/// <summary>
/// Reads the configured tpm devices from the configuration and
/// sets up the corresponding tpm contexts
/// </summary>
private void SetupTPMContexts()
{
IConnectionsConfiguration connectionConfig = (IConnectionsConfiguration)ConfigurationManager.GetSection("connections");
foreach (Iaik.Tc.TPM.Configuration.DotNetConfiguration.TPMDevice device in connectionConfig.TpmDevices)
{
try
{
_logger.InfoFormat("Setting up tpm context '{0}'", device.TPMName);
TPMWrapper tpmDevice = new TPMWrapper();
tpmDevice.Init(device.TPMType, device.Parameters);
TPMContext tpmContext = new TPMContext(device.TPMName, tpmDevice);
_tpmContexts.Add(device.TPMName, tpmContext);
_logger.InfoFormat("Flushing device '{0}'", device.TPMName);
foreach (TPMResourceType resourceType in new TPMResourceType[] {
TPMResourceType.TPM_RT_AUTH, TPMResourceType.TPM_RT_KEY
})
{
Parameters listLoadedHandlesParameters = new Parameters();
listLoadedHandlesParameters.AddPrimitiveType("capArea", CapabilityData.TPMCapabilityArea.TPM_CAP_HANDLE);
listLoadedHandlesParameters.AddPrimitiveType("handle_type", resourceType);
TPMCommandRequest listLoadedHandlesRequest = new TPMCommandRequest(TPMCommandNames.TPM_CMD_GetCapability,
listLoadedHandlesParameters);
TPMCommandResponse response = tpmDevice.Process(listLoadedHandlesRequest);
if (response.Status == false)
{
throw new Exception("An unknown tpm exception while flushing occured");
}
foreach (uint handle in response.Parameters.GetValueOf <HandleList> ("handles"))
{
Parameters flushParameters = new Parameters();
flushParameters.AddValue("handle", HandleFactory.Create(resourceType, handle));
TPMCommandRequest flushRequest = new TPMCommandRequest(TPMCommandNames.TPM_CMD_FlushSpecific, flushParameters);
TPMCommandResponse flushResponse = tpmDevice.Process(flushRequest);
if (flushResponse.Status == false)
{
throw new Exception("Something went wrong while flushing");
}
}
}
_logger.InfoFormat("Successfully setup tpm context '{0}' with type '{1}'", device.TPMName, device.TPMType);
}
catch (Exception ex)
{
_logger.FatalFormat("Error setting up tpm device '{0}', the device will not be available ({1})", device.TPMName, ex);
}
///Set the Assembly search order for incoming Parameters so that core classes are always at first
Parameters.AssemblySearchOrder = new Assembly[] {
typeof(TPMWrapper).Assembly, //lib core
typeof(ITypedParameter).Assembly
}; //lib common
}
}