public bool TryAcquireServerChallenge(WindowsAuthenticationToken message)
{
bool result = false;
SecurityBufferDesciption clientToken = new SecurityBufferDesciption(message.Data);
SecurityBufferDesciption serverToken = new SecurityBufferDesciption(MaximumTokenSize);
try
{
SecurityInteger lifetime = new SecurityInteger(0);
uint contextAttributes;
if (NativeMethods.AcquireCredentialsHandle(null, "NTLM", SecurityCredentialsInbound, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero, ref credentials, ref lifetime) == 0)
{
if (NativeMethods.AcceptSecurityContext(ref credentials, IntPtr.Zero, ref clientToken, StandardContextAttributes, SecurityNativeDataRepresentation, out context, out serverToken, out contextAttributes, out lifetime) == IntermediateResult)
{
result = true;
}
}
}
finally
{
message.Data = serverToken.GetBytes();
clientToken.Dispose();
serverToken.Dispose();
}
return result;
}
