diff --git a/tv/tuner/aidl/vts/OWNERS b/tv/tuner/aidl/vts/OWNERS
index bf2b609..5b33bf2 100644
--- a/tv/tuner/aidl/vts/OWNERS
+++ b/tv/tuner/aidl/vts/OWNERS
@@ -1,3 +1,5 @@
+# Bug component: 136752
+
 hgchen@google.com
 shubang@google.com
 quxiangfang@google.com
diff --git a/tv/tuner/aidl/vts/functional/Android.bp b/tv/tuner/aidl/vts/functional/Android.bp
index e5fb1e6..5f04293 100644
--- a/tv/tuner/aidl/vts/functional/Android.bp
+++ b/tv/tuner/aidl/vts/functional/Android.bp
@@ -51,6 +51,7 @@
         "android.hardware.cas@1.0",
         "android.hardware.cas@1.1",
         "android.hardware.cas@1.2",
+        "android.hardware.cas-V1-ndk",
         "android.hardware.common-V2-ndk",
         "android.hardware.common.fmq-V1-ndk",
         "android.hardware.tv.tuner-V1-ndk",
diff --git a/tv/tuner/aidl/vts/functional/DescramblerTests.cpp b/tv/tuner/aidl/vts/functional/DescramblerTests.cpp
index 157fa04..f4855c2 100644
--- a/tv/tuner/aidl/vts/functional/DescramblerTests.cpp
+++ b/tv/tuner/aidl/vts/functional/DescramblerTests.cpp
@@ -19,71 +19,115 @@
 using namespace std;
 
 AssertionResult DescramblerTests::createCasPlugin(int32_t caSystemId) {
-    auto status = mMediaCasService->isSystemIdSupported(caSystemId);
-    if (!status.isOk() || !status) {
-        ALOGW("[vts] Failed to check isSystemIdSupported.");
-        return failure();
+    mCasListener = ::ndk::SharedRefBase::make<MediaCasListener>();
+
+    if (mMediaCasServiceAidl != nullptr) {
+        bool rst = false;
+        ScopedAStatus status = mMediaCasServiceAidl->isSystemIdSupported(caSystemId, &rst);
+        if (!status.isOk() || !rst) {
+            ALOGW("[vts] Failed to check isSystemIdSupported for AIDL service.");
+            return failure();
+        }
+        status = mMediaCasServiceAidl->createPlugin(caSystemId, mCasListener, &mCasAidl);
+        if (!status.isOk()) {
+            ALOGW("[vts] Failed to createPlugin for AIDL service.");
+            return failure();
+        }
+    } else {
+        auto status = mMediaCasServiceHidl->isSystemIdSupported(caSystemId);
+        if (!status.isOk() || !status) {
+            ALOGW("[vts] Failed to check isSystemIdSupported for HIDL service.");
+            return failure();
+        }
+        auto pluginStatus = mMediaCasServiceHidl->createPluginExt(
+                caSystemId, sp<ICasListenerHidl>(mCasListener.get()));
+        if (!pluginStatus.isOk()) {
+            ALOGW("[vts] Failed to createPluginExt for HIDL service.");
+            return failure();
+        }
+        mCasHidl = ICasHidl::castFrom(pluginStatus);
+        if (mCasHidl == nullptr) {
+            ALOGW("[vts] Failed to get ICas for HIDL service.");
+            return failure();
+        }
     }
 
-    mCasListener = new MediaCasListener();
-    auto pluginStatus = mMediaCasService->createPluginExt(caSystemId, mCasListener);
-    if (!pluginStatus.isOk()) {
-        ALOGW("[vts] Failed to createPluginExt.");
-        return failure();
-    }
-    mCas = ICas::castFrom(pluginStatus);
-    if (mCas == nullptr) {
-        ALOGW("[vts] Failed to get ICas.");
-        return failure();
-    }
     return success();
 }
 
 AssertionResult DescramblerTests::openCasSession(vector<uint8_t>& sessionId,
-                                                 vector<uint8_t>& hidlPvtData) {
-    Status sessionStatus;
-    SessionIntent intent = SessionIntent::LIVE;
-    ScramblingMode mode = ScramblingMode::RESERVED;
-    auto returnVoid =
-            mCas->openSession_1_2(intent, mode, [&](Status status, const hidl_vec<uint8_t>& id) {
-                sessionStatus = status;
-                sessionId = id;
-            });
-    if (!returnVoid.isOk() || (sessionStatus != Status::OK)) {
-        ALOGW("[vts] Failed to open cas session.");
-        mCas->closeSession(sessionId);
-        return failure();
-    }
-
-    if (hidlPvtData.size() > 0) {
-        auto status = mCas->setSessionPrivateData(sessionId, hidlPvtData);
-        if (status != android::hardware::cas::V1_0::Status::OK) {
-            ALOGW("[vts] Failed to set session private data");
-            mCas->closeSession(sessionId);
+                                                 vector<uint8_t>& pvtData) {
+    if (mMediaCasServiceAidl != nullptr) {
+        SessionIntentAidl intent = SessionIntentAidl::LIVE;
+        ScramblingModeAidl mode = ScramblingModeAidl::RESERVED;
+        std::vector<uint8_t> sessionId;
+        ScopedAStatus status = mCasAidl->openSession(intent, mode, &sessionId);
+        if (!status.isOk()) {
+            ALOGW("[vts] Failed to open cas session for AIDL service.");
+            mCasAidl->closeSession(sessionId);
             return failure();
         }
+
+        if (pvtData.size() > 0) {
+            ScopedAStatus status = mCasAidl->setSessionPrivateData(sessionId, pvtData);
+            if (!status.isOk()) {
+                ALOGW("[vts] Failed to set session private data for AIDL service.");
+                mCasAidl->closeSession(sessionId);
+                return failure();
+            }
+        }
+    } else {
+        Status sessionStatus;
+        SessionIntentHidl intent = SessionIntentHidl::LIVE;
+        ScramblingModeHidl mode = ScramblingModeHidl::RESERVED;
+        auto returnVoid = mCasHidl->openSession_1_2(
+                intent, mode, [&](Status status, const hidl_vec<uint8_t>& id) {
+                    sessionStatus = status;
+                    sessionId = id;
+                });
+        if (!returnVoid.isOk() || (sessionStatus != Status::OK)) {
+            ALOGW("[vts] Failed to open cas session for HIDL service.");
+            mCasHidl->closeSession(sessionId);
+            return failure();
+        }
+
+        if (pvtData.size() > 0) {
+            auto status = mCasHidl->setSessionPrivateData(sessionId, pvtData);
+            if (status != android::hardware::cas::V1_0::Status::OK) {
+                ALOGW("[vts] Failed to set session private data for HIDL service.");
+                mCasHidl->closeSession(sessionId);
+                return failure();
+            }
+        }
     }
 
     return success();
 }
 
 AssertionResult DescramblerTests::getKeyToken(int32_t caSystemId, string& provisonStr,
-                                              vector<uint8_t>& hidlPvtData,
-                                              vector<uint8_t>& token) {
+                                              vector<uint8_t>& pvtData, vector<uint8_t>& token) {
     if (createCasPlugin(caSystemId) != success()) {
         ALOGW("[vts] createCasPlugin failed.");
         return failure();
     }
 
     if (provisonStr.size() > 0) {
-        auto returnStatus = mCas->provision(hidl_string(provisonStr));
-        if (returnStatus != android::hardware::cas::V1_0::Status::OK) {
-            ALOGW("[vts] provision failed.");
-            return failure();
+        if (mMediaCasServiceAidl != nullptr) {
+            ScopedAStatus status = mCasAidl->provision(provisonStr);
+            if (!status.isOk()) {
+                ALOGW("[vts] provision failed for AIDL service.");
+                return failure();
+            }
+        } else {
+            auto returnStatus = mCasHidl->provision(hidl_string(provisonStr));
+            if (returnStatus != android::hardware::cas::V1_0::Status::OK) {
+                ALOGW("[vts] provision failed for HIDL service.");
+                return failure();
+            }
         }
     }
 
-    return openCasSession(token, hidlPvtData);
+    return openCasSession(token, pvtData);
 }
 
 AssertionResult DescramblerTests::openDescrambler(int32_t demuxId) {
diff --git a/tv/tuner/aidl/vts/functional/DescramblerTests.h b/tv/tuner/aidl/vts/functional/DescramblerTests.h
index f0b7691..bab1a88 100644
--- a/tv/tuner/aidl/vts/functional/DescramblerTests.h
+++ b/tv/tuner/aidl/vts/functional/DescramblerTests.h
@@ -30,11 +30,17 @@
 #include <android/hardware/cas/1.2/IMediaCasService.h>
 #include <android/hardware/cas/1.2/types.h>
 
+#include <aidl/android/hardware/cas/BnCasListener.h>
+#include <aidl/android/hardware/cas/ICas.h>
+#include <aidl/android/hardware/cas/IMediaCasService.h>
+#include <aidl/android/hardware/cas/ScramblingMode.h>
+#include <aidl/android/hardware/cas/SessionIntent.h>
 #include <aidl/android/hardware/tv/tuner/IDescrambler.h>
 #include <aidl/android/hardware/tv/tuner/IDvr.h>
 #include <aidl/android/hardware/tv/tuner/IDvrCallback.h>
 #include <aidl/android/hardware/tv/tuner/ITuner.h>
 
+using ::aidl::android::hardware::cas::BnCasListener;
 using android::Condition;
 using android::Mutex;
 using android::sp;
@@ -42,19 +48,26 @@
 using android::hardware::hidl_vec;
 using android::hardware::Return;
 using android::hardware::Void;
-using android::hardware::cas::V1_2::ICas;
-using android::hardware::cas::V1_2::ICasListener;
-using android::hardware::cas::V1_2::IMediaCasService;
-using android::hardware::cas::V1_2::ScramblingMode;
-using android::hardware::cas::V1_2::SessionIntent;
 using android::hardware::cas::V1_2::Status;
 using android::hardware::cas::V1_2::StatusEvent;
+using ICasAidl = ::aidl::android::hardware::cas::ICas;
+using ICasHidl = android::hardware::cas::V1_2::ICas;
+using ICasListenerHidl = android::hardware::cas::V1_2::ICasListener;
+using IMediaCasServiceAidl = ::aidl::android::hardware::cas::IMediaCasService;
+using IMediaCasServiceHidl = android::hardware::cas::V1_2::IMediaCasService;
+using ScramblingModeAidl = ::aidl::android::hardware::cas::ScramblingMode;
+using ScramblingModeHidl = android::hardware::cas::V1_2::ScramblingMode;
+using SessionIntentAidl = ::aidl::android::hardware::cas::SessionIntent;
+using SessionIntentHidl = android::hardware::cas::V1_2::SessionIntent;
 
+using ::ndk::ScopedAStatus;
 using ::testing::AssertionResult;
 
 using namespace aidl::android::hardware::tv::tuner;
 
-class MediaCasListener : public ICasListener {
+const std::string MEDIA_CAS_AIDL_SERVICE_NAME = "android.hardware.cas.IMediaCasService/default";
+
+class MediaCasListener : public ICasListenerHidl, public BnCasListener {
   public:
     virtual Return<void> onEvent(int32_t /*event*/, int32_t /*arg*/,
                                  const hidl_vec<uint8_t>& /*data*/) override {
@@ -70,12 +83,33 @@
     virtual Return<void> onStatusUpdate(StatusEvent /*event*/, int32_t /*arg*/) override {
         return Void();
     }
+
+    ScopedAStatus onEvent(int32_t /*in_event*/, int32_t /*in_arg*/,
+                          const std::vector<uint8_t>& /*in_data*/) override {
+        return ScopedAStatus::ok();
+    }
+
+    ScopedAStatus onSessionEvent(const std::vector<uint8_t>& /*in_sessionId*/, int32_t /*in_event*/,
+                                 int32_t /*in_arg*/,
+                                 const std::vector<uint8_t>& /*in_data*/) override {
+        return ScopedAStatus::ok();
+    }
+
+    ScopedAStatus onStatusUpdate(::aidl::android::hardware::cas::StatusEvent /*in_event*/,
+                                 int32_t /*in_number*/) override {
+        return ScopedAStatus::ok();
+    }
 };
 
 class DescramblerTests {
   public:
     void setService(std::shared_ptr<ITuner> tuner) { mService = tuner; }
-    void setCasService(sp<IMediaCasService> casService) { mMediaCasService = casService; }
+    void setCasServiceHidl(sp<IMediaCasServiceHidl> casService) {
+        mMediaCasServiceHidl = casService;
+    }
+    void setCasServiceAidl(std::shared_ptr<IMediaCasServiceAidl> casService) {
+        mMediaCasServiceAidl = casService;
+    }
 
     AssertionResult setKeyToken(std::vector<uint8_t>& token);
     AssertionResult openDescrambler(int32_t demuxId);
@@ -95,12 +129,13 @@
 
     std::shared_ptr<ITuner> mService;
     std::shared_ptr<IDescrambler> mDescrambler;
-    android::sp<ICas> mCas;
-    android::sp<IMediaCasService> mMediaCasService;
-    android::sp<MediaCasListener> mCasListener;
+    std::shared_ptr<ICasAidl> mCasAidl;
+    android::sp<ICasHidl> mCasHidl;
+    std::shared_ptr<IMediaCasServiceAidl> mMediaCasServiceAidl;
+    android::sp<IMediaCasServiceHidl> mMediaCasServiceHidl;
+    std::shared_ptr<MediaCasListener> mCasListener;
 
   private:
-    AssertionResult openCasSession(std::vector<uint8_t>& sessionId,
-                                   std::vector<uint8_t>& hidlPvtData);
+    AssertionResult openCasSession(std::vector<uint8_t>& sessionId, std::vector<uint8_t>& pvtData);
     AssertionResult createCasPlugin(int32_t caSystemId);
 };
diff --git a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.h b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.h
index 7f80d90..73dc797 100644
--- a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.h
+++ b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.h
@@ -338,16 +338,31 @@
         } else {
             mService = nullptr;
         }
-        mCasService = IMediaCasService::getService();
         ASSERT_NE(mService, nullptr);
-        ASSERT_NE(mCasService, nullptr);
+
+        // Get IMediaCasService. Try getting AIDL service first, if AIDL does not exist, try HIDL.
+        if (AServiceManager_isDeclared(MEDIA_CAS_AIDL_SERVICE_NAME.c_str())) {
+            ::ndk::SpAIBinder binder(
+                    AServiceManager_waitForService(MEDIA_CAS_AIDL_SERVICE_NAME.c_str()));
+            mCasServiceAidl = IMediaCasServiceAidl::fromBinder(binder);
+        } else {
+            mCasServiceAidl = nullptr;
+        }
+        if (mCasServiceAidl == nullptr) {
+            mCasServiceHidl = IMediaCasServiceHidl::getService();
+        }
+        ASSERT_TRUE(mCasServiceAidl != nullptr || mCasServiceHidl != nullptr);
         ASSERT_TRUE(initConfiguration());
 
         mFrontendTests.setService(mService);
         mDemuxTests.setService(mService);
         mDvrTests.setService(mService);
         mDescramblerTests.setService(mService);
-        mDescramblerTests.setCasService(mCasService);
+        if (mCasServiceAidl != nullptr) {
+            mDescramblerTests.setCasServiceAidl(mCasServiceAidl);
+        } else {
+            mDescramblerTests.setCasServiceHidl(mCasServiceHidl);
+        }
     }
 
   protected:
@@ -360,7 +375,8 @@
     AssertionResult filterDataOutputTest();
 
     std::shared_ptr<ITuner> mService;
-    android::sp<IMediaCasService> mCasService;
+    sp<IMediaCasServiceHidl> mCasServiceHidl;
+    std::shared_ptr<IMediaCasServiceAidl> mCasServiceAidl;
     FrontendTests mFrontendTests;
     DemuxTests mDemuxTests;
     FilterTests mFilterTests;