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scan, keys: read less on a live drive; FMTS discs on the trusted key path

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- Key evidence reads the filesystem in batches with the metadata partition
  prefetched, not one command per sector (~1 s on a USB UHD).
- The live Blu-ray scan prefetches only the files it parses (~22 MB and
  three long seeks less on a UHD). The MKB is read from a 4 MiB prefix with
  its record headers walked; its bytes are unchanged.
- macOS: no fixed 500 ms sleep after unmounting before claiming the drive.
- FMTS discs use the trusted CPS path; unit-key samples skip forensic
  segment units. The parity_image_fmts_alternate_phase golden changes only
  in request count, on a fixture title under two keys (not a real disc).
This commit is contained in:
Matthew Jackson
2026-10-07 08:47:00 -07:00
parent af62d6d5d8
commit 15f7829468
16 changed files with 717 additions and 141 deletions
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tests/goldens/parity_image_fmts_alternate_phase.golden
+2 -2
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@@ -1,6 +1,6 @@
phase0 status = KeySetStatus { proven: 2, declared: Some(2), keyed: 2, clear: 0, lazy: 0, forensic: Resolved, origin: Some("online"), best_effort: false, requests: 2 }
phase0 status = KeySetStatus { proven: 2, declared: Some(2), keyed: 2, clear: 0, lazy: 0, forensic: Resolved, origin: Some("online"), best_effort: false, requests: 3 }
phase0 forensic-clip = 98304 bytes sha256:2f40ac12464652e99ffb371dc0ed2af6
phase0 copy = refused E7013
phase1 status = KeySetStatus { proven: 2, declared: Some(2), keyed: 2, clear: 0, lazy: 0, forensic: Resolved, origin: Some("online"), best_effort: false, requests: 3 }
phase1 status = KeySetStatus { proven: 2, declared: Some(2), keyed: 2, clear: 0, lazy: 0, forensic: Resolved, origin: Some("online"), best_effort: false, requests: 4 }
phase1 forensic-clip = 98304 bytes sha256:5026938565e0cc00c6399f36f8fc1fa2
phase1 copy = refused E7013