/// <summary>
/// Returns security context access token
/// </summary>
private WindowsIdentity GetContextIdentity()
{
// check object state
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
// query context token
IntPtr accessToken = IntPtr.Zero;
int error = SSPINative.QuerySecurityContextToken(
ref _contextHandle,
out accessToken);
if (error < 0)
{
throw new SSPIException(error, "Could not determine security context identity");
}
return(new WindowsIdentity(accessToken));
}
