Merge of https://widevine-internal-review.git.corp.google.com/c/cdm/+/206431
Message to be signed by CAST funciton is supposed to be in a certain
format: "constant prefix + SHA1(message)".
Some of our current CAST tests uses random message which break this
specification. This fixes the input message.
Test: Cast tests with run_fake_l1_tests
Bug: 359893908
Change-Id: I6b318d749971d837f13daa7b147313e8e0b1d3d0
Since KDF functions are only used right before specific functions, this
merges them to simplify internal state within OEMCrypto.
Fixes: 299527712
Change-Id: I426cfcdc102bd73cf65cd809b213da2474f44b34
The unit test helper function LoadWithAllowedSchemes should
only be used to load a Cast Certificate. So it has been
renamed to make that clear.
The only unit test that used the old function with the
non-cast padding scheme has been removed. A replacement will
be added in the next CL of the chain.
Change-Id: Id4aa2f420435baff664324ee4b3dcb74ab9ffe8a
There was some confusion about which tests loaded a cert and
which ones just used a cert. This distinction is important
when testing devices with a baked-in-cert.
Merged from https://widevine-internal-review.googlesource.com/183333
Change-Id: I3c2b119c3355b3a9190799637ff0860b6153b35b
