Vboot Reference: Make length types explicitly sized.

src/platform/vboot_reference/utils/kernel_utility.cc

 // 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.
 //
 // Utility for manipulating verified boot firmware images.
 //
 
 #include "kernel_utility.h"
 
 #include <errno.h>
@@ skipping 182 matching lines @@
 void KernelUtility::OutputSignedImage(void) {
   if (image_) {
     if (!WriteKernelImage(out_file_.c_str(), image_)) {
       cerr << "Couldn't write verified boot kernel image to file "
            << out_file_ <<".\n";
     }
   }
 }
 
 bool KernelUtility::GenerateSignedImage(void) {
-  uint32_t kernel_key_pub_len;
+  uint64_t kernel_key_pub_len;
   uint8_t* header_checksum;
   DigestContext ctx;
   image_ = KernelImageNew();
 
   Memcpy(image_->magic, KERNEL_MAGIC, KERNEL_MAGIC_SIZE);
 
   // TODO(gauravsh): make this a command line option.
   image_->header_version = 1;
   image_->firmware_sign_algorithm = (uint16_t) firmware_sign_algorithm_;
   // Copy pre-processed public signing key.
@@ skipping 135 matching lines @@
   }
   if (fu.is_verify()) {
     cerr << "Verification ";
     if (fu.VerifySignedImage())
       cerr << "SUCCESS.\n";
     else
       cerr << "FAILURE.\n";
   }
   return 0;
 }