b5637c89cb
There were no new changes to the OEMCrypto code. However, the ODK library changed, so we rolled the minor version number to 3. The ODK library was updated to support a nonce-free offline license. An offline license would not require a nonce if, for example, it is preloaded onto the device and does not have an entry in the usage table. Also, the following unit tests have been updated: 1. Various tests: Keys are not derived if they are not used. This is more in line with the “OEMCrypto state” diagram below. 2. The decrypt hash is not verified when there are multiple samples or no key is selected. 3. LoadKeyWithNoRequest. A nonce-free license is loaded in a session that did not sign the request. (Requires 16.3 ODK library) 4. RefreshLargeBuffer. The renewal message was set to the large size. Previously, only the license request was set to the larger size. 5. OEMCryptoGenericCryptoTest.*LargeBuffer. The correct buffer size is now being used. 6. ShrinkOverOpenSessions: The correct error code OEMCrypto_ERROR_ENTRY_IN_USE is now verified. 7. TimeRollbackPrevention: The test was refactored and fixed. Comments were added.
This is the OEMCrypto git repository. It is visible to Widevine partners, and contains documentation for OEMCrypto, as well as unit tests and reference code. Several versions of OEMCrypto are available on different branches. This is the only file on the master branch. Please use the git checkout command to work with the correct version of OEMCrypto, for example, to see version 14, use the command "git checkout origin/v14". Use "git branch -a" to see a list of all branches. Contact your Widevine TAM if you are unsure which branch you should use. The latest branch might have documentation without complete unit tests or sample code.