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UEFI Utility to Read TPM 1.2 PCRs

In this post, I provide the source code for a UEFI shell utility to print out all the Platform Configuration Registers (PCRs) for a TPM 1.2 (Trusted Platform Module, version 1.2) and briefly discuss SRTM versus DRTM.

UEFI-based Windows 10 Platform - Failure to Boot Due to Missing or Corrupt BCD

This post describes the role of the BCD store in booting Windows 10 on a UEFI-based platform. It describes a number of other files used in the boot process and a workaround for booting your system from the UEFI shell should you encounter the 0xc0000034 error code.

Accessing TPM Functionality From UEFI Shell - Part 1

This is the first in a series of posts which demonstrate how to access, use and modify TPM 1.2 and TPM 2.0 resources via a series of UEFI shell applications.

UEFI Shell Utility to Display TPM TrEE Capabilities

In the post, I present a small UEFI utility for examining TrEE Capabilities from the UEFI shell. TrEE is an EFI protocol which supports a subset of the TCG TPM 2.0 library specification.

List UEFI Secure Boot Certificate Contents

In this post, I dive deep into UEFI Authenticated Variables to show you how UEFI Secure Boot is implemented. I also provide the source code for a simple UEFI utility which outputs information about the X.509 certificates in the Secure Boot keys.