Open TC organizations bring forward the OSLO (Open Secure Loader) rely on the special instructions of the AMD CPU introduce dynamic credibility root DRTM. The technology loads a security code in the CPU cache, when the platform launch, firstly the CPU directly implement this code and measure the integrity of TPM, if the integrity measure passed, will transfer the control to this security Code, and then load OS flow the general credibility of the process start, the method replace he traditional use of trusted computing platform in the SRTM with DRTM, thereby receive the shortcomings of the SRTM susceptible to attack [25].