> OpenTitan’s “Earl Grey”, will be the plan of record hardware RoT for [2025] Chromebooks.. Caliptra, another open source Root of Trust project with wide industry adoption, has incorporated a considerable amount of OpenTitan’s IP into its design.. OpenTitan’s CPU core, the Ibex RISC-V microcontroller, is an important project in its own right.. Microsoft based its CHERIoT-Ibex design on lowRISC’s commercial-grade Ibex CPU core, extending it with the proven CHERI hardware security extensions.
> Caliptra consists of IP and firmware for an integrated Root of Trust block.. targets datacenter-class SoCs like CPUs, GPUs, DPUs, TPUs.. implementing a Root of Trust for Measurement (RTM) block inside an SoC. A Caliptra integration provides the SoC with Identity, Measured Boot and Attestation capabilities.
Do I understand that correctly that this is basically an open-source TPM chip?
If so, that would be pretty neat. As long as it is compatible with existing TPM chips, as I doubt there's much enthusiasm of vendors to support OpenTitan otherwise
OpenTitan’s mission is to raise the security bar industry-wide by implementing a transparent, logically secure hardware root of trust with wide application.. from data center integrations, to embedded security applications such as security keys and smart cards.. OpenTitan can be used to implement the full Trusted Platform Module (TPM) 2.0 specification to meet client and server platform use cases.
> OpenTitan’s “Earl Grey”, will be the plan of record hardware RoT for [2025] Chromebooks.. Caliptra, another open source Root of Trust project with wide industry adoption, has incorporated a considerable amount of OpenTitan’s IP into its design.. OpenTitan’s CPU core, the Ibex RISC-V microcontroller, is an important project in its own right.. Microsoft based its CHERIoT-Ibex design on lowRISC’s commercial-grade Ibex CPU core, extending it with the proven CHERI hardware security extensions.
For servers, https://github.com/chipsalliance/Caliptra & https://146a55aca6f00848c565-a7635525d40ac1c70300198708936b4...
> Caliptra consists of IP and firmware for an integrated Root of Trust block.. targets datacenter-class SoCs like CPUs, GPUs, DPUs, TPUs.. implementing a Root of Trust for Measurement (RTM) block inside an SoC. A Caliptra integration provides the SoC with Identity, Measured Boot and Attestation capabilities.