Methods

Understand about the various types of attestation methods and the use cases.

Note: Currently, there is no industry standard for remote attestation protocols. As a result, CPU vendors and Cloud Service Providers have each developed their own proprietary solutions.

The right attestation method depends entirely on what you need to prove. This section breaks down the most common approaches, helping you select the best one for your specific security goals and use cases.

Method	Scope of Verification	Description
Raw Attestation	Initial Firmware/CPU State	A low-level measurement from the CPU vendor's hardware.
Secure Boot	Boot Chain	Verifies the bootloader and kernel against known measurements.
Virtual TPM (vTPM)	Runtime Environment	Measures applications, libraries, and configuration after the OS has booted.
Paravirtualized TPM	Runtime Environment	An interoperable alternative to a vTPM that uses standard drivers.