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Restore AACS PK key-processing path in keysources

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unit_keys_from now resolves the Media Key in order: stored per-disc MK
-> keydb Processing Key pool (mk_from_pk vs this disc's own MKB) ->
device-key pool (mk_from_dk), then MK+VID -> VUK -> UK. MK/VUK entries
still honored directly; cross-disc MK-pool brute stays retired. Fixes the
factually-wrong justifying comment + adds PK-pool KATs.
This commit is contained in:
Matthew Jackson
2026-06-26 17:03:58 -07:00
parent 6805ad22d4
commit 946632d9fb
6 changed files with 228 additions and 39 deletions
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src/lib.rs
+1 -1
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@@ -38,7 +38,7 @@ pub use libfreemkv::{DiscInputs, KeySource};
/// An ordered composition of key sources, driven as one. [`MultiSource::get_uk`]
/// tries each inner source in order and returns the first non-empty Unit Key
/// set. **The caller supplies the list AND the order** — local-first `[Keydb,
/// Online]`, online-first `[Online, Keydb]`, resume `[Mapfile, Keydb]`, etc. —
/// Online]`, online-first `[Online, Keydb]`, etc. —
/// so the "which sources, in what order" policy lives entirely with the
/// application, not the library. `MultiSource` is itself a [`KeySource`], so it
/// nests and composes.