BOOLEAN isNewTemplate = TRUE;

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioOpenSession failed. ");
        wprintf_s(L"hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Locate a sensor.
    wprintf_s(L"\n Swipe your finger on the sensor...\n");
    hr = WinBioLocateSensor( sessionHandle, &unitId);
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioLocateSensor failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Begin the enrollment sequence. 
    wprintf_s(L"\n Starting enrollment sequence...\n");
    hr = WinBioEnrollBegin(
            sessionHandle,      // Handle to open biometric session
            subFactor,          // Finger to create template for
            unitId              // Biometric unit ID
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioEnrollBegin failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Capture enrollment information by swiping the sensor with
    // the finger identified by the subFactor argument in the 
    // WinBioEnrollBegin function.
    for (int swipeCount = 1;; ++swipeCount)
    {
        wprintf_s(L"\n Swipe the sensor to capture %s sample.",
                 (swipeCount == 1)?L"the first":L"another");

        hr = WinBioEnrollCapture(
                sessionHandle,  // Handle to open biometric session
                &rejectDetail   // [out] Failure information
                );

        wprintf_s(L"\n Sample %d captured from unit number %d.", 
                  swipeCount, 
                  unitId);

        if (hr == WINBIO_I_MORE_DATA)
        {
            wprintf_s(L"\n    More data required.\n");
            continue;
        }
        if (FAILED(hr))
        {
            if (hr == WINBIO_E_BAD_CAPTURE)
            {
                wprintf_s(L"\n  Error: Bad capture; reason: %d", 
                          rejectDetail);
                continue;
            }
            else
            {
                wprintf_s(L"\n WinBioEnrollCapture failed. hr = 0x%x", hr);
                goto e_Exit;
            }
        }
        else
        {
            wprintf_s(L"\n    Template completed.\n");
            break;
        }
    }

    // Discard the enrollment if the appropriate flag is set.
    // Commit the enrollment if it is not discarded.
    if (discardEnrollment == TRUE)
    {
        wprintf_s(L"\n Discarding enrollment...\n\n");
        hr = WinBioEnrollDiscard( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioLocateSensor failed. hr = 0x%x\n", hr);
        }
        goto e_Exit;    
    }
    else
    {
        wprintf_s(L"\n Committing enrollment...\n");
        hr = WinBioEnrollCommit( 
                sessionHandle,      // Handle to open biometric session
                &identity,          // WINBIO_IDENTITY object for the user
                &isNewTemplate);    // Is this a new template

        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioEnrollCommit failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }


e_Exit:
    if (sessionHandle != NULL)
    {
        WinBioCloseSession(sessionHandle);
        sessionHandle = NULL;
    }

    wprintf_s(L" Press any key to continue...");
    _getch();

    return hr;
}

Pendaftaran asinkron

Contoh kode berikut:

  • Memanggil WinBioOpenSession untuk membuka sesi biometrik dan terhubung ke kumpulan sistem.
  • Memanggil WinBioLocateSensor untuk menemukan unit biometrik.
  • Memanggil WinBioEnrollBegin untuk memulai urutan pendaftaran.
  • Memanggil WinBioEnrollCaptureWithCallback untuk memproses beberapa gesek jari. Fungsi ini asinkron dan menggunakan fungsi panggilan balik kustom untuk terus memproses pada utas terpisah. Contoh fungsi panggilan balik disertakan di bawah ini.
  • Memanggil WinBioWait untuk menunggu proses pendaftaran asinkron selesai atau dibatalkan.
  • Memanggil WinBioEnrollCommit untuk menyimpan templat.

Tautkan ke pustaka statis Winbio.lib untuk mengkompilasi sampel ini.

//------------------------------------------------------------------------
// EnrollSystemPoolWithCallback.cpp : Entry point for the application.
//
#include <windows.h>
#include <stdio.h>
#include <conio.h>
#include <winbio.h>


//------------------------------------------------------------------------
// Forward declarations.
//
HRESULT EnrollSysPoolWithCallback(
                      BOOL bCancel,
                      BOOL bDiscard,
                      WINBIO_BIOMETRIC_SUBTYPE subFactor);

VOID CALLBACK EnrollCaptureCallback(
                      __in_opt PVOID EnrollCallbackContext,
                      __in HRESULT OperationStatus,
                      __in WINBIO_REJECT_DETAIL RejectDetail);

typedef struct _ENROLL_CALLBACK_CONTEXT {
    WINBIO_SESSION_HANDLE SessionHandle;
    WINBIO_UNIT_ID UnitId;
    WINBIO_BIOMETRIC_SUBTYPE SubFactor;
} ENROLL_CALLBACK_CONTEXT, *PENROLL_CALLBACK_CONTEXT;

//------------------------------------------------------------------------
int wmain()
{
    HRESULT hr = S_OK;

    hr = EnrollSysPoolWithCallback(
                      FALSE, 
                      FALSE, 
                      WINBIO_ANSI_381_POS_RH_INDEX_FINGER);

    return 0;
}

//------------------------------------------------------------------------
// The following function enrolls a user's fingerprint in the system pool.
// The function calls WinBioEnrollCaptureWithCallback and waits for the
// asynchronous enrollment process to be completed or canceled.
//
HRESULT EnrollSysPoolWithCallback(
                      BOOL bCancel,
                      BOOL bDiscard,
                      WINBIO_BIOMETRIC_SUBTYPE subFactor)
{
    // Declare variables
    HRESULT hr = S_OK;
    WINBIO_IDENTITY identity = {0};
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;
    BOOLEAN isNewTemplate = TRUE;
    ENROLL_CALLBACK_CONTEXT callbackContext = {0};

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioEnumBiometricUnits failed. ");
        wprintf_s(L"hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Locate the sensor.
    wprintf_s(L"\n Swipe your finger to locate the sensor...\n");
    hr = WinBioLocateSensor( sessionHandle, &unitId);
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioLocateSensor failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Begin the enrollment sequence. 
    hr = WinBioEnrollBegin(
            sessionHandle,      // Handle to open biometric session
            subFactor,          // Finger to create template for
            unitId              // Biometric unit ID
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioEnrollBegin failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Set up the custom callback context structure.
    callbackContext.SessionHandle = sessionHandle;
    callbackContext.UnitId = unitId;
    callbackContext.SubFactor = subFactor;

    // Call WinBioEnrollCaptureWithCallback. This is an asynchronous
    // method that returns immediately.
    hr = WinBioEnrollCaptureWithCallback(
            sessionHandle,          // Handle to open biometric session
            EnrollCaptureCallback,  // Callback function
            &callbackContext        // Pointer to the custom context
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioEnrollCaptureWithCallback failed. ");
        wprintf_s(L"hr = 0x%x\n", hr);
        goto e_Exit;
    }
    wprintf_s(L"\n Swipe the sensor with the appropriate finger...\n");

    // Cancel the enrollment if the bCancel flag is set.
    if (bCancel)
    {
        wprintf_s(L"\n Starting CANCEL timer...\n");
        Sleep( 7000 );

        wprintf_s(L"\n Calling WinBioCancel\n");
        hr = WinBioCancel( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCancel failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }

    // Wait for the asynchronous enrollment process to complete
    // or be canceled.
    hr = WinBioWait( sessionHandle );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioWait failed. hr = 0x%x\n", hr);
    }

    // Discard the enrollment if the bDiscard flag is set.
    // Commit the enrollment if the flag is not set.
    if (bDiscard)
    {
        wprintf_s(L"\n Discarding enrollment...\n");
        hr = WinBioEnrollDiscard( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioLocateSensor failed. ");
            wprintf_s(L"hr = 0x%x\n", hr);
        }
        goto e_Exit;    
    }
    else
    {
        wprintf_s(L"\n Committing enrollment...\n");
        hr = WinBioEnrollCommit( 
                sessionHandle,      // Handle to open biometric session
                &identity,          // WINBIO_IDENTITY object for the user
                &isNewTemplate);    // Is this a new template

        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioEnrollCommit failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }

e_Exit:
    if (sessionHandle != NULL)
    {
        WinBioCloseSession(sessionHandle);
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Press any key to exit...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function is the callback for the Windows Biometric
// Framework WinBioEnrollCaptureWithCallback() function. 
//
VOID CALLBACK EnrollCaptureCallback(
    __in_opt PVOID EnrollCallbackContext,
    __in HRESULT OperationStatus,
    __in WINBIO_REJECT_DETAIL RejectDetail
    )
{
    // Declare variables.
    HRESULT hr = S_OK; 
    static SIZE_T swipeCount = 1;

    PENROLL_CALLBACK_CONTEXT callbackContext = 
        (PENROLL_CALLBACK_CONTEXT)EnrollCallbackContext;

    wprintf_s(L"\n EnrollCaptureCallback executing\n");
    wprintf_s(L"\n Sample %d captured", swipeCount++);

    // The capture was not acceptable or the enrollment operation
    // failed.
    if (FAILED(OperationStatus))
    {
        if (OperationStatus == WINBIO_E_BAD_CAPTURE)
        {
            wprintf_s(L"\n Bad capture; reason: %d\n", RejectDetail);
            wprintf_s(L"\n Swipe your finger to capture another sample.\n");

            // Try again.
            hr = WinBioEnrollCaptureWithCallback(
                    callbackContext->SessionHandle, // Open session handle
                    EnrollCaptureCallback,          // Callback function
                    EnrollCallbackContext           // Callback context
                    );
            if (FAILED(hr))
            {
                wprintf_s(L"WinBioEnrollCaptureWithCallback failed.");
                wprintf_s(L"hr = 0x%x\n", hr);
            }
        }
        else
        {
            wprintf_s(L"EnrollCaptureCallback failed.");
            wprintf_s(L"OperationStatus = 0x%x\n", OperationStatus);
        }
        goto e_Exit;
    }

    // The enrollment operation requires more fingerprint swipes.
    // This is normal and depends on your hardware. Typically, at least
    // three swipes are required.
    if (OperationStatus == WINBIO_I_MORE_DATA)
    {
        wprintf_s(L"\n More data required.");
        wprintf_s(L"\n Swipe your finger on the sensor again.");

        hr = WinBioEnrollCaptureWithCallback(
                callbackContext->SessionHandle,
                EnrollCaptureCallback,
                EnrollCallbackContext
                );
        if (FAILED(hr))
        {
            wprintf_s(L"WinBioEnrollCaptureWithCallback failed. ");
            wprintf_s(L"hr = 0x%x\n", hr);
        }
        goto e_Exit;
    }

    wprintf_s(L"\n Template completed\n");

e_Exit:

    return;
}

Menemukan unit biometrik

Contoh kode berikut menunjukkan cara menemukan unit biometrik yang diinstal.

Menemukan unit biometrik secara sinkron

Contoh kode berikut:

Untuk mengkompilasi sampel ini, tautkan ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT LocateSensor( )
{
    HRESULT hr = S_OK;
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioEnumBiometricUnits failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Locate the sensor.
    wprintf_s(L"\n Tap the sensor once...\n");
    hr = WinBioLocateSensor( sessionHandle, &unitId);
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioLocateSensor failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }
    wprintf_s(L"\n Sensor located successfully. ");
    wprintf_s(L"\n Unit ID = %d \n", unitId);

e_Exit:
    if (sessionHandle != NULL)
    {
        WinBioCloseSession(sessionHandle);
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Hit any key to exit...");
    _getch();

    return hr;
}

Menemukan unit biometrik secara asinkron

Contoh kode berikut:

  • Memanggil WinBioOpenSession untuk membuka sesi biometrik dan terhubung ke kumpulan sistem.
  • Memanggil WinBioLocateSensorWithCallback untuk menemukan sensor biometrik. Ini adalah fungsi asinkron yang mengonfigurasi subsistem biometrik untuk menemukan sensor pada utas lain. Output dari subsistem biometrik dikirim ke fungsi panggilan balik kustom, di sini disebut LocateSensorCallback.
  • Memanggil WinBioWait untuk menunggu proses asinkron selesai atau dibatalkan.

Untuk mengkompilasi sampel ini, tautkan ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT LocateSensorWithCallback(BOOL bCancel)
{
    HRESULT hr = S_OK;
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioOpenSession failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    wprintf_s(L"\n Calling WinBioLocateSensorWithCallback.");
    hr = WinBioLocateSensorWithCallback(
                sessionHandle,          // Open biometric session
                LocateSensorCallback,   // Callback function
                NULL                    // Optional context
                );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioLocateSensorWithCallback failed.");
        wprintf_s(L"hr = 0x%x\n", hr);
        goto e_Exit;
    }
    wprintf_s(L"\n Swipe the sensor ...\n");

    // Cancel the identification if the bCancel flag is set.
    if (bCancel)
    {
        wprintf_s(L"\n Starting CANCEL timer...\n");
        Sleep( 7000 );

        wprintf_s(L"\n Calling WinBioCancel\n");
        hr = WinBioCancel( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCancel failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }

    // Wait for the asynchronous identification process to complete 
    // or be canceled.
    hr = WinBioWait( sessionHandle );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioWait failed. hr = 0x%x\n", hr);
    }

e_Exit:

    if (sessionHandle != NULL)
    {
       wprintf_s(L"\n Closing the session.\n");

        hr = WinBioCloseSession(sessionHandle);
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCloseSession failed. hr = 0x%x\n", hr);
        }
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Hit any key to exit...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function is the callback for 
// WinBioLocateSensorWithCallback. The function filters the response 
// from the biometric subsystem and writes a result to the console window.
// 
VOID CALLBACK LocateSensorCallback(
    __in_opt PVOID LocateCallbackContext,
    __in HRESULT OperationStatus,
    __in WINBIO_UNIT_ID UnitId
    )
{
    UNREFERENCED_PARAMETER(LocateCallbackContext);

    wprintf_s(L"\n LocateSensorCallback executing.");

    // A sensor could not be located.
    if (FAILED(OperationStatus))
    {
        wprintf_s(L"\n LocateSensorCallback failed.");
        wprintf_s(L"OperationStatus = 0x%x\n", OperationStatus);
    }
    // A sensor was located.
    else
    {
        wprintf_s(L"\n Selected unit ID: %d\n", UnitId);
    }
}

Memverifikasi identitas pengguna

Verifikasi sinkron

Contoh kode berikut:

  • Memanggil WinBioOpenSession untuk membuka sesi biometrik dan terhubung ke kumpulan sistem.
  • Memanggil WinBioVerify untuk menentukan apakah sampel biometrik cocok dengan identitas pengguna saat ini yang masuk.

Untuk mengkompilasi sampel ini, tautkan ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT Verify(WINBIO_BIOMETRIC_SUBTYPE subFactor)
{
    HRESULT hr = S_OK;
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;
    WINBIO_REJECT_DETAIL rejectDetail = 0;
    WINBIO_IDENTITY identity = {0};
    BOOLEAN match = FALSE;

    // Find the identity of the user.
    hr = GetCurrentUserIdentity( &identity );
    if (FAILED(hr))
    {
        wprintf_s(L"\n User identity not found. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioOpenSession failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Verify a biometric sample.
    wprintf_s(L"\n Calling WinBioVerify - Swipe finger on sensor...\n");
    hr = WinBioVerify( 
            sessionHandle, 
            &identity, 
            subFactor, 
            &unitId, 
            &match,
            &rejectDetail
            );
    wprintf_s(L"\n Swipe processed - Unit ID: %d\n", unitId);
    if (FAILED(hr))
    {
        if (hr == WINBIO_E_NO_MATCH)
        {
            wprintf_s(L"\n- NO MATCH - identity verification failed.\n");
        }
        else if (hr == WINBIO_E_BAD_CAPTURE)
        {
            wprintf_s(L"\n- Bad capture; reason: %d\n", rejectDetail);
        }
        else
        {
        wprintf_s(L"\n WinBioVerify failed. hr = 0x%x\n", hr);
        }
        goto e_Exit;
    }
    wprintf_s(L"\n Fingerprint verified:\n", unitId);


e_Exit:
    if (sessionHandle != NULL)
    {
        WinBioCloseSession(sessionHandle);
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Press any key to exit...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function retrieves the identity of the current user.
// This is a helper function and is not part of the Windows Biometric
// Framework API.
//
HRESULT GetCurrentUserIdentity(__inout PWINBIO_IDENTITY Identity)
{
    // Declare variables.
    HRESULT hr = S_OK;
    HANDLE tokenHandle = NULL;
    DWORD bytesReturned = 0;
    struct{
        TOKEN_USER tokenUser;
        BYTE buffer[SECURITY_MAX_SID_SIZE];
    } tokenInfoBuffer;

    // Zero the input identity and specify the type.
    ZeroMemory( Identity, sizeof(WINBIO_IDENTITY));
    Identity->Type = WINBIO_ID_TYPE_NULL;

    // Open the access token associated with the
    // current process
    if (!OpenProcessToken(
            GetCurrentProcess(),            // Process handle
            TOKEN_READ,                     // Read access only
            &tokenHandle))                  // Access token handle
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot open token handle: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Zero the tokenInfoBuffer structure.
    ZeroMemory(&tokenInfoBuffer, sizeof(tokenInfoBuffer));

    // Retrieve information about the access token. In this case,
    // retrieve a SID.
    if (!GetTokenInformation(
            tokenHandle,                    // Access token handle
            TokenUser,                      // User for the token
            &tokenInfoBuffer.tokenUser,     // Buffer to fill
            sizeof(tokenInfoBuffer),        // Size of the buffer
            &bytesReturned))                // Size needed
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot query token information: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Copy the SID from the tokenInfoBuffer structure to the
    // WINBIO_IDENTITY structure. 
    CopySid(
        SECURITY_MAX_SID_SIZE,
        Identity->Value.AccountSid.Data,
        tokenInfoBuffer.tokenUser.User.Sid
        );

    // Specify the size of the SID and assign WINBIO_ID_TYPE_SID
    // to the type member of the WINBIO_IDENTITY structure.
    Identity->Value.AccountSid.Size = GetLengthSid(tokenInfoBuffer.tokenUser.User.Sid);
    Identity->Type = WINBIO_ID_TYPE_SID;

e_Exit:

    if (tokenHandle != NULL)
    {
        CloseHandle(tokenHandle);
    }

    return hr;
}

Verifikasi asinkron

Contoh kode berikut:

  • Memanggil WinBioOpenSession untuk membuka sesi biometrik dan terhubung ke kumpulan sistem.
  • Memanggil WinBioVerifyWithCallback untuk menentukan apakah sampel biometrik cocok dengan identitas pengguna saat ini yang masuk. Ini adalah fungsi asinkron yang mengonfigurasi subsistem biometrik untuk memverifikasi pengguna di utas lain. Output dari subsistem biometrik dikirim ke fungsi panggilan balik kustom, di sini disebut VerifyCallback.
  • Memanggil WinBioWait untuk menunggu proses asinkron selesai atau dibatalkan.

Untuk mengkompilasi sampel ini, tautkan ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT VerifyWithCallback(BOOL bCancel, WINBIO_BIOMETRIC_SUBTYPE subFactor)
{
    // Declare variables.
    HRESULT hr = S_OK;
    WINBIO_SESSION_HANDLE sessionHandle = NULL;
    WINBIO_UNIT_ID unitId = 0;
    WINBIO_REJECT_DETAIL rejectDetail = 0;
    WINBIO_IDENTITY identity = {0};

    // Find the identity of the user.
    hr = GetCurrentUserIdentity( &identity );
    if (FAILED(hr))
    {
        wprintf_s(L"\n User identity not found. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Connect to the system pool. 
    hr = WinBioOpenSession( 
            WINBIO_TYPE_FINGERPRINT,    // Service provider
            WINBIO_POOL_SYSTEM,         // Pool type
            WINBIO_FLAG_DEFAULT,        // Configuration and access
            NULL,                       // Array of biometric unit IDs
            0,                          // Count of biometric unit IDs
            NULL,                       // Database ID
            &sessionHandle              // [out] Session handle
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioOpenSession failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Verify a biometric sample asynchronously.
    wprintf_s(L"\n Calling WinBioVerifyWithCallback.\n");
    hr = WinBioVerifyWithCallback(
            sessionHandle,              // Open session handle
            &identity,                  // User SID or GUID
            subFactor,                  // Sample sub-factor
            VerifyCallback,             // Callback function
            NULL                        // Optional context
            );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioVerifyWithCallback failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }
    wprintf_s(L"\n Swipe the sensor ...\n");

    // Cancel the identification if the bCancel flag is set.
    if (bCancel)
    {
        wprintf_s(L"\n Starting CANCEL timer...\n");
        Sleep( 7000 );

        wprintf_s(L"\n Calling WinBioCancel\n");
        hr = WinBioCancel( sessionHandle );
        if (FAILED(hr))
        {
            wprintf_s(L"\n WinBioCancel failed. hr = 0x%x\n", hr);
            goto e_Exit;
        }
    }

    // Wait for the asynchronous identification process to complete 
    // or be canceled.
    hr = WinBioWait( sessionHandle );
    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioWait failed. hr = 0x%x\n", hr);
    }

e_Exit:
    if (sessionHandle != NULL)
    {
        WinBioCloseSession(sessionHandle);
        sessionHandle = NULL;
    }

    wprintf_s(L"\n Hit any key to continue...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function is the callback for WinBioVerifyWithCallback.
// The function filters the response from the biometric subsystem and 
// writes a result to the console window.
// 
VOID CALLBACK VerifyCallback(
  __in_opt PVOID VerifyCallbackContext,
  __in HRESULT OperationStatus,
  __in WINBIO_UNIT_ID UnitId,
  __in BOOLEAN Match,
  __in WINBIO_REJECT_DETAIL RejectDetail
  )
{
    UNREFERENCED_PARAMETER(VerifyCallbackContext);
    UNREFERENCED_PARAMETER(Match);

    wprintf_s(L"\n VerifyCallback executing");
    wprintf_s(L"\n Swipe processed for unit ID %d\n", UnitId);

    // The identity could not be verified.
    if (FAILED(OperationStatus))
    {
        wprintf_s(L"\n Verification failed for the following reason:");
        if (OperationStatus == WINBIO_E_NO_MATCH)
        {
            wprintf_s(L"\n No match.\n");
        }
        else if (OperationStatus == WINBIO_E_BAD_CAPTURE)
        {
            wprintf_s(L"\n Bad capture.\n ");
            wprintf_s(L"\n Bad capture; reason: %d\n", RejectDetail);
        }
        else
        {
            wprintf_s(L"VerifyCallback failed.");
            wprintf_s(L"OperationStatus = 0x%x\n", OperationStatus); 
        }
        goto e_Exit;
    }

    // The user identity was verified.
    wprintf_s(L"\n Fingerprint verified:\n");

e_Exit:
    return;
}

//------------------------------------------------------------------------
// The following function retrieves the identity of the current user.
// This is a helper function and is not part of the Windows Biometric
// Framework API.
//
HRESULT GetCurrentUserIdentity(__inout PWINBIO_IDENTITY Identity)
{
    // Declare variables.
    HRESULT hr = S_OK;
    HANDLE tokenHandle = NULL;
    DWORD bytesReturned = 0;
    struct{
        TOKEN_USER tokenUser;
        BYTE buffer[SECURITY_MAX_SID_SIZE];
    } tokenInfoBuffer;

    // Zero the input identity and specify the type.
    ZeroMemory( Identity, sizeof(WINBIO_IDENTITY));
    Identity->Type = WINBIO_ID_TYPE_NULL;

    // Open the access token associated with the
    // current process
    if (!OpenProcessToken(
            GetCurrentProcess(),            // Process handle
            TOKEN_READ,                     // Read access only
            &tokenHandle))                  // Access token handle
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot open token handle: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Zero the tokenInfoBuffer structure.
    ZeroMemory(&tokenInfoBuffer, sizeof(tokenInfoBuffer));

    // Retrieve information about the access token. In this case,
    // retrieve a SID.
    if (!GetTokenInformation(
            tokenHandle,                    // Access token handle
            TokenUser,                      // User for the token
            &tokenInfoBuffer.tokenUser,     // Buffer to fill
            sizeof(tokenInfoBuffer),        // Size of the buffer
            &bytesReturned))                // Size needed
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot query token information: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Copy the SID from the tokenInfoBuffer structure to the
    // WINBIO_IDENTITY structure. 
    CopySid(
        SECURITY_MAX_SID_SIZE,
        Identity->Value.AccountSid.Data,
        tokenInfoBuffer.tokenUser.User.Sid
        );

    // Specify the size of the SID and assign WINBIO_ID_TYPE_SID
    // to the type member of the WINBIO_IDENTITY structure.
    Identity->Value.AccountSid.Size = GetLengthSid(tokenInfoBuffer.tokenUser.User.Sid);
    Identity->Type = WINBIO_ID_TYPE_SID;

e_Exit:

    if (tokenHandle != NULL)
    {
        CloseHandle(tokenHandle);
    }

    return hr;
}

Mengelola info masuk

Penyedia kredensial dan manajer kredensial adalah komponen dalam Windows Biometric Framework. Penyedia mengambil kredensial pengguna dari penyimpanan aman dan merespons permintaan masuk, membuka kunci, perubahan kata sandi, dan elevasi UAC. Ini juga merespons selama peralihan pengguna cepat untuk masuk ke pengguna baru. Manajer memetakan kredensial masuk ke identitas biometrik dan menyimpan kredensial dengan aman. Pemetaan biasanya dibuat oleh aplikasi pendaftaran pihak ketiga selama pendaftaran biometrik, tetapi juga dapat dibuat oleh penyedia kredensial biometrik Windows selama masuk jika pengguna yang terdaftar mencoba mengautentikasi biometrik tetapi tidak terdaftar atau kredensial tidak cocok dengan yang ada di penyimpanan aman.

Panduan API Manajer Kredensial

  • Kredensial tidak dapat disimpan, dikueri, atau dihapus untuk akun Administrator Tamu atau Bawaan atau akun non-interaktif seperti LocalSystem, LocalService, atau NetworkService.
  • Semua fungsi mengembalikan kode kesalahan HRESULT yang mungkin merupakan kode kesalahan umum seperti E_ACCESSDENIED atau kesalahan khusus untuk manajer kredensial seperti WINBIO_E_UNKNOWN_ID.
  • Jika sesuai, E_ACCESSDENIED dikembalikan sebelum kode kesalahan yang lebih spesifik seperti SEC_E_LOGON_DENIED atau WINBIO_E_UNKNOWN_ID dikembalikan.
  • Pengguna yang hak istimewanya belum ditingkatkan dapat mengatur, mengkueri, atau menghapus kredensial hanya untuk akun mereka sendiri. Penelepon yang ditingkatkan dapat mengkueri status kredensial dan menghapus kredensial untuk pengguna lain.
  • Semua fungsi akan gagal dan mengembalikan WINBIO_E_CRED_PROV_DISABLED:
    • Untuk semua pengguna ketika penyedia kredensial tidak diaktifkan di seluruh sistem.
    • Untuk pengguna domain saat penyedia tidak diaktifkan untuk penggunaan domain.
  • Pemberitahuan peristiwa dihasilkan saat kredensial ditambahkan atau dihapus.

Mengatur kredensial

Contoh kode berikut:

  • Memanggil GetCurrentUserIdentity untuk mengambil objek WINBIO_IDENTITY untuk pengguna saat ini. GetCurrentUserIdentity adalah fungsi pembantu dan bukan bagian dari Windows Biometric Framework.
  • Memanggil fungsi pembantu GetCredentials untuk mengambil array byte yang berisi informasi autentikasi. GetCredentials menampilkan kotak dialog yang meminta kredensial kepada pengguna.
  • Memanggil WinBioSetCredential untuk menyimpan kredensial di penyimpanan.

Untuk mengkompilasi tautan fungsi ini ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Wincred.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT SetCredential()
{
    // Declare variables.
    HRESULT hr = S_OK;
    ULONG   ulAuthPackage = 0;
    PVOID   pvAuthBlob = NULL;
    ULONG   cbAuthBlob = 0;
    WINBIO_IDENTITY identity;
    PSID pSid = NULL;

    // Find the identity of the user.
    wprintf_s(L"\n Finding user identity.\n");
    hr = GetCurrentUserIdentity( &identity );
    if (FAILED(hr))
    {
        wprintf_s(L"\n User identity not found. hr = 0x%x\n", hr);
        return hr;
    }

    // Set a pointer to the security descriptor for the user.
    pSid = identity.Value.AccountSid.Data;

    // Retrieve a byte array that contains credential information.
    hr = GetCredentials(pSid, &pvAuthBlob, &cbAuthBlob);
    if (FAILED(hr))
    {
        wprintf_s(L"\n GetCredentials failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Set the credentials.
    hr = WinBioSetCredential(
            WINBIO_CREDENTIAL_PASSWORD,     // Type of credential.
            (PUCHAR)pvAuthBlob,             // Credentials byte array
            cbAuthBlob,                     // Size of credentials
            WINBIO_PASSWORD_PACKED);        // Credentials format

    if (FAILED(hr))
    {
        wprintf_s(L"\n WinBioSetCredential failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }
    wprintf_s(L"\n Credentials successfully set.\n");

e_Exit:
    // Delete the authentication byte array.
    if (NULL != pvAuthBlob)
    {
        SecureZeroMemory(pvAuthBlob, cbAuthBlob);
        CoTaskMemFree(pvAuthBlob);
        pvAuthBlob = NULL;
    }

    wprintf_s(L"\n Press any key to exit...");
    _getch();

    return hr;


}

//------------------------------------------------------------------------
// The following function displays a dialog box to prompt a user
// for credentials.
//
HRESULT GetCredentials(PSID pSid, PVOID* ppvAuthBlob, ULONG* pcbAuthBlob)
{
    HRESULT hr = S_OK;
    DWORD   dwResult;
    WCHAR   szUsername[MAX_PATH] = {0};
    DWORD   cchUsername = ARRAYSIZE(szUsername);
    WCHAR   szPassword[MAX_PATH] = {0};
    WCHAR   szDomain[MAX_PATH] = {0};
    DWORD   cchDomain = ARRAYSIZE(szDomain);
    WCHAR   szDomainAndUser[MAX_PATH] = {0};
    DWORD   cchDomainAndUser = ARRAYSIZE(szDomainAndUser);
    PVOID   pvInAuthBlob = NULL;
    ULONG   cbInAuthBlob = 0;
    PVOID   pvAuthBlob = NULL;
    ULONG   cbAuthBlob = 0;
    CREDUI_INFOW ui;
    ULONG   ulAuthPackage = 0;
    BOOL    fSave = FALSE;

    static const WCHAR WINBIO_CREDPROV_TEST_PASSWORD_PROMPT_MESSAGE[] =
           L"Enter your current password to enable biometric logon.";

    static const WCHAR WINBIO_CREDPROV_TEST_PASSWORD_PROMPT_CAPTION[] =
           L"Biometric Log On Enrollment";

    if (NULL == pSid || NULL == ppvAuthBlob || NULL == pcbAuthBlob)
    {
        return E_INVALIDARG;
    }

    // Retrieve the user name and domain name.
    SID_NAME_USE    SidUse;
    DWORD           cchTmpUsername = cchUsername;
    DWORD           cchTmpDomain = cchDomain;

    if (!LookupAccountSidW(
              NULL,             // Local computer
              pSid,             // Security identifier for user
              szUsername,       // User name
              &cchTmpUsername,  // Size of user name
              szDomain,         // Domain name
              &cchTmpDomain,    // Size of domain name
              &SidUse))         // Account type
    {
        dwResult = GetLastError();
        hr = HRESULT_FROM_WIN32(dwResult);
        wprintf_s(L"\n LookupAccountSidLocalW failed: hr = 0x%x\n", hr);
        return hr;
    }

    // Combine the domain and user names.
    swprintf_s(
        szDomainAndUser, 
        cchDomainAndUser, 
        L"%s\\%s", 
        szDomain, 
        szUsername);

    // Call CredPackAuthenticationBufferW once to determine the size,
    // in bytes, of the authentication buffer.
    if (!CredPackAuthenticationBufferW(
              0,                // Reserved
              szDomainAndUser,  // Domain\User name
              szPassword,       // User Password
              NULL,             // Packed credentials
              &cbInAuthBlob)    // Size, in bytes, of credentials
        && GetLastError() != ERROR_INSUFFICIENT_BUFFER)
        {
            dwResult = GetLastError();
            hr = HRESULT_FROM_WIN32(dwResult);
            wprintf_s(L"\n CredPackAuthenticationBufferW (1) failed: ");
            wprintf_s(L"hr = 0x%x\n", hr);
        }

    // Allocate memory for the input buffer.
    pvInAuthBlob = CoTaskMemAlloc(cbInAuthBlob);
    if (!pvInAuthBlob)
    {
        cbInAuthBlob = 0;
        wprintf_s(L"\n CoTaskMemAlloc() Out of memory.\n");
        return HRESULT_FROM_WIN32(ERROR_OUTOFMEMORY);
    }

    // Call CredPackAuthenticationBufferW again to retrieve the
    // authentication buffer.
    if (!CredPackAuthenticationBufferW(
              0,
              szDomainAndUser,
              szPassword,
              (PBYTE)pvInAuthBlob,
              &cbInAuthBlob))
    {
        dwResult = GetLastError();
        hr = HRESULT_FROM_WIN32(dwResult);
        wprintf_s(L"\n CredPackAuthenticationBufferW (2) failed: ");
        wprintf_s(L"hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Display a dialog box to request credentials.
    ui.cbSize = sizeof(ui);
    ui.hwndParent = GetConsoleWindow();
    ui.pszMessageText = WINBIO_CREDPROV_TEST_PASSWORD_PROMPT_MESSAGE;
    ui.pszCaptionText = WINBIO_CREDPROV_TEST_PASSWORD_PROMPT_CAPTION;
    ui.hbmBanner = NULL;

    dwResult = CredUIPromptForWindowsCredentialsW(
                   &ui,             // Customizing information
                   0,               // Error code to display
                   &ulAuthPackage,  // Authorization package
                   pvInAuthBlob,    // Credential byte array
                   cbInAuthBlob,    // Size of credential input buffer
                   &pvAuthBlob,     // Output credential byte array
                   &cbAuthBlob,     // Size of credential byte array
                   &fSave,          // Select the save check box.
                   CREDUIWIN_IN_CRED_ONLY |
                   CREDUIWIN_ENUMERATE_CURRENT_USER
                   );
    if (dwResult != NO_ERROR)
    {
        hr = HRESULT_FROM_WIN32(dwResult);
        wprintf_s(L"\n CredUIPromptForWindowsCredentials failed: ");
        wprintf_s(L"0x%08x\n", dwResult);
        goto e_Exit;
    }

    *ppvAuthBlob = pvAuthBlob;
    *pcbAuthBlob = cbAuthBlob;

e_Exit:
    // Delete the input authentication byte array.
    if (pvInAuthBlob)
    {
        SecureZeroMemory(pvInAuthBlob, cbInAuthBlob);
        CoTaskMemFree(pvInAuthBlob);
        pvInAuthBlob = NULL;
    };

    return hr;
}


//------------------------------------------------------------------------
// The following function retrieves the identity of the current user.
// This is a helper function and is not part of the Windows Biometric
// Framework API.
//
HRESULT GetCurrentUserIdentity(__inout PWINBIO_IDENTITY Identity)
{
    // Declare variables.
    HRESULT hr = S_OK;
    HANDLE tokenHandle = NULL;
    DWORD bytesReturned = 0;
    struct{
        TOKEN_USER tokenUser;
        BYTE buffer[SECURITY_MAX_SID_SIZE];
    } tokenInfoBuffer;

    // Zero the input identity and specify the type.
    ZeroMemory( Identity, sizeof(WINBIO_IDENTITY));
    Identity->Type = WINBIO_ID_TYPE_NULL;

    // Open the access token associated with the
    // current process
    if (!OpenProcessToken(
            GetCurrentProcess(),            // Process handle
            TOKEN_READ,                     // Read access only
            &tokenHandle))                  // Access token handle
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot open token handle: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Zero the tokenInfoBuffer structure.
    ZeroMemory(&tokenInfoBuffer, sizeof(tokenInfoBuffer));

    // Retrieve information about the access token. In this case,
    // retrieve a SID.
    if (!GetTokenInformation(
            tokenHandle,                    // Access token handle
            TokenUser,                      // User for the token
            &tokenInfoBuffer.tokenUser,     // Buffer to fill
            sizeof(tokenInfoBuffer),        // Size of the buffer
            &bytesReturned))                // Size needed
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot query token information: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Copy the SID from the tokenInfoBuffer structure to the
    // WINBIO_IDENTITY structure. 
    CopySid(
        SECURITY_MAX_SID_SIZE,
        Identity->Value.AccountSid.Data,
        tokenInfoBuffer.tokenUser.User.Sid
        );

    // Specify the size of the SID and assign WINBIO_ID_TYPE_SID
    // to the type member of the WINBIO_IDENTITY structure.
    Identity->Value.AccountSid.Size = GetLengthSid(tokenInfoBuffer.tokenUser.User.Sid);
    Identity->Type = WINBIO_ID_TYPE_SID;

e_Exit:

    if (tokenHandle != NULL)
    {
        CloseHandle(tokenHandle);
    }

    return hr;
}

Menghapus kredensial

Contoh kode berikut:

  • Memanggil GetCurrentUserIdentity untuk mengambil objek WINBIO_IDENTITY untuk pengguna saat ini. GetCurrentUserIdentity adalah fungsi pembantu dan bukan bagian dari Windows Biometric Framework.
  • Memanggil WinBioRemoveCredential untuk menghapus kredensial dari penyimpanan.

Untuk mengkompilasi tautan fungsi ini ke pustaka statis Winbio.lib dan sertakan file header berikut:

  • Windows.h
  • Stdio.h
  • Conio.h
  • Winbio.h
HRESULT RemoveCredential()
{
    HRESULT hr = S_OK;
    WINBIO_IDENTITY identity;

    // Find the identity of the user.
    wprintf_s(L"\n Finding user identity.\n");
    hr = GetCurrentUserIdentity( &identity );
    if (FAILED(hr))
    {
        wprintf(L"\n User identity not found. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    // Remove the user credentials.
    hr = WinBioRemoveCredential(identity, WINBIO_CREDENTIAL_PASSWORD);
    if (FAILED(hr)) 
    {
        wprintf(L"\n WinBioRemoveCredential failed. hr = 0x%x\n", hr);
        goto e_Exit;
    }

    wprintf_s(L"\n User credentials successfully removed.\n");

e_Exit:

    wprintf_s(L"\n Press any key to exit...");
    _getch();

    return hr;
}

//------------------------------------------------------------------------
// The following function retrieves the identity of the current user.
// This is a helper function and is not part of the Windows Biometric
// Framework API.
//
HRESULT GetCurrentUserIdentity(__inout PWINBIO_IDENTITY Identity)
{
    // Declare variables.
    HRESULT hr = S_OK;
    HANDLE tokenHandle = NULL;
    DWORD bytesReturned = 0;
    struct{
        TOKEN_USER tokenUser;
        BYTE buffer[SECURITY_MAX_SID_SIZE];
    } tokenInfoBuffer;

    // Zero the input identity and specify the type.
    ZeroMemory( Identity, sizeof(WINBIO_IDENTITY));
    Identity->Type = WINBIO_ID_TYPE_NULL;

    // Open the access token associated with the
    // current process
    if (!OpenProcessToken(
            GetCurrentProcess(),            // Process handle
            TOKEN_READ,                     // Read access only
            &tokenHandle))                  // Access token handle
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot open token handle: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Zero the tokenInfoBuffer structure.
    ZeroMemory(&tokenInfoBuffer, sizeof(tokenInfoBuffer));

    // Retrieve information about the access token. In this case,
    // retrieve a SID.
    if (!GetTokenInformation(
            tokenHandle,                    // Access token handle
            TokenUser,                      // User for the token
            &tokenInfoBuffer.tokenUser,     // Buffer to fill
            sizeof(tokenInfoBuffer),        // Size of the buffer
            &bytesReturned))                // Size needed
    {
        DWORD win32Status = GetLastError();
        wprintf_s(L"Cannot query token information: %d\n", win32Status);
        hr = HRESULT_FROM_WIN32(win32Status);
        goto e_Exit;
    }

    // Copy the SID from the tokenInfoBuffer structure to the
    // WINBIO_IDENTITY structure. 
    CopySid(
        SECURITY_MAX_SID_SIZE,
        Identity->Value.AccountSid.Data,
        tokenInfoBuffer.tokenUser.User.Sid
        );

    // Specify the size of the SID and assign WINBIO_ID_TYPE_SID
    // to the type member of the WINBIO_IDENTITY structure.
    Identity->Value.AccountSid.Size = GetLengthSid(tokenInfoBuffer.tokenUser.User.Sid);
    Identity->Type = WINBIO_ID_TYPE_SID;

e_Exit:

    if (tokenHandle != NULL)
    {
        CloseHandle(tokenHandle);
    }

    return hr;
}

 

 

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