AU: Sign delta payloads

generate_delta_main.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <set>
@@ skipping 11 matching lines @@
 
 DEFINE_string(old_dir, "",
               "Directory where the old rootfs is loop mounted read-only");
 DEFINE_string(new_dir, "",
               "Directory where the new rootfs is loop mounted read-only");
 DEFINE_string(old_image, "", "Path to the old rootfs");
 DEFINE_string(new_image, "", "Path to the new rootfs");
 DEFINE_string(out_file, "", "Path to output file");
 DEFINE_string(old_kernel, "", "Path to the old kernel partition image");
 DEFINE_string(new_kernel, "", "Path to the new kernel partition image");
+DEFINE_string(private_key, "", "Path to private key in .pem format");
 DEFINE_string(apply_delta, "",
               "If set, apply delta over old_image. (For debugging.)");
 
 // This file contains a simple program that takes an old path, a new path,
 // and an output file as arguments and the path to an output file and
 // generates a delta that can be sent to Chrome OS clients.
 
 using std::set;
 using std::string;
 using std::vector;
@@ skipping 49 matching lines @@
   if ((!IsDir(FLAGS_old_dir.c_str())) || (!IsDir(FLAGS_new_dir.c_str()))) {
     LOG(FATAL) << "old_dir or new_dir not directory";
   }
   
   DeltaDiffGenerator::GenerateDeltaUpdateFile(FLAGS_old_dir,
                                               FLAGS_old_image,
                                               FLAGS_new_dir,
                                               FLAGS_new_image,
                                               FLAGS_old_kernel,
                                               FLAGS_new_kernel,
-                                              FLAGS_out_file);
+                                              FLAGS_out_file,
+                                              FLAGS_private_key);
 
   return 0;
 }
 
 }  // namespace {}
 
 }  // namespace chromeos_update_engine
 
 int main(int argc, char** argv) {
   return chromeos_update_engine::Main(argc, argv);
 }