Core Root of Trust for Measurement (CRTM)

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Abbreviation(s) and Synonym(s):

CRTM

NIST SP 800-147, NISTIR 8320A

Definition(s):

The first piece of BIOS code that executes on the main processor during the boot process. On a system with a Trusted Platform Module the CRTM is implicitly trusted to bootstrap the process of building a measurement chain for subsequent attestation of other firmware and software that is executed on the computer system.
Source(s):
NIST SP 800-147

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.

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Core Root of Trust for Measurement (CRTM)

Glossary Comments