payload_signer_unittest.cc revision 88b591f24cb3f94f982d7024c2e8ed25c2cc26a2
1// Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "update_engine/payload_generator/payload_signer.h" 6 7#include <string> 8#include <vector> 9 10#include <base/logging.h> 11#include <gtest/gtest.h> 12 13#include "update_engine/payload_verifier.h" 14#include "update_engine/update_metadata.pb.h" 15#include "update_engine/utils.h" 16 17using std::string; 18using std::vector; 19 20// Note: the test key was generated with the following command: 21// openssl genrsa -out unittest_key.pem 2048 22// The public-key version is created by the build system. 23 24namespace chromeos_update_engine { 25 26const char* kUnittestPrivateKeyPath = "unittest_key.pem"; 27const char* kUnittestPublicKeyPath = "unittest_key.pub.pem"; 28const char* kUnittestPrivateKey2Path = "unittest_key2.pem"; 29const char* kUnittestPublicKey2Path = "unittest_key2.pub.pem"; 30 31// Some data and its corresponding hash and signature: 32const char kDataToSign[] = "This is some data to sign."; 33 34// Generated by: 35// echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | 36// hexdump -v -e '" " 8/1 "0x%02x, " "\n"' 37const unsigned char kDataHash[] = { 38 0x7a, 0x07, 0xa6, 0x44, 0x08, 0x86, 0x20, 0xa6, 39 0xc1, 0xf8, 0xd9, 0x02, 0x05, 0x63, 0x0d, 0xb7, 40 0xfc, 0x2b, 0xa0, 0xa9, 0x7c, 0x9d, 0x1d, 0x8c, 41 0x01, 0xf5, 0x78, 0x6d, 0xc5, 0x11, 0xb4, 0x06 42}; 43 44// Generated with openssl 1.0, which at the time of this writing, you need 45// to download and install yourself. Here's my command: 46// echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | 47// ~/local/bin/openssl pkeyutl -sign -inkey unittest_key.pem -pkeyopt 48// digest:sha256 | hexdump -v -e '" " 8/1 "0x%02x, " "\n"' 49const unsigned char kDataSignature[] = { 50 0x9f, 0x86, 0x25, 0x8b, 0xf3, 0xcc, 0xe3, 0x95, 51 0x5f, 0x45, 0x83, 0xb2, 0x66, 0xf0, 0x2a, 0xcf, 52 0xb7, 0xaa, 0x52, 0x25, 0x7a, 0xdd, 0x9d, 0x65, 53 0xe5, 0xd6, 0x02, 0x4b, 0x37, 0x99, 0x53, 0x06, 54 0xc2, 0xc9, 0x37, 0x36, 0x25, 0x62, 0x09, 0x4f, 55 0x6b, 0x22, 0xf8, 0xb3, 0x89, 0x14, 0x98, 0x1a, 56 0xbc, 0x30, 0x90, 0x4a, 0x43, 0xf5, 0xea, 0x2e, 57 0xf0, 0xa4, 0xba, 0xc3, 0xa7, 0xa3, 0x44, 0x70, 58 0xd6, 0xc4, 0x89, 0xd8, 0x45, 0x71, 0xbb, 0xee, 59 0x59, 0x87, 0x3d, 0xd5, 0xe5, 0x40, 0x22, 0x3d, 60 0x73, 0x7e, 0x2a, 0x58, 0x93, 0x8e, 0xcb, 0x9c, 61 0xf2, 0xbb, 0x4a, 0xc9, 0xd2, 0x2c, 0x52, 0x42, 62 0xb0, 0xd1, 0x13, 0x22, 0xa4, 0x78, 0xc7, 0xc6, 63 0x3e, 0xf1, 0xdc, 0x4c, 0x7b, 0x2d, 0x40, 0xda, 64 0x58, 0xac, 0x4a, 0x11, 0x96, 0x3d, 0xa0, 0x01, 65 0xf6, 0x96, 0x74, 0xf6, 0x6c, 0x0c, 0x49, 0x69, 66 0x4e, 0xc1, 0x7e, 0x9f, 0x2a, 0x42, 0xdd, 0x15, 67 0x6b, 0x37, 0x2e, 0x3a, 0xa7, 0xa7, 0x6d, 0x91, 68 0x13, 0xe8, 0x59, 0xde, 0xfe, 0x99, 0x07, 0xd9, 69 0x34, 0x0f, 0x17, 0xb3, 0x05, 0x4c, 0xd2, 0xc6, 70 0x82, 0xb7, 0x38, 0x36, 0x63, 0x1d, 0x9e, 0x21, 71 0xa6, 0x32, 0xef, 0xf1, 0x65, 0xe6, 0xed, 0x95, 72 0x25, 0x9b, 0x61, 0xe0, 0xba, 0x86, 0xa1, 0x7f, 73 0xf8, 0xa5, 0x4a, 0x32, 0x1f, 0x15, 0x20, 0x8a, 74 0x41, 0xc5, 0xb0, 0xd9, 0x4a, 0xda, 0x85, 0xf3, 75 0xdc, 0xa0, 0x98, 0x5d, 0x1d, 0x18, 0x9d, 0x2e, 76 0x42, 0xea, 0x69, 0x13, 0x74, 0x3c, 0x74, 0xf7, 77 0x6d, 0x43, 0xb0, 0x63, 0x90, 0xdb, 0x04, 0xd5, 78 0x05, 0xc9, 0x73, 0x1f, 0x6c, 0xd6, 0xfa, 0x46, 79 0x4e, 0x0f, 0x33, 0x58, 0x5b, 0x0d, 0x1b, 0x55, 80 0x39, 0xb9, 0x0f, 0x43, 0x37, 0xc0, 0x06, 0x0c, 81 0x29, 0x93, 0x43, 0xc7, 0x43, 0xb9, 0xab, 0x7d 82}; 83 84namespace { 85void SignSampleData(vector<char>* out_signature_blob) { 86 string data_path; 87 ASSERT_TRUE( 88 utils::MakeTempFile("data.XXXXXX", &data_path, nullptr)); 89 ScopedPathUnlinker data_path_unlinker(data_path); 90 ASSERT_TRUE(utils::WriteFile(data_path.c_str(), 91 kDataToSign, 92 strlen(kDataToSign))); 93 uint64_t length = 0; 94 EXPECT_TRUE(PayloadSigner::SignatureBlobLength( 95 vector<string> (1, kUnittestPrivateKeyPath), 96 &length)); 97 EXPECT_GT(length, 0); 98 EXPECT_TRUE(PayloadSigner::SignPayload( 99 data_path, 100 vector<string>(1, kUnittestPrivateKeyPath), 101 out_signature_blob)); 102 EXPECT_EQ(length, out_signature_blob->size()); 103} 104} // namespace 105 106TEST(PayloadSignerTest, SimpleTest) { 107 vector<char> signature_blob; 108 SignSampleData(&signature_blob); 109 110 // Check the signature itself 111 Signatures signatures; 112 EXPECT_TRUE(signatures.ParseFromArray(&signature_blob[0], 113 signature_blob.size())); 114 EXPECT_EQ(1, signatures.signatures_size()); 115 const Signatures_Signature& signature = signatures.signatures(0); 116 EXPECT_EQ(kSignatureMessageOriginalVersion, signature.version()); 117 const string sig_data = signature.data(); 118 ASSERT_EQ(arraysize(kDataSignature), sig_data.size()); 119 for (size_t i = 0; i < arraysize(kDataSignature); i++) { 120 EXPECT_EQ(static_cast<char>(kDataSignature[i]), sig_data[i]); 121 } 122} 123 124TEST(PayloadSignerTest, VerifySignatureTest) { 125 vector<char> signature_blob; 126 SignSampleData(&signature_blob); 127 128 vector<char> hash_data; 129 EXPECT_TRUE(PayloadVerifier::VerifySignature(signature_blob, 130 kUnittestPublicKeyPath, 131 &hash_data)); 132 vector<char> padded_hash_data(reinterpret_cast<const char *>(kDataHash), 133 reinterpret_cast<const char *>(kDataHash + 134 sizeof(kDataHash))); 135 PayloadVerifier::PadRSA2048SHA256Hash(&padded_hash_data); 136 ASSERT_EQ(padded_hash_data.size(), hash_data.size()); 137 for (size_t i = 0; i < padded_hash_data.size(); i++) { 138 EXPECT_EQ(padded_hash_data[i], hash_data[i]); 139 } 140} 141 142} // namespace chromeos_update_engine 143