Source release 19.4.0

README.md

@@ -1,6 +1,6 @@
-# Widevine CE CDM 19.3.0
+# Widevine CE CDM 19.4.0
 
-Released 2024-09-04
+Released 2024-11-27
 
 ## Getting Started
 
@@ -10,37 +10,48 @@ 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 v19.3.0
+## New in v19.4.0
 
-This is a minor release with bug fixes and test improvements, as well as
-internal code-quality cleanups that do not affect the CDM's behavior. However,
-because of improvements to the BCC Factory Upload Tool, we recommend that all
-partners who use this tool upgrade to version 19.3.0.
+This is a minor release with bug fixes and test improvements.
 
 ### Features
 
-  - Added workaround for OEMCrypto implementations with slightly corrupted build
-    information
-  - The BCC Factory Upload Tool supports new command-line options for dry runs,
-    batch checks, version-checking, and verbose output.
+ - Add support for new OEMCrypto_GetBCCSignatureType() API. This API is optional
+   and only used on devices that support Provisioning 4 with a Phase 3 DICE
+   chain.
+   - Add credential types to client identification protobuf
+   - Return BCC signature type into client identification protobuf
+ - BCC extraction tool updates and refactoring
+   - Rewrite BCC, DeviceInfo and CSR Payload validators to cover info parsing,
+     validating and updating unit tests
+   - Update error codes returned by cbor/provisioning 4.0 validators to be less
+     severe when possible
+   - Add a few required fields for test-generated BCC
+ - Include licensing files with this release and future CE CDM releases
 
 ### Tests
 
-  - Added new tests to better validate the behavior of
-    `OEMCrypto_BuildInformation()`
-    - Verifies output length is set correctly
-    - Verifies content is ASCII JSON without trailing null bytes
-    - Verifies documented JSON fields: required fields are present, and optional
-      and required fields are the correct JSON types
+ - Update license release tests to accomodate differences in behavior for CE
+   CDM and Android
+ - Update some CAST tests to enforce format of the message signed by
+   OEMCrypto_GenerateRSASignature()
+ - Add tool to extract BCC and build info for BCC uploading test
+ - Skip usage table tests on devices that don't support usage tables
+ - Fix key type used in InstallOemPrivateKeyCanBeUsed test
+ - Re-enable OEMCrypto security tests
+ - Allow multiple callbacks in TestSleep class to prevent multiple classes
+   trying to register a callback
+ - Improve error logging for tests
+   - Add log statement on failure when device with a TEST_ONLY system ID cannot
+     play production content
 
 ### Bug Fixes
 
-  - Fixed decrypt failures on devices with low TEE memory caused by sending an
-    output buffer to decrypt that was much larger than necessary
-  - Several BCC Factory Upload Tool fixes:
-    - Added the missing `FileSystem::Exists()` function
-    - Fixed a bug causing the output to be unnecessarily padded
-    - Fixed an issue where fields containing JSON were not properly escaped
+ - Fix HLS parsing of bad content IDs
+ - Revert change to limit output buffer size during decrypt fallback due to
+   failures seen in 19.3 because the output buffer was not big enough
+ - Update blank OEMCrypto devsite test pages
+ - Small fixes to reduce compiler warnings
 
 [CHANGELOG.md](./CHANGELOG.md) lists the major changes for each past release.