Computing devices and methods for constructing trusted chain of computing device

Abstract

Embodiments of this specification disclose computing devices and methods for constructing a trusted chain of a computing device, and relate to the field of information security technologies. The method includes following: A trusted module located on the computing device is started; the trusted module measures a CRTM of a processor on the computing device, and stores a measurement result in the trusted module; and when the CRTM is executed by the processor, a next level of code of the CRTM is measured, and a measurement result is stored in the trusted module; and when the next level of code of the CRTM is executed by the processor, a next level of code is measured, and a measurement result is stored in the trusted module, where by analogy, next levels of code is measured layer by layer to complete trusted chain establishment for the computing device.