The Tragedy of the Oxide Root of Trust

Oxide’s root-of-trust key ceremony shows what careful, transparent device security can look like - and how demanding it is. In a podcast discussion, the engineers described preparing and conducting the ceremony, including choosing a YubiHSM 2, printing key shares on a dot-matrix printer that was then destroyed, and documenting each operation. They explained the reasoning behind their safeguards and acknowledged correcting a mistake in their use of tamper-evident packaging. The effort builds on Oxide’s public security work, including disclosures about vulnerabilities in the NXP LPC55S69 microcontroller used as the root-of-trust hardware, and draws inspiration from the IANA DNSSEC key-signing ceremonies.

The central argument is that Oxide’s achievement is also a warning: even when a well-resourced team does things carefully, establishing a secure root of trust takes substantial expertise, time, equipment, and procedural discipline. Many small hardware companies cannot readily manage key ceremonies, secure manufacturing, code signing, credential provisioning, and device lifecycle security - and the ceremony is only the start. Secrecy around these processes leaves customers unable to learn from others or assess what vendors do on their behalf. The proposed path forward is for capable product makers to publish their practices and for semiconductor companies to improve the tools, products, and documentation that help customers implement identity, attestation, and secure boot. As with internet security before Let’s Encrypt, making good security practical and accessible matters more than merely urging organizations to do hard things.