Add OEMCrypto_IsAntiRollbackHwPresent API for OEMCrypto v10.

Merge from WV CDM repo: https://widevine-internal-review.googlesource.com/#/c/13660/.

bug: 18948905
Change-Id: I1ffe72baaac9abf05c06139de790236e763f89a8

libwvdrmengine/oemcrypto/mock/src/oemcrypto_engine_device_properties.cpp

@@ -33,4 +33,10 @@ bool CryptoEngine::supports_storage() {
   return true;
 }
 
+// Returns false for mock library to indicate the client does not support
+// anti-rollback hardware.
+bool CryptoEngine::is_anti_rollback_hw_present() {
+  return false;
+}
+
 }  // namespace wvoec_mock

libwvdrmengine/oemcrypto/mock/src/oemcrypto_engine_mock.cpp

@@ -512,6 +512,13 @@ bool SessionContext::InstallKey(const KeyId& key_id,
     LOGE("Error parsing key control.");
     return false;
   }
+  if ((key_control_block.control_bits() &
+      kControlRequireAntiRollbackHardware) &&
+      !ce_->is_anti_rollback_hw_present()) {
+    LOGE("Anti-rollback hardware is required but hardware not present.");
+    return false;
+  }
+
   if (!CheckNonceOrEntry(key_control_block, pst)) {
     LOGE("Failed Nonce/PST check.");
     return false;

libwvdrmengine/oemcrypto/mock/src/oemcrypto_engine_mock.h

@@ -256,6 +256,7 @@ class CryptoEngine {
   bool local_display();
   bool closed_platform();
   bool supports_storage();
+  bool is_anti_rollback_hw_present();
 
  private:
   SessionContext* current_session_;

libwvdrmengine/oemcrypto/mock/src/oemcrypto_key_mock.cpp

@@ -19,7 +19,8 @@ namespace wvoec_mock {
 
 bool KeyControlBlock::Validate() {
   if ((FOURCC('k', 'c', 't', 'l') != verification_) &&  // original verification
-      (FOURCC('k', 'c', '0', '9') != verification_)) {  // add in version 9 api.
+      (FOURCC('k', 'c', '0', '9') != verification_) &&  // add in version 9 api
+      (FOURCC('k', 'c', '1', '0') != verification_)) {  // add in version 10 api
     LOGE("KCB: BAD verification string: %08X (not %08X or %08X)", verification_,
          0x6b63746c, 0x6b633039);
     return false;

libwvdrmengine/oemcrypto/mock/src/oemcrypto_key_mock.h

@@ -14,6 +14,7 @@ namespace wvoec_mock {
 const uint32_t kControlObserveDataPath = (1<<31);
 const uint32_t kControlObserveHDCP     = (1<<30);
 const uint32_t kControlObserveCGMS     = (1<<29);
+const uint32_t kControlRequireAntiRollbackHardware = (1<<28);
 const uint32_t kControlReplayMask      = (0x03<<13);
 const uint32_t kControlNonceRequired   = (0x01<<13);
 const uint32_t kControlNonceOrEntry    = (0x02<<13);

libwvdrmengine/oemcrypto/mock/src/oemcrypto_mock.cpp

@@ -996,7 +996,7 @@ OEMCryptoResult OEMCrypto_DeriveKeysFromSessionKey(
 
 extern "C"
 uint32_t OEMCrypto_APIVersion() {
-  return 9;
+  return 10;
 }
 
 extern "C"
@@ -1049,6 +1049,17 @@ OEMCryptoResult OEMCrypto_GetMaxNumberOfSessions(size_t* maximum) {
   return OEMCrypto_SUCCESS;
 }
 
+extern "C"
+bool OEMCrypto_IsAntiRollbackHwPresent() {
+  bool anti_rollback_hw_present = crypto_engine->is_anti_rollback_hw_present();
+
+  if (LogCategoryEnabled(kLoggingTraceOEMCryptoCalls)) {
+    LOGI("-- bool OEMCrypto_IsAntiRollbackHwPresent(): %d\n",
+         anti_rollback_hw_present);
+  }
+  return anti_rollback_hw_present;
+}
+
 extern "C"
 OEMCryptoResult OEMCrypto_Generic_Encrypt(OEMCrypto_SESSION session,
                                           const uint8_t* in_buffer,