Intel Trusted Execution Technology (TXT)

It is used both for SRTM and DRTM.

• SRTM: Uses a BIOS ACM

• DRTM: Uses a Secure Initialization (SINIT) ACM

  • This ACM is also stored in the BIOS

DRTM.

• Uses 2 TPM PCRs

  • PCR 17 - measurement of the SINIT ACM

  • PCR 18 - measurement of the OS

Intel TXT SRTM