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Learn about the Caliptra Subsystems Lifecycle Controller (LCC) and Fuse Controller (FC) in this 17-minute conference talk that explores secure device lifecycle management and debugging capabilities for open-source silicon Root-of-Trust systems. Discover how these subsystems, originally derived from OpenTitan RTL, have been enhanced to securely manage device lifecycle states including Manufacturing and Production Debug modes. Explore the updated architecture's unique support for secure state transitions, featuring a structured TAP interface for secure token injection and debug access management. Examine the design's emphasis on secure debug policy enforcement, which integrates multi-level debug capabilities and flexible control mechanisms specifically tailored for advanced SoC integration scenarios. Review practical implementation approaches and comprehensive security assessments that demonstrate contributions toward secure lifecycle management in future open-source silicon Root-of-Trust systems.
