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This conference talk explores the Caliptra Subsystem firmware stack, presented by security and firmware experts from NVIDIA and Microsoft. Learn about the reference software development kit (SDK) that provides a consistent foundation for building quantum-resilient and standards-compliant Root of Trust (RoT) implementations for System-on-Chip (SoC) designers. The presentation details how the Caliptra Subsystem extends the Caliptra core system's capabilities beyond Identity, Secure Boot, Measured Boot, and Attestation to include Recovery, RoT Services, and Platform integration support. Discover how the Subsystem firmware is distributed as a Rust SDK with comprehensive components to build RoT Applications, addressing the specific initialization sequences and scenarios required by SoC RoTs. The speakers walk through the current architecture and design of the Caliptra Subsystem and outline future evolution plans for this important security infrastructure.
