sign_official_build install mode should use the installer kernel data key

scripts/image_signing/sign_official_build.sh

 #!/bin/bash
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Sign the final build image using the "official" keys.
 #
 # Prerequisite tools needed in the system path:
 #
@@ skipping 372 matching lines @@
   local stateful_dir=$(make_temp_dir)
   mount_image_partition ${OUTPUT_IMAGE} 1 ${stateful_dir}
   sudo cp ${temp_out_vb} ${stateful_dir}/vmlinuz_hd.vblock
 
   echo "Signed recovery image output to ${OUTPUT_IMAGE}"
 }
 
 # Generate the factory install image.
 sign_for_factory_install() {
   ${SCRIPT_DIR}/resign_image.sh ${INPUT_IMAGE} ${OUTPUT_IMAGE} \
-    ${KEY_DIR}/recovery_kernel_data_key.vbprivk \
+    ${KEY_DIR}/installer_kernel_data_key.vbprivk \
     ${KEY_DIR}/installer_kernel.keyblock
   echo "Signed factory install image output to ${OUTPUT_IMAGE}"
 }
 
 # Verification
 if [ "${TYPE}" == "verify" ]; then
   verify_image
   exit 1
 fi
 
@@ skipping 27 matching lines @@
     4
   update_rootfs_hash ${INPUT_IMAGE} \
     ${KEY_DIR}/recovery_kernel.keyblock \
     ${KEY_DIR}/recovery_kernel_data_key.vbprivk \
     2
   sign_for_recovery
 elif [ "${TYPE}" == "install" ]; then
   resign_firmware_payload ${INPUT_IMAGE}
   update_rootfs_hash ${INPUT_IMAGE} \
     ${KEY_DIR}/installer_kernel.keyblock \
-    ${KEY_DIR}/recovery_kernel_data_key.vbprivk \
+    ${KEY_DIR}/installer_kernel_data_key.vbprivk \
     2
   sign_for_factory_install
 else
   echo "Invalid type ${TYPE}"
   exit 1
 fi