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Security Implementation

Under Development

This documentation is currently under active development. Content and procedures may change as we refine the Avocado OS platform.

Avocado OS implements a comprehensive defense-in-depth security architecture that establishes an unbroken chain of trust from hardware through kernel and all loaded extension layers. The system provides a board-agnostic command-line interface that abstracts away complex, vendor-specific mechanisms to establish a hardware root of trust, while dm-verity provides continuous integrity verification for read-only filesystems by checking each block against a pre-computed hash tree.

Security features are integrated into the build system from the start, enabling security-by-default development builds that use the same security controls as production builds. The system includes intelligent power management with ordered shutdown sequences on power failure, fault-tolerant temperature management with thermal monitoring and adaptive performance throttling, and store-and-forward architecture using a transaction-based model for system management operations to ensure consistency even with intermittent connectivity.

Defense-in-Depth Security:

  • Cryptographic chain of trust from hardware to application runtime
  • Board-agnostic secure boot implementation across platforms
  • dm-verity continuous integrity verification for filesystem protection
  • LUKS encryption with hardware-backed key storage support

Security Continuity:

  • Security-by-default development builds with same controls as production
  • Incremental hardening for progressive security feature activation
  • Extension-level security isolation with defined boundaries
  • Environmental protection with intelligent power and thermal management

Next Steps​