[RESTRICT AUTOMERGE] L3 Load RSA key from two parts and re-generate

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This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124623

The source code change that produced the obfucated code is also included
in the CL above but will not be merged to Android.

Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.

This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"

New L3 system IDs included in the obfuscated code:
22589  Android R ARM L3 Field Provisioning 3.0
22590  Android R ARM 64 L3 Field Provisioning 3.0
22591  Android R x86 L3 Field Provisioning 3.0
22592  Android R x86 64 L3 Field Provisioning 3.0

Bug: 182584472
Test: L3 unit tests
Test: GTS tests
run gts --module GtsMediaTestCases
run gts --module GtsExoPlayerTestCases
run gts --module GtsYouTubeTestCases

Change-Id: Ie61f39f50a70ab75547d75f89d9e38264f598bc8

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This commit is contained in:

Cong Lin

2021-05-18 15:19:10 -07:00

parent 9fbcb7f1ba

commit e4cfcab140

4 changed files with 281609 additions and 279974 deletions

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libwvdrmengine/level3/arm/libl3oemcrypto.cpp

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libwvdrmengine/level3/arm64/libl3oemcrypto.cpp

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libwvdrmengine/level3/x86/libl3oemcrypto.cpp

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libwvdrmengine/level3/x86_64/libl3oemcrypto.cpp

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