diff --git a/wifi/supplicant/1.2/Android.bp b/wifi/supplicant/1.2/Android.bp
index bafd148313..93ce573701 100644
--- a/wifi/supplicant/1.2/Android.bp
+++ b/wifi/supplicant/1.2/Android.bp
@@ -7,6 +7,8 @@ hidl_interface {
         enabled: true,
     },
     srcs: [
+        "ISupplicant.hal",
+        "ISupplicantStaIface.hal",
         "ISupplicantStaNetwork.hal",
     ],
     interfaces: [
diff --git a/wifi/supplicant/1.2/ISupplicant.hal b/wifi/supplicant/1.2/ISupplicant.hal
new file mode 100644
index 0000000000..b0ec65db53
--- /dev/null
+++ b/wifi/supplicant/1.2/ISupplicant.hal
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2018 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@1.2;
+
+import @1.1::ISupplicant;
+
+/**
+ * Interface exposed by the supplicant HIDL service registered
+ * with the hardware service manager.
+ * This is the root level object for any the supplicant interactions.
+ * To use 1.2 features you must cast specific interfaces returned from the
+ * 1.1 HAL. For example V1_1::ISupplicant::addIface() adds V1_1::ISupplicantIface,
+ * which can be cast to V1_2::ISupplicantStaIface.
+ */
+interface ISupplicant extends @1.1::ISupplicant {
+};
diff --git a/wifi/supplicant/1.2/ISupplicantStaIface.hal b/wifi/supplicant/1.2/ISupplicantStaIface.hal
new file mode 100644
index 0000000000..a338c6a2c2
--- /dev/null
+++ b/wifi/supplicant/1.2/ISupplicantStaIface.hal
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018 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@1.2;
+
+import @1.0::SupplicantStatus;
+import @1.1::ISupplicantStaIface;
+import @1.2::ISupplicantStaNetwork;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * interface (e.g wlan0) it controls.
+ */
+interface ISupplicantStaIface extends @1.1::ISupplicantStaIface {
+
+    /**
+     * Get Key management capabilities of the device
+     *
+     * @return status Status of the operation, and a bitmap of key management mask.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    getKeyMgmtCapabilities()
+        generates (SupplicantStatus status, bitfield<KeyMgmtMask> keyMgmtMask);
+};
+
diff --git a/wifi/supplicant/1.2/ISupplicantStaNetwork.hal b/wifi/supplicant/1.2/ISupplicantStaNetwork.hal
index 85b233d685..6fd0d51694 100644
--- a/wifi/supplicant/1.2/ISupplicantStaNetwork.hal
+++ b/wifi/supplicant/1.2/ISupplicantStaNetwork.hal
@@ -256,17 +256,4 @@ interface ISupplicantStaNetwork extends @1.1::ISupplicantStaNetwork {
      */
     setSaePasswordId(string saePasswordId)
         generates (SupplicantStatus status);
-
-    /**
-     * Get Key management capabilities of the device
-     *
-     * @return status Status of the operation, and a string.
-     *         Possible status codes:
-     *         |SupplicantStatusCode.SUCCESS|,
-     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
-     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
-     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
-     */
-    getKeyMgmtCapabilities()
-        generates (SupplicantStatus status, bitfield<KeyMgmtMask> keyMgmtMask);
 };