VBoot Reference: Fix splicing bugs in Firmware and Kernel verification.

src/platform/vboot_reference/tests/firmware_splicing_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.
+ *
+ * Splicing tests for the firmware image verification library.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "file_keys.h"
+#include "firmware_image.h"
+#include "padding.h"
+#include "rsa_utility.h"
+#include "test_common.h"
+#include "utility.h"
+
+void VerifyFirmwareSplicingTest()
+{
+  uint64_t len;
+  FirmwareImage* image1 = NULL;
+  FirmwareImage* image2 = NULL;
+  uint8_t* firmware_blob = NULL;
+  uint8_t* firmware_sign_key_buf = NULL;
+  RSAPublicKey* root_key = RSAPublicKeyFromFile("testkeys/key_rsa8192.keyb");
+  uint8_t* root_key_blob = BufferFromFile("testkeys/key_rsa8192.keyb",
+                                          &len);
+  firmware_sign_key_buf= BufferFromFile("testkeys/key_rsa1024.keyb", &len);
+  image1 = GenerateTestFirmwareImage(0, /* RSA1024/SHA1 */
+                                     firmware_sign_key_buf,
+                                     1,  /* Firmware Key Version. */
+                                     1,  /* Firmware Version */
+                                     1000,
+                                     "testkeys/key_rsa8192.pem",
+                                     "testkeys/key_rsa1024.pem",
+                                     (uint8_t) 'F');  /* Firmware data fill. */
+  image2 = GenerateTestFirmwareImage(0, /* RSA1024/SHA1 */
+                                     firmware_sign_key_buf,
+                                     1,  /* Firmware Key Version. */
+                                     2,  /* Firmware Version */
+                                     1000,
+                                     "testkeys/key_rsa8192.pem",
+                                     "testkeys/key_rsa1024.pem",
+                                     (uint8_t) 'G');  /* Firmware data fill. */
+  /* Verify that the originals verify. */
+  TEST_EQ(VerifyFirmwareImage(root_key, image1),
+          VERIFY_FIRMWARE_SUCCESS,
+          "FirmwareImage firmware_data Original");
+  TEST_EQ(VerifyFirmwareImage(root_key, image2),
+          VERIFY_FIRMWARE_SUCCESS,
+          "FirmwareImage firmware_data Original");
+
+  /* Splice firmware_data + firmware signature from [image1]
+   * and put it into [image2]. */
+  Memcpy(image2->firmware_signature, image1->firmware_signature,
+         siglen_map[0]);
+  Memcpy(image2->firmware_data, image1->firmware_data,
+         image2->firmware_len);
+
+  TEST_EQ(VerifyFirmwareImage(root_key, image2),
+          VERIFY_FIRMWARE_SIGNATURE_FAILED,
+          "FirmwareImage firmware_data Splicing");
+  firmware_blob = GetFirmwareBlob(image2, &len);
+  TEST_EQ(VerifyFirmware(root_key_blob, firmware_blob),
+          VERIFY_FIRMWARE_SIGNATURE_FAILED,
+          "Firmware Blob firmware_data Splicing");
+}
+
+int main(int argc, char* argv[])
+{
+  int error_code = 0;
+  VerifyFirmwareSplicingTest();
+  if (!gTestSuccess)
+    error_code = 255;
+  return error_code;
+}