Add Cellular Identifier Disclosure Transparency HAL APIs

Exposes new hardware APIs that allow the modem to inform
the OS when personal cellular identifiers are sent in
the clear before NAS security contexts are established. New APIs are:

IRadioNetwork
- isCellularIdentifierTransparencyEnabled
- setCellularIdentifierTransparencyEnabled

IRadioNetworkIndication
- cellularIdentifierDisclosed

Bug: 276752426
Change-Id: I6b1724be4d673e8d4723689a7cb58c9621f72fef
Test: atest VtsHalRadioTargetTest
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifier.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifier.aidl
new file mode 100644
index 0000000..d38494f
--- /dev/null
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifier.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2023 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.radio.network;
+/* @hide */
+@Backing(type="int") @JavaDerive(toString=true) @VintfStability
+enum CellularIdentifier {
+  UNKNOWN = 0,
+  IMSI = 1,
+  IMEI = 2,
+  SUCI = 3,
+}
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifierDisclosure.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifierDisclosure.aidl
new file mode 100644
index 0000000..cb542e8
--- /dev/null
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/CellularIdentifierDisclosure.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2023 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.radio.network;
+/* @hide */
+@JavaDerive(toString=true) @VintfStability
+parcelable CellularIdentifierDisclosure {
+  String plmn;
+  android.hardware.radio.network.CellularIdentifier identifier;
+  android.hardware.radio.network.NasProtocolMessage protocolMessage;
+  boolean isEmergency;
+}
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
index cbc1e30..35badb7 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
@@ -82,4 +82,6 @@
   oneway void isNullCipherAndIntegrityEnabled(in int serial);
   oneway void isN1ModeEnabled(in int serial);
   oneway void setN1ModeEnabled(in int serial, boolean enable);
+  oneway void isCellularIdentifierTransparencyEnabled(in int serial);
+  oneway void setCellularIdentifierTransparencyEnabled(in int serial, in boolean enabled);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
index 05a36ef..77729f3 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -50,4 +50,5 @@
   oneway void suppSvcNotify(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.SuppSvcNotification suppSvc);
   oneway void voiceRadioTechChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.RadioTechnology rat);
   oneway void emergencyNetworkScanResult(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.EmergencyRegResult result);
+  oneway void cellularIdentifierDisclosed(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.CellularIdentifierDisclosure disclosure);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
index c86bebc..91502d0 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
@@ -81,4 +81,6 @@
   oneway void isNullCipherAndIntegrityEnabledResponse(in android.hardware.radio.RadioResponseInfo info, in boolean isEnabled);
   oneway void isN1ModeEnabledResponse(in android.hardware.radio.RadioResponseInfo info, boolean isEnabled);
   oneway void setN1ModeEnabledResponse(in android.hardware.radio.RadioResponseInfo info);
+  oneway void isCellularIdentifierTransparencyEnabledResponse(in android.hardware.radio.RadioResponseInfo info, boolean isEnabled);
+  oneway void setCellularIdentifierTransparencyEnabledResponse(in android.hardware.radio.RadioResponseInfo info);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/NasProtocolMessage.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/NasProtocolMessage.aidl
new file mode 100644
index 0000000..9f852cc
--- /dev/null
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/NasProtocolMessage.aidl
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2023 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.radio.network;
+/* @hide */
+@Backing(type="int") @JavaDerive(toString=true) @VintfStability
+enum NasProtocolMessage {
+  UNKNOWN = 0,
+  ATTACH_REQUEST = 1,
+  IDENTITY_RESPONSE = 2,
+  DETACH_REQUEST = 3,
+  TRACKING_AREA_UPDATE_REQUEST = 4,
+  LOCATION_UPDATE_REQUEST = 5,
+  AUTHENTICATION_AND_CIPHERING_RESPONSE = 6,
+  REGISTRATION_REQUEST = 7,
+  DEREGISTRATION_REQUEST = 8,
+}
diff --git a/radio/aidl/android/hardware/radio/network/CellularIdentifier.aidl b/radio/aidl/android/hardware/radio/network/CellularIdentifier.aidl
new file mode 100644
index 0000000..6d43920
--- /dev/null
+++ b/radio/aidl/android/hardware/radio/network/CellularIdentifier.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2023 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.radio.network;
+
+/** @hide **/
+@VintfStability
+@Backing(type="int")
+@JavaDerive(toString=true)
+enum CellularIdentifier {
+    UNKNOWN = 0,
+    IMSI = 1,
+    IMEI = 2,
+    SUCI = 3,
+}
diff --git a/radio/aidl/android/hardware/radio/network/CellularIdentifierDisclosure.aidl b/radio/aidl/android/hardware/radio/network/CellularIdentifierDisclosure.aidl
new file mode 100644
index 0000000..52b4116
--- /dev/null
+++ b/radio/aidl/android/hardware/radio/network/CellularIdentifierDisclosure.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2023 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.radio.network;
+
+import android.hardware.radio.network.CellularIdentifier;
+import android.hardware.radio.network.NasProtocolMessage;
+
+/**
+ * A single occurrence of a cellular identifier being sent in the clear pre-authentication. See
+ * IRadioNetwork.setCellularIdentifierTransparencyEnabled for more details.
+ *
+ * @hide
+ */
+@JavaDerive(toString=true)
+@VintfStability
+parcelable CellularIdentifierDisclosure {
+    // The PLMN-ID to which the UE transmitted the cellular identifier
+    String plmn;
+    // The type of cellular identifier that was disclosed
+    CellularIdentifier identifier;
+    // The NAS protocol message within which the cellular identifier was transmitted.
+    NasProtocolMessage protocolMessage;
+    // Whether or not this cellular identifier disclosure is in service of an emergency call.
+    boolean isEmergency;
+}
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
index 878ad23..806eed9 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
@@ -557,4 +557,44 @@
      * Response function is IRadioNetworkResponse.setN1ModeEnabledResponse()
      */
     void setN1ModeEnabled(in int serial, boolean enable);
+
+    /**
+     * Get whether pre-auth cellular identifier in-the-clear transparency is enabled. If
+     * IRadioNetworkInterface.setCellularIdentifierTransparencyEnabled has been called, this should
+     * return the value of the `enabled` parameter of the last successful call. If it hasn't been
+     * called this should return the default value of true.
+     *
+     * @param serial Serial number of request
+     *
+     * Response callback is IRadioNetworkResponse.isCellularIdentifierTransparencyEnabledResponse
+     */
+    void isCellularIdentifierTransparencyEnabled(in int serial);
+
+    /**
+     * Enable or disable transparency for in-the-clear cellular identifiers. If the value of enabled
+     * is true, the modem must call IRadioNetworkIndication.cellularIdentifierDisclosed when an
+     * IMSI, IMEI, or unciphered SUCI (in 5G SA) appears in one of the following UE-initiated NAS
+     * messages before a security context is established.
+     *
+     * Note: Cellular identifiers disclosed in uplink messages covered under a NAS Security Context
+     * as well as identifiers disclosed in downlink messages are out of scope.
+     *
+     * This feature applies to 2g, 3g, 4g, and 5g (SA and NSA) messages sent before a NAS security
+     * context is established. In scope message definitions and their associated spec references can
+     * be found in NasProtocolMessage.
+     *
+     * If the value of enabled is false, the modem must not call
+     * IRadioNetworkIndication.sentCellularIdentifierDisclosure again until a subsequent call
+     * re-enables this functionality. The modem may choose to stop tracking cellular identifiers in
+     * the clear during this time.
+     *
+     * Note: The default value of enabled shall be true.
+     *
+     * @param serial Serial number of request
+     * @param enabled Whether or not to enable sending indications for cellular identifiers in the
+     *         clear
+     *
+     * Response function is IRadioNetworkResponse.setCellularIdentifierTransparencyEnabledResponse
+     */
+    void setCellularIdentifierTransparencyEnabled(in int serial, in boolean enabled);
 }
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
index 2c6f4e7..d7b5b3b 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -21,6 +21,7 @@
 import android.hardware.radio.network.BarringInfo;
 import android.hardware.radio.network.CellIdentity;
 import android.hardware.radio.network.CellInfo;
+import android.hardware.radio.network.CellularIdentifierDisclosure;
 import android.hardware.radio.network.EmergencyRegResult;
 import android.hardware.radio.network.LinkCapacityEstimate;
 import android.hardware.radio.network.NetworkScanResult;
@@ -200,4 +201,30 @@
      * @param result the result of the Emergency Network Scan
      */
     void emergencyNetworkScanResult(in RadioIndicationType type, in EmergencyRegResult result);
+
+    /**
+     * Report a cellular identifier disclosure event. See
+     * IRadioNetwork.setCellularIdnetifierTransparencyEnabled for more details.
+     *
+     * A non-exhaustive list of when this method should be called follows:
+     *
+     * - If a device attempts an IMSI attach to the network.
+     * - If a device includes an IMSI in the IDENTITY_RESPONSE message on the NAS and a security context
+     * has not yet been established.
+     * - If a device includes an IMSI in a DETACH_REQUEST message sent on the NAS and the message is
+     * sent before a security context has been established.
+     * - If a device includes an IMSI in a TRACKING_AREA_UPDATE message sent on the NAS and the message
+     * is sent before a security context has been established.
+     * - If a device uses a 2G network to send a LOCATION_UPDATE_REQUEST message on the NAS that
+     * includes an IMSI or IMEI.
+     * - If a device uses a 2G network to send a AUTHENTICATION_AND_CIPHERING_RESPONSE message on the
+     * NAS and the message includes an IMEISV.
+     *
+     * @param type Type of radio indication
+     * @param disclosure A CellularIdentifierDisclosure as specified by
+     *         IRadioNetwork.setCellularIdentifierTransparencyEnabled.
+     *
+     */
+    void cellularIdentifierDisclosed(
+            in RadioIndicationType type, in CellularIdentifierDisclosure disclosure);
 }
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
index 0889832..b8a258a 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
@@ -666,4 +666,31 @@
      *   RadioError:INVALID_STATE
      */
     void setN1ModeEnabledResponse(in RadioResponseInfo info);
+
+    /**
+     * Response of isCellularIdentifierTransparencyEnabled.
+     *
+     * @param info Response info struct containing response type, serial no. and error.
+     * @param isEnabled Indicates whether cellular identifier transparency is enabled or not.
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INTERNAL_ERR
+     */
+    void isCellularIdentifierTransparencyEnabledResponse(
+            in RadioResponseInfo info, boolean isEnabled);
+
+    /**
+     * Response of setCellularIdentifierTransparencyEnabled.
+     *
+     * @param info Response info struct containing response type, serial no. and error.
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:INVALID_STATE
+     */
+    void setCellularIdentifierTransparencyEnabledResponse(in RadioResponseInfo info);
 }
diff --git a/radio/aidl/android/hardware/radio/network/NasProtocolMessage.aidl b/radio/aidl/android/hardware/radio/network/NasProtocolMessage.aidl
new file mode 100644
index 0000000..e8d8047
--- /dev/null
+++ b/radio/aidl/android/hardware/radio/network/NasProtocolMessage.aidl
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2023 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.radio.network;
+
+/**
+ * Each enum value represents a message type on the NAS. The relevant cellular generation is noted.
+ * Sample spec references are provided, but generally only reference one network generation's spec.
+ *
+ * @hide
+ */
+@VintfStability
+@Backing(type="int")
+@JavaDerive(toString=true)
+enum NasProtocolMessage {
+    UNKNOWN = 0,
+    // Sample Reference: 3GPP TS 24.301 8.2.4
+    // Applies to 2g, 3g, and 4g networks
+    ATTACH_REQUEST = 1,
+    // Sample Reference: 3GPP TS 24.301 8.2.19
+    // Applies to 2g, 3g, 4g, and 5g networks
+    IDENTITY_RESPONSE = 2,
+    // Sample Reference: 3GPP TS 24.301 8.2.11
+    // Applies to 2g, 3g, and 4g networks
+    DETACH_REQUEST = 3,
+    // Sample Reference: 3GPP TS 24.301 8.2.29
+    // Note: that per the spec, only temporary IDs should be sent
+    // in the TAU Request, but since the EPS Mobile Identity field
+    // supports IMSIs, this is included as an extra safety measure
+    // to combat implementation bugs.
+    // Applies to 4g and 5g networks
+    TRACKING_AREA_UPDATE_REQUEST = 4,
+    // Sample Reference: 3GPP TS 24.008 4.4.3
+    // Applies to 2g and 3g networks
+    LOCATION_UPDATE_REQUEST = 5,
+    // Reference: 3GPP TS 24.008 4.7.7.1
+    // Applies to 2g and 3g networks
+    AUTHENTICATION_AND_CIPHERING_RESPONSE = 6,
+    // Reference: 3GPP TS 24.501 8.2.6
+    // Applies to 5g networks
+    REGISTRATION_REQUEST = 7,
+    // Reference: 3GPP TS 24.501 8.2.12
+    // Applies to 5g networks
+    DEREGISTRATION_REQUEST = 8
+}
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
index d57c83d..312b615 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
@@ -107,6 +107,9 @@
 
     ::ndk::ScopedAStatus setNullCipherAndIntegrityEnabled(int32_t serial, bool enabled) override;
     ::ndk::ScopedAStatus isNullCipherAndIntegrityEnabled(int32_t serial) override;
+    ::ndk::ScopedAStatus isCellularIdentifierTransparencyEnabled(int32_t serial) override;
+    ::ndk::ScopedAStatus setCellularIdentifierTransparencyEnabled(int32_t serial,
+                                                                  bool enabled) override;
 
   protected:
     std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkResponse> respond();
diff --git a/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp b/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
index a379eec..f5a1838 100644
--- a/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
+++ b/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
@@ -372,4 +372,19 @@
     respond()->setN1ModeEnabledResponse(notSupported(serial));
     return ok();
 }
+
+ScopedAStatus RadioNetwork::isCellularIdentifierTransparencyEnabled(int32_t serial) {
+    LOG_CALL << serial;
+    LOG(ERROR) << " isCellularIdentifierTransparencyEnabled is unsupported by HIDL HALs";
+    respond()->isCellularIdentifierTransparencyEnabledResponse(notSupported(serial), false);
+    return ok();
+}
+
+ScopedAStatus RadioNetwork::setCellularIdentifierTransparencyEnabled(int32_t serial,
+                                                                     bool /*enabled*/) {
+    LOG_CALL << serial;
+    LOG(ERROR) << " setCellularIdentifierTransparencyEnabled is unsupported by HIDL HALs";
+    respond()->setCellularIdentifierTransparencyEnabledResponse(notSupported(serial));
+    return ok();
+}
 }  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/vts/radio_network_indication.cpp b/radio/aidl/vts/radio_network_indication.cpp
index ae3bd4b..aa14af7 100644
--- a/radio/aidl/vts/radio_network_indication.cpp
+++ b/radio/aidl/vts/radio_network_indication.cpp
@@ -97,3 +97,9 @@
         RadioIndicationType /*type*/, const EmergencyRegResult& /*result*/) {
     return ndk::ScopedAStatus::ok();
 }
+
+ndk::ScopedAStatus RadioNetworkIndication::cellularIdentifierDisclosed(
+        RadioIndicationType /*type*/,
+        const CellularIdentifierDisclosure& /*disclosures*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_network_response.cpp b/radio/aidl/vts/radio_network_response.cpp
index 25d45a5..8c04591 100644
--- a/radio/aidl/vts/radio_network_response.cpp
+++ b/radio/aidl/vts/radio_network_response.cpp
@@ -320,3 +320,18 @@
     parent_network.notify(info.serial);
     return ndk::ScopedAStatus::ok();
 }
+
+ndk::ScopedAStatus RadioNetworkResponse::setCellularIdentifierTransparencyEnabledResponse(
+        const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::isCellularIdentifierTransparencyEnabledResponse(
+        const RadioResponseInfo& info, bool enabled) {
+    rspInfo = info;
+    this->isCellularIdentifierTransparencyEnabled = enabled;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_network_test.cpp b/radio/aidl/vts/radio_network_test.cpp
index 4e84116..8254873 100644
--- a/radio/aidl/vts/radio_network_test.cpp
+++ b/radio/aidl/vts/radio_network_test.cpp
@@ -1962,3 +1962,81 @@
             radioRsp_network->rspInfo.error,
             {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR}));
 }
+
+TEST_P(RadioNetworkTest, isCellularIdentifierTransparencyEnabled) {
+    int32_t aidl_version;
+    ndk::ScopedAStatus aidl_status = radio_network->getInterfaceVersion(&aidl_version);
+    ASSERT_OK(aidl_status);
+    if (aidl_version < 3) {
+        ALOGI("Skipped the test since"
+                " isCellularIdentifierTransparencyEnabled is not supported on version < 3.");
+        GTEST_SKIP();
+    }
+
+    serial = GetRandomSerialNumber();
+
+    ndk::ScopedAStatus res = radio_network->isCellularIdentifierTransparencyEnabled(serial);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+
+    ASSERT_TRUE(CheckAnyOfErrors(
+            radioRsp_network->rspInfo.error,
+            {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR}));
+
+    // the default value should be true if we have not called the setter
+    EXPECT_TRUE(radioRsp_network->isCellularIdentifierTransparencyEnabled);
+
+}
+
+TEST_P(RadioNetworkTest, setCellularIdentifierTransparencyEnabled) {
+    int32_t aidl_version;
+    ndk::ScopedAStatus aidl_status = radio_network->getInterfaceVersion(&aidl_version);
+    ASSERT_OK(aidl_status);
+    if (aidl_version < 3) {
+        ALOGI("Skipped the test since"
+                " setCellularIdentifierTransparencyEnabled is not supported on version < 3.");
+        GTEST_SKIP();
+    }
+
+    // Get current value
+    serial = GetRandomSerialNumber();
+    radio_network->isCellularIdentifierTransparencyEnabled(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    bool originalTransparencySetting = radioRsp_network->isCellularIdentifierTransparencyEnabled;
+
+    // We want to test flipping the value, so we are going to set it to the opposite of what
+    // the existing setting is. The test for isCellularIdentifierTransparencyEnabled should check
+    // for the right default value.
+    bool valueToSet = !originalTransparencySetting;
+    serial = GetRandomSerialNumber();
+    radio_network->setCellularIdentifierTransparencyEnabled(serial, valueToSet);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+
+    ASSERT_TRUE(CheckAnyOfErrors(
+            radioRsp_network->rspInfo.error,
+            {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR}));
+
+    // Assert the value has changed
+    serial = GetRandomSerialNumber();
+    ndk::ScopedAStatus res = radio_network->isCellularIdentifierTransparencyEnabled(serial);
+
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+    ASSERT_TRUE(CheckAnyOfErrors(
+            radioRsp_network->rspInfo.error,
+            {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR}));
+    EXPECT_EQ(valueToSet, radioRsp_network->isCellularIdentifierTransparencyEnabled);
+
+    // Reset original state
+    radio_network->setCellularIdentifierTransparencyEnabled(serial, originalTransparencySetting);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+}
diff --git a/radio/aidl/vts/radio_network_utils.h b/radio/aidl/vts/radio_network_utils.h
index 8f8f6b0..5cd4245 100644
--- a/radio/aidl/vts/radio_network_utils.h
+++ b/radio/aidl/vts/radio_network_utils.h
@@ -46,6 +46,7 @@
     std::vector<BarringInfo> barringInfoList;
     UsageSetting usageSetting;
     std::vector<RadioAccessSpecifier> specifiers;
+    bool isCellularIdentifierTransparencyEnabled;
 
     virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
 
@@ -169,6 +170,12 @@
             const RadioResponseInfo& info, bool isEnabled) override;
 
     virtual ndk::ScopedAStatus setN1ModeEnabledResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCellularIdentifierTransparencyEnabledResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus isCellularIdentifierTransparencyEnabledResponse(
+            const RadioResponseInfo& info, bool /*enabled*/) override;
 };
 
 /* Callback class for radio network indication */
@@ -226,6 +233,9 @@
 
     virtual ndk::ScopedAStatus emergencyNetworkScanResult(
             RadioIndicationType type, const EmergencyRegResult& result) override;
+
+    virtual ndk::ScopedAStatus cellularIdentifierDisclosed(
+            RadioIndicationType type, const CellularIdentifierDisclosure& disclosures) override;
 };
 
 // The main test class for Radio AIDL Network.