diff --git a/core/api/current.txt b/core/api/current.txt
index d1f322612f0ca..e72f943da5207 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -17707,6 +17707,7 @@ package android.hardware.camera2 {
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<java.lang.Float> SCALER_AVAILABLE_MAX_DIGITAL_ZOOM;
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<int[]> SCALER_AVAILABLE_ROTATE_AND_CROP_MODES;
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<java.lang.Integer> SCALER_CROPPING_TYPE;
+    field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<android.util.Size> SCALER_DEFAULT_SECURE_IMAGE_SIZE;
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<android.hardware.camera2.params.MandatoryStreamCombination[]> SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS;
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<android.hardware.camera2.params.MandatoryStreamCombination[]> SCALER_MANDATORY_STREAM_COMBINATIONS;
     field @NonNull public static final android.hardware.camera2.CameraCharacteristics.Key<android.hardware.camera2.params.StreamConfigurationMap> SCALER_STREAM_CONFIGURATION_MAP;
diff --git a/core/java/android/hardware/camera2/CameraCharacteristics.java b/core/java/android/hardware/camera2/CameraCharacteristics.java
index 0f595b7000132..16ab900dee06c 100644
--- a/core/java/android/hardware/camera2/CameraCharacteristics.java
+++ b/core/java/android/hardware/camera2/CameraCharacteristics.java
@@ -2907,6 +2907,29 @@ public final class CameraCharacteristics extends CameraMetadata<CameraCharacteri
     public static final Key<int[]> SCALER_AVAILABLE_ROTATE_AND_CROP_MODES =
             new Key<int[]>("android.scaler.availableRotateAndCropModes", int[].class);
 
+    /**
+     * <p>Default YUV/PRIVATE size to use for requesting secure image buffers.</p>
+     * <p>This entry lists the default size supported in the secure camera mode. This entry is
+     * optional on devices support the SECURE_IMAGE_DATA capability. This entry will be null
+     * if the camera device does not list SECURE_IMAGE_DATA capability.</p>
+     * <p>When the key is present, only a PRIVATE/YUV output of the specified size is guaranteed
+     * to be supported by the camera HAL in the secure camera mode. Any other format or
+     * resolutions might not be supported. Use
+     * {@link CameraDevice#isSessionConfigurationSupported }
+     * API to query if a secure session configuration is supported if the device supports this
+     * API.</p>
+     * <p>If this key returns null on a device with SECURE_IMAGE_DATA capability, the application
+     * can assume all output sizes listed in the
+     * {@link android.hardware.camera2.params.StreamConfigurationMap }
+     * are supported.</p>
+     * <p><b>Units</b>: Pixels</p>
+     * <p><b>Optional</b> - The value for this key may be {@code null} on some devices.</p>
+     */
+    @PublicKey
+    @NonNull
+    public static final Key<android.util.Size> SCALER_DEFAULT_SECURE_IMAGE_SIZE =
+            new Key<android.util.Size>("android.scaler.defaultSecureImageSize", android.util.Size.class);
+
     /**
      * <p>The area of the image sensor which corresponds to active pixels after any geometric
      * distortion correction has been applied.</p>