This project is about how to compute the identity of the remote computer. Server side is built on a TPM-based computer, when some other computer want to know the integrity of the TPM-based computer, the computer can send a request through client side built on it. When the TPM-computer received the request, it sends corresponding data to remote computer, then remote computer can compute the integrity of the TPM-based computer and decide whether to trust it or not. This technology is very useful in Today's computing field and greatly enhanced the safety of computing network.