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Get Machine Certificate Example

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[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The following example shows how to retrieve the machine certificate collection:

HRESULT GetMachineCert( BYTE **ppbCert, DWORD *pcbCert )
{
    HRESULT hr = S_OK;
    IWMDRMProvider *pProvider = NULL;
    IWMDRMSecurity *pSecurity = NULL;
    BYTE rgbVersion[4];

    // Create a provider object.
    hr = WMDRMCreateProvider( &pProvider );
    if( FAILED( hr ) ) goto EXIT;

    // Create a security object from a provider object.
    hr = pProvider->CreateObject( IID_IWMDRMSecurity, (void**) &pSecurity );
    if( FAILED( hr ) ) goto EXIT;

    // Query the security to get the machine certificate.
    hr = pSecurity->GetMachineCertificate( WMDRM_CERTIFICATE_TYPE_V2,
        rgbVersion, ppbCert, pcbCert );

    if( FAILED( hr ) ) goto EXIT;

EXIT:

    SAFE_RELEASE( pSecurity );
    SAFE_RELEASE( pProvider );

    return hr;
}

DRM Import Examples