Files
android/libwvdrmengine
Srujan Gaddam 3e5ade22f9 Handle not setting length in getUniqueID
Test: oc-mr1-release to q upgrade with L3 offline licenses, pi-dev to q
upgrade with L3 offline licenses, CE CDM tests, Android unit/integration
tests, Linux tests
Bug: b/112611429
Merge of http://go/wvgerrit/77111

The Level 3 uses the getUniqueID method to uniquely identify devices to
save device keys. This method needs to be consistent and as part of the
method, the length is set. In previous versions, this length isn't set,
but starting from Pi, it is. What this means is that decryption of the
device keys fails, and therefore offline licenses are lost. As a
workaround, we attempt to decrypt the device keys with the length
parameter and with the default if we failed to decrypt. Since the
generation number is also encrypted by the unique id, in the case where
we succeed in decrypting with the default, we reencrypt the generation
number so it can be read in when we handle the usage table. Finally, we
reencrypt everything with the correct length unique id.

Change-Id: Id682771c3921dea35592914fc7a1aaa92fa6737a
2019-04-22 12:11:39 -07:00
..
2019-03-03 21:16:55 -08:00
2018-04-16 16:38:05 -07:00
2019-02-01 19:32:43 +00:00
2018-11-22 00:33:30 +00:00

This is the source code for the Widevine Content Decryption Module (CDM) for the
Android OS.  It provides the libwvdrmengine plugin for DRM.

Partners who are integrating a device should be familiar with the documents in
the docs directory.

This source code is NOT open source, and is not part of AOSP.  However, it is
released to partners external to Google after official Android releases.  For
this reason, partners should look for bug fixes and software updates on the
widevine branches:

+------------------------------+------------------------------+
|Android Version               |Branch                        |
+------------------------------+------------------------------+
|Android L                     |lmp-mr1-widevine-release      |
+------------------------------+------------------------------+
|Android M MR1                 |mnc-mr1-widevine-release      |
+------------------------------+------------------------------+
|Android N MR2                 |nyc-mr2-widevine-release      |
+------------------------------+------------------------------+
|Android OC                    |oc-widevine-release           |
+------------------------------+------------------------------+
|Android OC MR1                |oc-mr1-widevine-release       |
+------------------------------+------------------------------+
|Android Pi                    |pi-widevine-release           |
+------------------------------+------------------------------+