Source release 18.6.0

README.md

@@ -1,6 +1,6 @@
-# Widevine CE CDM 18.5.0
+# Widevine CE CDM 18.6.0
 
-Released 2024-03-28
+Released 2024-06-24
 
 ## Getting Started
 
@@ -10,85 +10,21 @@ following to learn more about the contents of this project and how to use them:
 The [Widevine Developer Site][wv-devsite] documents the CDM API and describes
 how to integrate the CDM into a system.
 
-## New in v18.5.0
+## New in 18.6.0
 
-Note: Releases v18.2-18.4 were skipped so that this release's version number
-matches the OEMCrypto version.
-
-**It is strongly recommended** for partners to update from v18.1 to v18.5 to
-address two major bugs in the CE CDM code which could result in lost offline
-licenses or app crashes. See _Bug Fixes_ for details.
+This is a minor release with bug fixes and test improvements.
 
 ## Features
 
-  - Supports up to OEMCrypto v18.5, including new OEMCrypto tests introduced
-    since OEMCrypto v18.1.
-  - Added additional logging when license request fails, to help diagnose what
-    went wrong.
-  - Improved support for HDCP v1.0-1.4 version.
-    - `Cdm::getStatusForHdcpVersion()` can now accept a specific HDCP 1.x minor
-      version (specifically 1.0, 1.1, 1.2, 1.3, or 1.4) when checking if
-      content can be decrypted.
-    - The legacy behavior is still available via `Cdm::HdcpVersion::kHdcp1_x`.
-    - See _Bug Fixes_ note about related bug in previous versions.
-  - Added support for Cast provisioning 4.0
-    - Cast uses a slightly different provisioning 4.0 protocol compared
-      to non-Cast cases.  The additions to the protocol are internal
-      to the library, and do not require API changes for CE CDM users
-    - Additional tests are included, these tests will automatically
-      skip for device which do not use provisioning 4.0.
-  - Improved performance for unencrypted data provided via `Cdm::decrypt()`.
-    - Some apps are known to always use decrypt calls, even if parts of the
-      data are completely unencrypted.  The CDM will now check if samples/
-      sub-samples of decryption batch data can skip the decryption stage
-      and instead directly copied to the secure output.
-  - Various minor performance improvements
-    - Reduced internal data copying.
-    - Test runtime improvements:
-      - Skipped set up for unsupported features.
-      - Improved test data storage management.
-      - Removed unused internal testing fixtures.
-    - Compile time improvements by better dependency checks for third-party
-      libraries.
-  - CE CDM now compiles clean with `-Wunused-parameter`.
-  - Added support for new provisioning flow for baked-in certificates
-    on devices using Widevine's embedded device certificate.
-    - Affected partners should check the L3 OEMCrypto documentation for
-      details.
-  - Added new tests for CE CDM and OEMCrypto v18.5 features.
+  - Added new test data for entitled licenses
+  - Added new tests for clear lead sample decryption
 
-### Bug Fixes
+## Bug Fixes
 
-  - Fixed major issue with loss of offline licenses when stored license count
-    exceeds OEMCrypto's usage table size limit.
-    - Issue only affects users with 300 or more downloaded offline licenses
-      across all apps.
-  - Fixed major issue with memory corruption when apps misuse the API by making
-    certain key operations before license is loaded.
-    - Specifically, if an app generates a license request via
-      `Cdm::generateRequest()`, then calls `Cdm::remove()` before
-      `Cdm::update()` with the license response it can cause the CDM to crash.
-  - Fixed mistaken test failures when the CE CDM and OEMCrypto versions were not
-    identical.
-  - Fixed an issue with DRM certificate serial number stability for
-    provisioning 4.0 devices.
-    - This only affected very specific devices when going through their
-      specific factory reset process.
-    - Added additional tests to catch future, similar errors.
-  - Fixed an issue with `Cdm::getKeyStatuses()` reporting error for certain
-    licenses which use specific HDCP v1.x minor versions.
-  - Fixed an issue with URL parsing in test code for renewal requests
-    - Certain tests used special URL parameters which were not properly
-      accounted for in the CE CDM's test utility code; this caused tests
-      to fail on otherwise working devices.
-  - Fixed the CAS tests sometimes not being skipped on non-CAS-supporting
-    devices.
-  - Removed tests that explicitly tested against Widevine's staging
-    provisioning servers.
-  - Fixed minor issue with tests which were generating many warnings from
-    expected behavior.
-    - These warning did not cause the tests to fail, but created a lot of noise
-      when trying to diagnose other failures
+  - Improved error logging for tests
+  - Small fixes to reduce compiler warning
+  - Fixed URL error found for tests using different license server SDK
+  - Skip CAS tests on non-CAS devices
 
 [CHANGELOG.md](./CHANGELOG.md) lists the major changes for each past release.