Vboot reference: A basic user-land verified boot firmware signing and verification utility.

src/platform/vboot_reference/tests/firmware_image_tests.c

 /* 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.
  *
  * Tests for firmware image library.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 
@@ skipping 136 matching lines @@
     success = 0;
   if (!TEST_EQ(VerifyFirmwareImage(root_key, image, DEV_MODE_DISABLED),
                VERIFY_FIRMWARE_ROOT_SIGNATURE_FAILED,
                "FirmwareImage Root Signature Tamper Verification (Trusted)"))
     success = 0;
 
   return success;
 }
 
 int main(int argc, char* argv[]) {
-  int len;
+  uint32_t len;
   uint8_t* sign_key_buf = NULL;
   uint8_t* root_key_blob = NULL;
   uint8_t* firmware_blob = NULL;
   FirmwareImage* image = NULL;
   RSAPublicKey* root_key = NULL;
   int error_code = 1;
   char* tmp_firmwareblob_file = ".tmpFirmwareBlob";
 
   if(argc != 6) {
     fprintf(stderr, "Usage: %s <algorithm> <root key> <processed root pubkey>"
             " <signing key> <processed signing key>\n", argv[0]);
     return -1;
   }
 
   /* Read verification keys and create a test image. */
   root_key = RSAPublicKeyFromFile(argv[3]);
   root_key_blob = BufferFromFile(argv[3], &len);
   sign_key_buf = BufferFromFile(argv[5], &len);
   image = GenerateTestFirmwareImage(atoi(argv[1]), sign_key_buf, 1,
                                     1, 1000);
 
   if (!root_key || !sign_key_buf || !image) {
     error_code = 1;
     goto failure;
   }
 
   /* Generate and populate signatures. */
-  if (!AddKeySignature(image, argv[2])) {
+  if (!AddFirmwareKeySignature(image, argv[2])) {
     fprintf(stderr, "Couldn't create key signature.\n");
     error_code = 1;
     goto failure;
   }
 
   if (!AddFirmwareSignature(image, argv[4], image->sign_algorithm)) {
     fprintf(stderr, "Couldn't create firmware and preamble signature.\n");
     error_code = 1;
     goto failure;
   }
@@ skipping 24 matching lines @@
 
 failure:
   Free(firmware_blob);
   Free(image);
   Free(sign_key_buf);
   Free(root_key_blob);
   Free(root_key);
 
   return error_code;
 }