diff --git a/wifi/supplicant/1.3/Android.bp b/wifi/supplicant/1.3/Android.bp
index 6633d9d..3f20531 100644
--- a/wifi/supplicant/1.3/Android.bp
+++ b/wifi/supplicant/1.3/Android.bp
@@ -9,6 +9,8 @@
     srcs: [
         "types.hal",
         "ISupplicant.hal",
+        "ISupplicantStaIface.hal",
+        "ISupplicantStaIfaceCallback.hal",
         "ISupplicantStaNetwork.hal",
     ],
     interfaces: [
diff --git a/wifi/supplicant/1.3/ISupplicantStaIface.hal b/wifi/supplicant/1.3/ISupplicantStaIface.hal
new file mode 100644
index 0000000..62b4033
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIface.hal
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.0::SupplicantStatus;
+import @1.2::ISupplicantStaIface;
+import @1.3::ISupplicantStaIfaceCallback;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * interface (e.g wlan0) it controls.
+ */
+interface ISupplicantStaIface extends @1.2::ISupplicantStaIface {
+    /**
+     * Register for callbacks from this interface.
+     *
+     * These callbacks are invoked for events that are specific to this interface.
+     * Registration of multiple callback objects is supported. These objects must
+     * be automatically deleted when the corresponding client process is dead or
+     * if this interface is removed.
+     *
+     * @param callback An instance of the |ISupplicantStaIfaceCallback| HIDL
+     *        interface object.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
+     */
+    registerCallback_1_3(ISupplicantStaIfaceCallback callback)
+        generates (SupplicantStatus status);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
new file mode 100644
index 0000000..107e0fc
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::ISupplicantStaIfaceCallback;
+
+/**
+ * Callback Interface exposed by the supplicant service
+ * for each station mode interface (ISupplicantStaIface).
+ *
+ * Clients need to host an instance of this HIDL interface object and
+ * pass a reference of the object to the supplicant via the
+ * corresponding |ISupplicantStaIface.registerCallback_1_3| method.
+ */
+interface ISupplicantStaIfaceCallback extends @1.2::ISupplicantStaIfaceCallback {
+    /**
+     * Indicates PMK cache added event.
+     *
+     * @param expirationTimeInSec expiration time in seconds
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     */
+    oneway onPmkCacheAdded(int64_t expirationTimeInSec, vec<uint8_t> serializedEntry);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaNetwork.hal b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
index eb9de9a..5e265c6 100644
--- a/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
+++ b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
@@ -47,4 +47,19 @@
      * @return ocspType ocsp type.
      */
     getOcsp() generates (SupplicantStatus status, OcspType ocspType);
+
+    /**
+     * Add a PMK into supplicant PMK cache.
+     *
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     * @return status Status of the operation
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setPmkCache(vec<uint8_t> serializedEntry)
+        generates (SupplicantStatus status);
 };
diff --git a/wifi/supplicant/1.3/vts/functional/Android.bp b/wifi/supplicant/1.3/vts/functional/Android.bp
index 67c7348..abb8600 100644
--- a/wifi/supplicant/1.3/vts/functional/Android.bp
+++ b/wifi/supplicant/1.3/vts/functional/Android.bp
@@ -42,6 +42,7 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalWifiSupplicantV1_3TargetTest.cpp",
+        "supplicant_sta_iface_hidl_test.cpp",
         "supplicant_sta_network_hidl_test.cpp",
     ],
     static_libs: [
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
index 86959eb..308808d 100644
--- a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
@@ -21,8 +21,13 @@
 #include "supplicant_hidl_test_utils_1_3.h"
 
 using ::android::sp;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
 using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
 
+sp<ISupplicantStaIface> getSupplicantStaIface_1_3() {
+    return ISupplicantStaIface::castFrom(getSupplicantStaIface());
+}
+
 sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_3() {
     return ISupplicantStaNetwork::castFrom(createSupplicantStaNetwork());
 }
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
index 8e64162..39dbb8f 100644
--- a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
@@ -17,8 +17,11 @@
 #ifndef SUPPLICANT_HIDL_TEST_UTILS_1_3_H
 #define SUPPLICANT_HIDL_TEST_UTILS_1_3_H
 
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
 #include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
 
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface>
+getSupplicantStaIface_1_3();
 android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork>
 createSupplicantStaNetwork_1_3();
 
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
new file mode 100644
index 0000000..9b68a47
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/wifi/supplicant/1.2/types.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+#include <android/hardware/wifi/supplicant/1.3/types.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/Status.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppAkm;
+using ::android::hardware::wifi::supplicant::V1_2::DppFailureCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppProgressCode;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIfaceCallback;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+
+class SupplicantStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    virtual void SetUp() override {
+        startSupplicantAndWaitForHidlService();
+        EXPECT_TRUE(turnOnExcessiveLogging());
+        sta_iface_ = getSupplicantStaIface_1_3();
+        ASSERT_NE(sta_iface_.get(), nullptr);
+    }
+
+    virtual void TearDown() override { stopSupplicant(); }
+
+    int64_t pmkCacheExpirationTimeInSec;
+    std::vector<uint8_t> serializedPmkCacheEntry;
+
+   protected:
+    // ISupplicantStaIface object used for all tests in this fixture.
+    sp<ISupplicantStaIface> sta_iface_;
+};
+
+class IfaceCallback : public ISupplicantStaIfaceCallback {
+    Return<void> onNetworkAdded(uint32_t /* id */) override { return Void(); }
+    Return<void> onNetworkRemoved(uint32_t /* id */) override { return Void(); }
+    Return<void> onStateChanged(
+        ISupplicantStaIfaceCallback::State /* newState */,
+        const hidl_array<uint8_t, 6>& /*bssid */, uint32_t /* id */,
+        const hidl_vec<uint8_t>& /* ssid */) override {
+        return Void();
+    }
+    Return<void> onAnqpQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const ISupplicantStaIfaceCallback::AnqpData& /* data */,
+        const ISupplicantStaIfaceCallback::Hs20AnqpData& /* hs20Data */)
+        override {
+        return Void();
+    }
+    virtual Return<void> onHs20IconQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const hidl_string& /* fileName */,
+        const hidl_vec<uint8_t>& /* data */) override {
+        return Void();
+    }
+    virtual Return<void> onHs20SubscriptionRemediation(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::OsuMethod /* osuMethod */,
+        const hidl_string& /* url*/) override {
+        return Void();
+    }
+    Return<void> onHs20DeauthImminentNotice(
+        const hidl_array<uint8_t, 6>& /* bssid */, uint32_t /* reasonCode */,
+        uint32_t /* reAuthDelayInSec */,
+        const hidl_string& /* url */) override {
+        return Void();
+    }
+    Return<void> onDisconnected(const hidl_array<uint8_t, 6>& /* bssid */,
+                                bool /* locallyGenerated */,
+                                ISupplicantStaIfaceCallback::ReasonCode
+                                /* reasonCode */) override {
+        return Void();
+    }
+    Return<void> onAssociationRejected(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::StatusCode /* statusCode */,
+        bool /*timedOut */) override {
+        return Void();
+    }
+    Return<void> onAuthenticationTimeout(
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onBssidChanged(
+        ISupplicantStaIfaceCallback::BssidChangeReason /* reason */,
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onEapFailure() override { return Void(); }
+    Return<void> onEapFailure_1_1(
+        ISupplicantStaIfaceCallback::EapErrorCode /* eapErrorCode */) override {
+        return Void();
+    }
+    Return<void> onWpsEventSuccess() override { return Void(); }
+    Return<void> onWpsEventFail(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::WpsConfigError /* configError */,
+        ISupplicantStaIfaceCallback::WpsErrorIndication /* errorInd */)
+        override {
+        return Void();
+    }
+    Return<void> onWpsEventPbcOverlap() override { return Void(); }
+    Return<void> onExtRadioWorkStart(uint32_t /* id */) override {
+        return Void();
+    }
+    Return<void> onExtRadioWorkTimeout(uint32_t /* id*/) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigReceived(
+        const hidl_vec<uint8_t>& /* ssid */, const hidl_string& /* password */,
+        const hidl_array<uint8_t, 32>& /* psk */,
+        DppAkm /* securityAkm */) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigSent() override { return Void(); }
+    Return<void> onDppProgress(DppProgressCode /* code */) override {
+        return Void();
+    }
+    Return<void> onDppFailure(DppFailureCode /* code */) override {
+        return Void();
+    }
+    Return<void> onPmkCacheAdded(
+        int64_t /* expirationTimeInSec */,
+        const hidl_vec<uint8_t>& /* serializedEntry */) override {
+        return Void();
+    }
+};
+
+class IfacePmkCacheCallback : public IfaceCallback {
+    SupplicantStaIfaceHidlTest& parent_;
+    Return<void> onPmkCacheAdded(
+        int64_t expirationTimeInSec,
+        const hidl_vec<uint8_t>& serializedEntry) override {
+        parent_.pmkCacheExpirationTimeInSec = expirationTimeInSec;
+        parent_.serializedPmkCacheEntry = serializedEntry;
+        return Void();
+    }
+
+   public:
+    IfacePmkCacheCallback(SupplicantStaIfaceHidlTest& parent)
+        : parent_(parent) {}
+};
+
+/*
+ * RegisterCallback_1_3
+ */
+TEST_F(SupplicantStaIfaceHidlTest, RegisterCallback_1_3) {
+    sta_iface_->registerCallback_1_3(
+        new IfaceCallback(), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
index e5be0cc..07bc9d8 100644
--- a/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
@@ -71,3 +71,16 @@
             EXPECT_EQ(testOcspType, ocspType);
         });
 }
+
+/*
+ * SetPmkCacheEntry
+ */
+TEST_F(SupplicantStaNetworkHidlTest, SetPmkCache) {
+    uint8_t bytes[128] = {0};
+    std::vector<uint8_t> serializedEntry(bytes, bytes + sizeof(bytes));
+
+    sta_network_->setPmkCache(
+        serializedEntry, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}