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User:Mmlange/Sandbox/Platform Configuration Register

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The Platform Configuration Register stores cryptographic hashes.


Registers 0-7 are reserved for TPM use. Registers 8-15 are available for OS and application use.[1]


According to the TPM specification, the PCRs must hold 160-bit values.


TPM integrity metrics include[2]:

  • PCR[0] CRTM, BIOS and Platform Extensions
  • PCR[1] Platform Configuration.
  • PCR[2] Option ROM Code
  • PCR[3] Option ROM Configuration and Data
  • PCR[4] IPL Code (usually the MBR)
  • PCR[5] IPL Code Configuration and Data (for use by the IPL code)
  • PCR[6] State Transition and Wake Events
  • PCR[7] Computer Manufacturer-Specific




References

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http://trousers.sourceforge.net/faq.html


Notes

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  1. ^ [https://www.trustedcomputinggroup.org/groups/TCG_1_4_Architecture_Overview.pdf "TCG Architecture Overview" from The Trusted Computing Group
  2. ^ [https://www.trustedcomputinggroup.org/groups/pc_client/TCG_PCSpecificSpecification_v1_1.pdf " * TCG PC Specific Implementation Specification Version 1.1" from TCG'