julian
bfe64032d8
Turborepo (pnpm workspaces) with all dependencies pinned to latest mutually-compatible versions: turbo 2.9, TypeScript 6, Fastify 5, React 19, Vite 8, better-sqlite3 12 + Drizzle ORM 0.45. Layout: - apps/server Fastify backend (local JWT auth + role guard, /health) - apps/web React 19 + Vite 8 operator SPA - packages/db Drizzle schema on SQLite/WAL; append-only events + users - packages/devices reader/printer/relay adapter interfaces (intent-only relay) - packages/shared shared domain types Architecture constraints from the design wiki are encoded in the scaffold: append-only hash-chained + signed event log, device-agnostic adapters, "a barrier is not a door" (relay expresses intent only), fully-local offline-first auth. wiki/ is an LLM-maintained Obsidian knowledge base (28 pages) ingested from the architecture & design notes, with its own maintenance schema. Verified: pnpm install, full turbo build (5/5), server boots and serves /health, drizzle-kit generates the initial migration.
25 lines
969 B
Markdown
25 lines
969 B
Markdown
---
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type: entity
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tags: [parking, hardware, security, crypto]
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sources: [parking-system-architecture]
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updated: 2026-06-14
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---
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# ATECC608 (secure element)
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An inexpensive **secure element** holding a signing key that **cannot be extracted, even by
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someone who owns the machine**. The keystone of integrity in this system. (See
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[[parking-system-architecture]] §3, §7.)
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Two distinct uses:
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1. **Host-side event signing.** Each event in the [[append-only-event-chain]] is signed by the
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ATECC608 on the host machine. This is what makes the hash chain **unforgeable** rather than
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merely self-consistent.
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2. **Custom controller command authentication.** On the [[esp32-custom-controller]], it holds
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the key(s) for [[challenge-response-auth]] — generated on-chip, non-extractable, so popping
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the cabinet and dumping flash yields nothing usable.
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Confirming ATECC608 wiring/usage on both ends is [[open-questions]] #6. Listed in the [[bom]]
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on the host machine.
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