JujuforceandClaude Opus 4.8
d79ded6ee5
Forge three small fixtures with no proprietary content so the e2e test runs by default and covers the full decrypt+extract path, including the delta/base VHD merge: - TEST_T001_..._0.opt encrypted exFAT (OPTION key) - TEST_1.00.00_..._0.app base APP: outer NTFS -> internal_0.vhd (fixed) -> inner NTFS - TEST_1.01.00_..._1_1.00.00.app delta APP: differencing internal_1.vhd, auto-merged with base by GUID The APP fixtures use the synthetic game id TEST, decrypted via the committed TEST.bin external key (also exercising that key-file fallback). e2e.rs copies the fixtures + key into a temp dir and runs from there so the delta finds its base and the key. .gitignore whitelists only these synthetic files so real containers dropped in fixtures/ stay private. The generator is kept local, not committed. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Test fixtures
These are synthetic SEGA fscrypt containers used by tests/e2e.rs. They
contain only dummy files (a few text/XML/stub binaries), so they are safe to
commit — there is no proprietary game content inside.
| File | Type | What it exercises |
|---|---|---|
TEST_T001_20240101120000_0.opt |
OPTION | exFAT decrypt + extract (built-in OPTION key) |
TEST_1.00.00_20240101120000_0.app |
APP (base) | outer NTFS → internal_0.vhd (fixed VHD) → inner NTFS extract |
TEST_1.01.00_20240102120000_1_1.00.00.app |
APP (delta) | differencing internal_1.vhd, auto-merged against the base by VHD GUID |
TEST.bin |
key | external key (16-byte key + 16-byte IV) for game id TEST |
The delta is a real differencing VHD linked to the base; decrypting it (with the
base alongside) merges the two and yields the base files plus the delta's added
data/patch_notes.txt and a modified readme.txt.
The .app fixtures use the synthetic game id TEST, which is not in the
built-in key table — so they are decrypted via the external-key-file fallback
using the committed TEST.bin (this also exercises that fallback path).
tests/e2e.rs copies TEST.bin next to the containers and runs from there so
the binary finds it. The OPTION fixture uses the built-in OPTION key. Everything
here — keys and filesystem data alike — is synthetic.
You can also drop your own real .app/.opt files in this folder to test
against them; everything here except these committed fixtures is git-ignored.
Regenerating
These are generated by a local, uncommitted script set (NTFS/exFAT image
creation in Docker + a small SEGA fscrypt packer adapted from
beerpsi/x). The byte output is not
reproducible (NTFS/exFAT embed creation timestamps), but regenerated fixtures are
functionally equivalent.