Confidential Computing and Hardware Root of Trust: Silicon PUF, Secure Boot, TPM 2.0, Intel TDX, AMD SEV-SNP, ARM CCA, and Physical Fault-Injection Attacks

Deep End Era. Engineering with Sankalp · Oct 29, 2026 · 1h 12m

In traditional computing, the operating system kernel and cloud hypervisor are all-powerful gods that can read every byte of your application's memory. Confidential Computing flips that threat model upside down: the cloud host, hypervisor, and physical DRAM bus are all treated as untrusted. We trace hardware roots of trust from silicon PUFs, Secure Boot, and TPM 2.0 PCRs to AMD SEV-SNP, Intel TDX, ARM CCA Realms, and physical glitch defenses.

Chapters

00:00:00 Opening: When the Cloud Hypervisor Is the Attacker

00:04:17 How a Silicon Chip Knows Who It Is: eFuses, Mask ROM, and Silicon Physical…