otpGarmin, branch v0.3.0

docs: document the storage format and record M3 results; bump to 0.3.0

2026-10-19T13:27:37+00:00

Co-Authored-By: Claude Opus 5.5

test(storage): cover records, vault, PINs, lockout and migrations

2026-10-19T13:27:37+00:00

34 new tests (65 per device): round trips per entry type, every tampered byte, swapped records, the pending queue, the entry cap, a full store at 67 fill levels, the lockout schedule on a fake clock including restarts, erase, PIN change and reset, auto-lock wiping, and v0 to v1 migration. Adds an in-memory store with a size limit and storage benchmarks. Co-Authored-By: Claude Opus 5.5

feat(storage): add the encrypted vault, PIN keys, lockout, session and migrations

2026-10-19T13:27:37+00:00

Records are one ByteArray each: a readable TLV header plus an encrypt-then-MAC box whose aad binds the entry ID and the header. The device key seals unlocked entries and pending items; a random master key, wrapped under a PBKDF2 PIN key, seals locked ones. Wrong PINs are counted before the check, with delays on the trusted clock and an uptime fallback. Bytes.toUtf8 validates UTF-8 first, because the native conversion crashes on invalid input. Co-Authored-By: Claude Opus 5.5

docs: record M2 results and bump version to 0.2.0

2026-10-18T21:44:18+00:00

CHANGELOG 0.2.0; PERFORMANCE (simulator benchmarks and what they mean for the watch); TESTING (vector sources, M2 results, watchdog caveat); FEASIBILITY (verified: no native HMAC-SHA1, AES-256 works, Long semantics); README status and targets; developer-guide Monkey C facts. Co-Authored-By: Claude Opus 5.5

feat(spike): add the M1 settings spike app and make targets

2026-10-18T21:44:18+00:00

A separate throwaway app (own app ID, no permissions) that shows what the Garmin Connect app delivers per settings field and writes values back, to measure the undocumented settings limits on the real phone and watch. Includes length-marked test strings, `make spike` / `make spike-sim`, `make vectors`, and step-by-step instructions in docs/SETTINGS_SPIKE.md. Co-Authored-By: Claude Opus 5.5

test: add cross-checked crypto/OTP vectors, unit tests and stricter screenshots

2026-10-18T21:44:18+00:00

- gen_vectors.py: RFC/FIPS/NIST vectors recomputed with Python's stdlib (openssl for AES) before use, plus seeded cases around SHA padding boundaries, 2038 and 2100; generates test/data/Vectors.mc. - 31 Monkey C tests (hashes, HMAC, PBKDF2, HKDF, AES, sealed records incl. every-byte tamper detection, Base32 errors, 100 OTP and 12 Steam vectors, clock, jobs) and a benchmark; pass on all four test devices. - Screenshot tolerance 0.01 %: one changed character no longer passes. - Golden images updated for version 0.2.0. Co-Authored-By: Claude Opus 5.5

feat(otp): add Base32 decoding, HOTP, TOTP and Steam Guard codes

2026-10-18T21:44:18+00:00

Base32 accepts any case, spaces, hyphens and missing padding, and reports the exact position of a bad character. TOTP uses 64-bit time, so codes stay correct after 2038. Steam Guard is a separate, optional code type. Co-Authored-By: Claude Opus 5.5

feat(crypto): add SHA-512, HMAC, PBKDF2, HKDF, AES-256 records and self-test

2026-10-18T21:44:18+00:00

- Sha512: FIPS 180-4 in Monkey C (no native SHA-512), rotations inlined with precomputed masks; constants derived from the primes, not typed. - Hmac: RFC 2104 over SHA-1/256/512 (native HMAC only supports SHA-256). - Kdf: resumable PBKDF2-HMAC-SHA256 job with calibration bounds (2,000-200,000 iterations) and HKDF-SHA256. - Aes: CBC with PKCS#7 over the native cipher; AES-256 chosen. - SealedBox: encrypt-then-MAC records (HKDF-split keys, length-prefixed aad, constant-time tag check before decryption). - SelfTest: known-answer tests for every primitive at start-up. - Bytes (wipe, constant-time equal), Clock (2038-safe widening, trusted clock), Jobs (bounded steps against the watchdog, timer runner). Co-Authored-By: Claude Opus 5.5

docs: add developer, testing and performance guides; record M0 results

2026-10-18T19:10:37+00:00

- DEVELOPER_GUIDE: workflow, how the tooling works (verified simulator behaviour), conventions and how to add devices. - TESTING and PERFORMANCE: test layers, M0 results and measured numbers. - FEASIBILITY: what M0 verified (watchdog 120k/240k, 10 MB storage in device profiles, unreliable monkeydo exit code, icon sizes). - README status, new make targets and layout; CHANGELOG 0.1.0. - Author/Summary headers on every document, including the original brief. Co-Authored-By: Claude Opus 5.5

feat(app): add minimal watch app with smoke test and per-size icons

2026-10-18T19:10:37+00:00

The M0 placeholder app: AppBase entry point, home screen with name and version, debug-only diagnostics (start-up time, memory) and a unit test that runs in the headless simulator. Builds with strict type checking and zero warnings for all 72 products; icons.jungle gives every product a launcher icon of its exact size. Co-Authored-By: Claude Opus 5.5