AU: Verify delta payload signature and signed hash.

delta_performer_unittest.cc

 // Copyright (c) 2009 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.
 
 #include <sys/mount.h>
 #include <inttypes.h>
 
 #include <algorithm>
 #include <string>
 #include <vector>
@@ skipping 11 matching lines @@
 #include "update_engine/update_metadata.pb.h"
 #include "update_engine/utils.h"
 
 namespace chromeos_update_engine {
 
 using std::min;
 using std::string;
 using std::vector;
 
 extern const char* kUnittestPrivateKeyPath;
+extern const char* kUnittestPublicKeyPath;
 
 class DeltaPerformerTest : public ::testing::Test { };
 
 TEST(DeltaPerformerTest, ExtentsToByteStringTest) {
   uint64_t test[] = {1, 1, 4, 2, kSparseHole, 1, 0, 1};
   COMPILE_ASSERT(arraysize(test) % 2 == 0, array_size_uneven);
   const uint64_t block_size = 4096;
   const uint64_t file_length = 5 * block_size - 13;
 
   google::protobuf::RepeatedPtrField<Extent> extents;
@@ skipping 206 matching lines @@
 
   // Wrapper around close. Returns 0 on success or -errno on error.
   EXPECT_EQ(0, performer.Close());
 
   CompareFilesByBlock(old_kernel, new_kernel);
 
   vector<char> updated_kernel_partition;
   EXPECT_TRUE(utils::ReadFile(old_kernel, &updated_kernel_partition));
   EXPECT_EQ(0, strncmp(&updated_kernel_partition[0], new_data_string,
                        strlen(new_data_string)));
+
+  EXPECT_TRUE(utils::FileExists(kUnittestPublicKeyPath));
+  EXPECT_TRUE(performer.VerifyPayload(kUnittestPublicKeyPath));
 }
 
 }  // namespace chromeos_update_engine