Pluggable AACS key sources (keydb, online key service) for
libfreemkv. Each source looks a disc up
and hands libfreemkv its terminal Unit Keys via get_unit_keys; the library
does all derivation.
Build API documentation with cargo doc --no-deps --open for source construction,
keydb paths and online-query contracts. Run cargo test --tests to validate
parsing, caching and request guards. Tests use synthetic keys and local fixtures;
never commit real key material or credentials.
MIT — see LICENSE.