Root of Trust

Identity Source

Hardware manufacturers embed unique keys into the silicon at the time of fabrication. The root of trust uses these keys to sign and verify data, ensuring that the device can prove its identity to a remote server. This physical link between the hardware and the security identity is much harder to forge than a software based credential.

Chain Authentication

Each piece of software verifies the next one before allowing it to run. The root of trust starts this chain by checking the signature of the bootloader, which then checks the kernel. If any link in the chain is found to be invalid, the system halts to prevent the execution of unauthorized code.

Boot Verification

Integrity checks happen every time the device is powered on to ensure that the firmware has not been tampered with. Because the root of trust is protected from changes, it remains a reliable reference even if the rest of the system is compromised. This architecture is the primary defense against persistent malware that attempts to hide in the low level software.