widevine-partner/android
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

OEMCrypto v16.2

Browse Source 
Merge from Widevine repo of http://go/wvgerrit/93404

This is the unit tests, reference code, and documentation for
OEMCrypto v16.2. Backwards compatibility should work for a v15
OEMCrypto.

Some review comments will be addressed in future CLs.

Bug: 141247171
Test: Unit tests
Test: Media GTS tests on bonito
Change-Id: I9d427c07580e180c0a4cfdc4a68f538d351c0ddd
This commit is contained in:
Fred Gylys-Colwell
2020-01-18 10:18:50 -08:00
parent 7665614b2e
commit db2050dff1
62 changed files with 2947 additions and 2286 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
libwvdrmengine/oemcrypto/ref/src/oemcrypto_engine_ref.h
View File

@@ -29,10 +29,23 @@ namespace wvoec_ref {
typedef std::map<SessionId, SessionContext*> ActiveSessions;
static const std::string kStoredUsageTimeFileName = "StoredUsageTime.dat";
typedef struct {
// The max time recorded
int64_t previous_time;
// If the wall time is rollbacked to before the previous_time, this member
// is updated to reflect the offset.
int64_t rollback_offset;
// Pad the struct so that TimeInfo is a multiple of 16.
uint8_t padding[16 - (2 * sizeof(time_t)) % 16];
} TimeInfo;
class CryptoEngine {
public:
static const uint32_t kApiVersion = 16;
static const uint32_t kMinorApiVersion = 0;
static const int64_t kTimeInfoUpdateWindowInSeconds = 300;
// This is like a factory method, except we choose which version to use at
// compile time. It is defined in several source files. The build system
@@ -217,6 +230,10 @@ class CryptoEngine {
// System clock with antirollback protection, measuring time in seconds.
int64_t RollbackCorrectedOfflineTime();
bool LoadOfflineTimeInfo(const std::string& file_path);
bool SaveOfflineTimeInfo(const std::string& file_path);
std::string GetUsageTimeFileFullPath() const;
explicit CryptoEngine(std::unique_ptr<wvcdm::FileSystem>&& file_system);
virtual SessionContext* MakeSession(SessionId sid);
virtual UsageTable* MakeUsageTable();
@@ -226,6 +243,7 @@ class CryptoEngine {
std::mutex session_table_lock_;
std::unique_ptr<wvcdm::FileSystem> file_system_;
std::unique_ptr<UsageTable> usage_table_;
TimeInfo offline_time_info_;
CORE_DISALLOW_COPY_AND_ASSIGN(CryptoEngine);
};