To Implement IComponentAuthenticate in a Service Provider

1. Include Sac.h and Scserver.h.

2. Link to Mssachlp.lib.

3. Add the Keys.c file that you received when you signed the license agreement for your project.

4. Declare a CSecureChannelServer object. This object must be available to all other objects implemented in your component.

5. Implement IComponentAuthenticate on the main object of your component. For a service provider, this is the object that implements IMDServiceProvider. Use code similar to the following example in the constructor for your main object:

   CMediaDevMgr::CmediaDevMgr()
   {
   g_pAppSCServer = new CSecureChannelServer();
   if (g_pAppSCServer)
   {
          g_pAppSCServer->SetCertificate(SAC_CERT_V1,
                                         (BYTE*)abCert,
                                         sizeof(abCert),
                                         (BYTE*)abPVK, 
                                         sizeof(abPVK) );
   }
   
   }
   

6. Delegate the methods of IComponentAuthenticate to the global CSecureChannelServer object. Use code such as:

   // Example to implement SACAuth.
   HRESULT CMediaDevMgr::SACAuth(DWORD dwProtocolID,
                                 DWORD dwPass,
                                 BYTE *pbDataIn,
                                 DWORD dwDataInLen,
                                 BYTE **ppbDataOut,
                                 DWORD *pdwDataOutLen)
   {
       HRESULT hr;
       if (g_pAppSCServer)
       {
           hr = g_pAppSCServer->SACAuth(dwProtocolID, 
                                        dwPass, 
                                        pbDataIn, 
                                        dwDataInLen, 
                                        ppbDataOut, 
                                        pdwDataOutLen);
       }
       else
       {
           hr = E_FAIL;
       }
       return hr;
   
   // Example of how to implement SACGetProtocols.
   HRESULT CMediaDevMgr::SACGetProtocols(DWORD **ppdwProtocols,
                                         DWORD *pdwProtocolCount)
   {
       HRESULT hr;
       if (g_pAppSCServer)
       {
           hr = g_pAppSCServer->SACGetProtocols(ppdwProtocols,
                                                pdwProtocolCount);
       }
       else
       {
           hr = E_FAIL;
       }
       return hr;
   }
   

7. When the caller has not been authenticated, return WMDM_E_NOT_CERTIFIED from all of your methods.

See Also

• Secure Authenticated Channel Interface