intel r trusted execution engine interface download

Links for other system/motherboard manufacturers will be provided when available.

Resources from system/motherboard manufacturers Note 'Trusted Boot: Verifying the Xen Launch' (PDF). Intel Trusted Execution Technology (Intel® TXT) Software Development Guide (PDF). ^ 'TPM 2.0 Library Specification FAQ'.^ CRTM is measured by the processor and initial BIOS code is measured by the ACM (all other measurements made by BIOS or other firmware code) but only after that code had been measured.Open-source projects also utilize the TXT functionality for example, tboot provides a TXT-based integrity system for the Linux kernel and Xen hypervisor. Numerous server platforms include Intel TXT, and TXT functionality is leveraged by software vendors including HyTrust, PrivateCore, Citrix, and VMware.

The PCR extension mechanism is crucial to establishing a Chain of trust in layers of software (see below). that has been measured had been altered or corrupted. Therefore, if any module being measured has been modified, the resulting PCR measurement will be different and thus it is easy to detect if any code, configuration, data, etc. The effect is that the only way to arrive at a particular measurement in a PCR is to extend exactly the same measurements in exactly the same order. This means that the TPM takes the current value of the PCR and the measurement to be extended, hashes them together, and replaces the content of the PCR with that hash result. To ensure a particular sequence of measurements, hash measurements in a sequence are not written to different PCRs, but rather a PCR is 'extended' with a measurement. TCG requires that code not be executed until after it has been measured.

Measurements can be of code, data structures, configuration, information, or anything that can be loaded into memory.

Intel r trusted execution engine interface download