wolfBoot can use the wolfTPM 2.0 software interface in bare metal environments and take advantage of your pre-existing TPM silicon, including Microchip’s ATTPM20P, ST33TP*, Infineon SLB9670 and Nations Tech Z32H330TC modules.
Measured Boot uses the TPM Platform Configuration Registers (PCR)? to determine if the boot parameters remain the same. The PCR’s allow SHA-1 or SHA-256? hash reset, update and read. There are typically 24 of these PCR’s available.
wolfTPM and wolfBoot support use in a bare-metal environment with no external dependencies. This enables reduced code size, minimal attack surfaces and ease of maintenance.
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