Alex Deymo | aea4c1c | 2015-08-19 20:24:43 -0700 | [diff] [blame] | 1 | // |
| 2 | // Copyright (C) 2010 The Android Open Source Project |
| 3 | // |
| 4 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | // you may not use this file except in compliance with the License. |
| 6 | // You may obtain a copy of the License at |
| 7 | // |
| 8 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | // |
| 10 | // Unless required by applicable law or agreed to in writing, software |
| 11 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | // See the License for the specific language governing permissions and |
| 14 | // limitations under the License. |
| 15 | // |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 16 | |
Alex Deymo | 923d8fa | 2014-07-15 17:58:51 -0700 | [diff] [blame] | 17 | #include "update_engine/payload_generator/payload_signer.h" |
| 18 | |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 19 | #include <string> |
| 20 | #include <vector> |
Alex Deymo | 923d8fa | 2014-07-15 17:58:51 -0700 | [diff] [blame] | 21 | |
| 22 | #include <base/logging.h> |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 23 | #include <gtest/gtest.h> |
Alex Deymo | 923d8fa | 2014-07-15 17:58:51 -0700 | [diff] [blame] | 24 | |
Alex Deymo | 39910dc | 2015-11-09 17:04:30 -0800 | [diff] [blame] | 25 | #include "update_engine/common/hash_calculator.h" |
| 26 | #include "update_engine/common/utils.h" |
| 27 | #include "update_engine/payload_consumer/payload_constants.h" |
| 28 | #include "update_engine/payload_consumer/payload_verifier.h" |
Sen Jiang | aef1c6f | 2015-10-07 10:05:32 -0700 | [diff] [blame] | 29 | #include "update_engine/payload_generator/payload_file.h" |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 30 | #include "update_engine/update_metadata.pb.h" |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 31 | |
| 32 | using std::string; |
| 33 | using std::vector; |
| 34 | |
| 35 | // Note: the test key was generated with the following command: |
Andrew de los Reyes | bdfaaf0 | 2011-03-30 10:35:12 -0700 | [diff] [blame] | 36 | // openssl genrsa -out unittest_key.pem 2048 |
Andrew de los Reyes | c24e3f3 | 2011-08-30 15:45:20 -0700 | [diff] [blame] | 37 | // The public-key version is created by the build system. |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 38 | |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 39 | namespace chromeos_update_engine { |
| 40 | |
Andrew de los Reyes | 932bc4c | 2010-08-23 18:14:09 -0700 | [diff] [blame] | 41 | const char* kUnittestPrivateKeyPath = "unittest_key.pem"; |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 42 | const char* kUnittestPublicKeyPath = "unittest_key.pub.pem"; |
Andrew de los Reyes | c24e3f3 | 2011-08-30 15:45:20 -0700 | [diff] [blame] | 43 | const char* kUnittestPrivateKey2Path = "unittest_key2.pem"; |
| 44 | const char* kUnittestPublicKey2Path = "unittest_key2.pub.pem"; |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 45 | |
| 46 | // Some data and its corresponding hash and signature: |
| 47 | const char kDataToSign[] = "This is some data to sign."; |
Andrew de los Reyes | bdfaaf0 | 2011-03-30 10:35:12 -0700 | [diff] [blame] | 48 | |
| 49 | // Generated by: |
| 50 | // echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | |
| 51 | // hexdump -v -e '" " 8/1 "0x%02x, " "\n"' |
Alex Vakulenko | f68bbbc | 2015-02-09 12:53:18 -0800 | [diff] [blame] | 52 | const uint8_t kDataHash[] = { |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 53 | 0x7a, 0x07, 0xa6, 0x44, 0x08, 0x86, 0x20, 0xa6, |
| 54 | 0xc1, 0xf8, 0xd9, 0x02, 0x05, 0x63, 0x0d, 0xb7, |
| 55 | 0xfc, 0x2b, 0xa0, 0xa9, 0x7c, 0x9d, 0x1d, 0x8c, |
| 56 | 0x01, 0xf5, 0x78, 0x6d, 0xc5, 0x11, 0xb4, 0x06 |
| 57 | }; |
Andrew de los Reyes | bdfaaf0 | 2011-03-30 10:35:12 -0700 | [diff] [blame] | 58 | |
| 59 | // Generated with openssl 1.0, which at the time of this writing, you need |
| 60 | // to download and install yourself. Here's my command: |
| 61 | // echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | |
| 62 | // ~/local/bin/openssl pkeyutl -sign -inkey unittest_key.pem -pkeyopt |
| 63 | // digest:sha256 | hexdump -v -e '" " 8/1 "0x%02x, " "\n"' |
Alex Vakulenko | f68bbbc | 2015-02-09 12:53:18 -0800 | [diff] [blame] | 64 | const uint8_t kDataSignature[] = { |
Andrew de los Reyes | bdfaaf0 | 2011-03-30 10:35:12 -0700 | [diff] [blame] | 65 | 0x9f, 0x86, 0x25, 0x8b, 0xf3, 0xcc, 0xe3, 0x95, |
| 66 | 0x5f, 0x45, 0x83, 0xb2, 0x66, 0xf0, 0x2a, 0xcf, |
| 67 | 0xb7, 0xaa, 0x52, 0x25, 0x7a, 0xdd, 0x9d, 0x65, |
| 68 | 0xe5, 0xd6, 0x02, 0x4b, 0x37, 0x99, 0x53, 0x06, |
| 69 | 0xc2, 0xc9, 0x37, 0x36, 0x25, 0x62, 0x09, 0x4f, |
| 70 | 0x6b, 0x22, 0xf8, 0xb3, 0x89, 0x14, 0x98, 0x1a, |
| 71 | 0xbc, 0x30, 0x90, 0x4a, 0x43, 0xf5, 0xea, 0x2e, |
| 72 | 0xf0, 0xa4, 0xba, 0xc3, 0xa7, 0xa3, 0x44, 0x70, |
| 73 | 0xd6, 0xc4, 0x89, 0xd8, 0x45, 0x71, 0xbb, 0xee, |
| 74 | 0x59, 0x87, 0x3d, 0xd5, 0xe5, 0x40, 0x22, 0x3d, |
| 75 | 0x73, 0x7e, 0x2a, 0x58, 0x93, 0x8e, 0xcb, 0x9c, |
| 76 | 0xf2, 0xbb, 0x4a, 0xc9, 0xd2, 0x2c, 0x52, 0x42, |
| 77 | 0xb0, 0xd1, 0x13, 0x22, 0xa4, 0x78, 0xc7, 0xc6, |
| 78 | 0x3e, 0xf1, 0xdc, 0x4c, 0x7b, 0x2d, 0x40, 0xda, |
| 79 | 0x58, 0xac, 0x4a, 0x11, 0x96, 0x3d, 0xa0, 0x01, |
| 80 | 0xf6, 0x96, 0x74, 0xf6, 0x6c, 0x0c, 0x49, 0x69, |
| 81 | 0x4e, 0xc1, 0x7e, 0x9f, 0x2a, 0x42, 0xdd, 0x15, |
| 82 | 0x6b, 0x37, 0x2e, 0x3a, 0xa7, 0xa7, 0x6d, 0x91, |
| 83 | 0x13, 0xe8, 0x59, 0xde, 0xfe, 0x99, 0x07, 0xd9, |
| 84 | 0x34, 0x0f, 0x17, 0xb3, 0x05, 0x4c, 0xd2, 0xc6, |
| 85 | 0x82, 0xb7, 0x38, 0x36, 0x63, 0x1d, 0x9e, 0x21, |
| 86 | 0xa6, 0x32, 0xef, 0xf1, 0x65, 0xe6, 0xed, 0x95, |
| 87 | 0x25, 0x9b, 0x61, 0xe0, 0xba, 0x86, 0xa1, 0x7f, |
| 88 | 0xf8, 0xa5, 0x4a, 0x32, 0x1f, 0x15, 0x20, 0x8a, |
| 89 | 0x41, 0xc5, 0xb0, 0xd9, 0x4a, 0xda, 0x85, 0xf3, |
| 90 | 0xdc, 0xa0, 0x98, 0x5d, 0x1d, 0x18, 0x9d, 0x2e, |
| 91 | 0x42, 0xea, 0x69, 0x13, 0x74, 0x3c, 0x74, 0xf7, |
| 92 | 0x6d, 0x43, 0xb0, 0x63, 0x90, 0xdb, 0x04, 0xd5, |
| 93 | 0x05, 0xc9, 0x73, 0x1f, 0x6c, 0xd6, 0xfa, 0x46, |
| 94 | 0x4e, 0x0f, 0x33, 0x58, 0x5b, 0x0d, 0x1b, 0x55, |
| 95 | 0x39, 0xb9, 0x0f, 0x43, 0x37, 0xc0, 0x06, 0x0c, |
| 96 | 0x29, 0x93, 0x43, 0xc7, 0x43, 0xb9, 0xab, 0x7d |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 97 | }; |
Andrew de los Reyes | 932bc4c | 2010-08-23 18:14:09 -0700 | [diff] [blame] | 98 | |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 99 | namespace { |
Alex Vakulenko | 3f39d5c | 2015-10-13 09:27:13 -0700 | [diff] [blame] | 100 | void SignSampleData(brillo::Blob* out_signature_blob, |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 101 | const vector<string>& private_keys) { |
Sen Jiang | 720df3e | 2015-10-01 13:10:44 -0700 | [diff] [blame] | 102 | brillo::Blob data_blob(std::begin(kDataToSign), |
| 103 | std::begin(kDataToSign) + strlen(kDataToSign)); |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 104 | uint64_t length = 0; |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 105 | EXPECT_TRUE(PayloadSigner::SignatureBlobLength(private_keys, &length)); |
Alex Deymo | 80f70ff | 2016-02-10 16:08:11 -0800 | [diff] [blame] | 106 | EXPECT_GT(length, 0U); |
Sen Jiang | 720df3e | 2015-10-01 13:10:44 -0700 | [diff] [blame] | 107 | brillo::Blob hash_blob; |
Alex Deymo | 39910dc | 2015-11-09 17:04:30 -0800 | [diff] [blame] | 108 | EXPECT_TRUE(HashCalculator::RawHashOfBytes(data_blob.data(), |
| 109 | data_blob.size(), |
| 110 | &hash_blob)); |
Sen Jiang | 720df3e | 2015-10-01 13:10:44 -0700 | [diff] [blame] | 111 | EXPECT_TRUE(PayloadSigner::SignHashWithKeys( |
| 112 | hash_blob, |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 113 | private_keys, |
Andrew de los Reyes | c24e3f3 | 2011-08-30 15:45:20 -0700 | [diff] [blame] | 114 | out_signature_blob)); |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 115 | EXPECT_EQ(length, out_signature_blob->size()); |
| 116 | } |
Alex Vakulenko | d2779df | 2014-06-16 13:19:00 -0700 | [diff] [blame] | 117 | } // namespace |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 118 | |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 119 | class PayloadSignerTest : public ::testing::Test { |
| 120 | protected: |
| 121 | void SetUp() override { |
| 122 | PayloadVerifier::PadRSA2048SHA256Hash(&padded_hash_data_); |
| 123 | } |
| 124 | |
Sen Jiang | aef1c6f | 2015-10-07 10:05:32 -0700 | [diff] [blame] | 125 | void DoWriteAndLoadPayloadTest(const PayloadGenerationConfig& config) { |
| 126 | PayloadFile payload; |
| 127 | payload.Init(config); |
| 128 | string payload_path; |
| 129 | EXPECT_TRUE(utils::MakeTempFile("payload.XXXXXX", &payload_path, nullptr)); |
| 130 | ScopedPathUnlinker payload_path_unlinker(payload_path); |
| 131 | uint64_t metadata_size; |
| 132 | EXPECT_TRUE( |
| 133 | payload.WritePayload(payload_path, "/dev/null", "", &metadata_size)); |
Alex Deymo | 98e691c | 2016-02-04 21:05:45 -0800 | [diff] [blame] | 134 | brillo::Blob payload_metadata_blob; |
Sen Jiang | aef1c6f | 2015-10-07 10:05:32 -0700 | [diff] [blame] | 135 | DeltaArchiveManifest manifest; |
| 136 | uint64_t load_metadata_size, load_major_version; |
Alex Deymo | 98e691c | 2016-02-04 21:05:45 -0800 | [diff] [blame] | 137 | EXPECT_TRUE(PayloadSigner::LoadPayloadMetadata(payload_path, |
| 138 | &payload_metadata_blob, |
| 139 | &manifest, |
| 140 | &load_major_version, |
| 141 | &load_metadata_size, |
| 142 | nullptr)); |
| 143 | EXPECT_EQ(metadata_size, payload_metadata_blob.size()); |
Sen Jiang | aef1c6f | 2015-10-07 10:05:32 -0700 | [diff] [blame] | 144 | EXPECT_EQ(config.major_version, load_major_version); |
| 145 | EXPECT_EQ(metadata_size, load_metadata_size); |
| 146 | } |
| 147 | |
Alex Vakulenko | 3f39d5c | 2015-10-13 09:27:13 -0700 | [diff] [blame] | 148 | brillo::Blob padded_hash_data_{std::begin(kDataHash), std::end(kDataHash)}; |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 149 | }; |
| 150 | |
Sen Jiang | aef1c6f | 2015-10-07 10:05:32 -0700 | [diff] [blame] | 151 | TEST_F(PayloadSignerTest, LoadPayloadV1Test) { |
| 152 | PayloadGenerationConfig config; |
| 153 | config.major_version = kChromeOSMajorPayloadVersion; |
| 154 | DoWriteAndLoadPayloadTest(config); |
| 155 | } |
| 156 | |
| 157 | TEST_F(PayloadSignerTest, LoadPayloadV2Test) { |
| 158 | PayloadGenerationConfig config; |
| 159 | config.major_version = kBrilloMajorPayloadVersion; |
| 160 | DoWriteAndLoadPayloadTest(config); |
| 161 | } |
| 162 | |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 163 | TEST_F(PayloadSignerTest, SignSimpleTextTest) { |
Alex Vakulenko | 3f39d5c | 2015-10-13 09:27:13 -0700 | [diff] [blame] | 164 | brillo::Blob signature_blob; |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 165 | SignSampleData(&signature_blob, {kUnittestPrivateKeyPath}); |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 166 | |
| 167 | // Check the signature itself |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 168 | Signatures signatures; |
Alex Vakulenko | f68bbbc | 2015-02-09 12:53:18 -0800 | [diff] [blame] | 169 | EXPECT_TRUE(signatures.ParseFromArray(signature_blob.data(), |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 170 | signature_blob.size())); |
| 171 | EXPECT_EQ(1, signatures.signatures_size()); |
| 172 | const Signatures_Signature& signature = signatures.signatures(0); |
Alex Deymo | 80f70ff | 2016-02-10 16:08:11 -0800 | [diff] [blame] | 173 | EXPECT_EQ(1U, signature.version()); |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 174 | const string sig_data = signature.data(); |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 175 | ASSERT_EQ(arraysize(kDataSignature), sig_data.size()); |
| 176 | for (size_t i = 0; i < arraysize(kDataSignature); i++) { |
Alex Vakulenko | f68bbbc | 2015-02-09 12:53:18 -0800 | [diff] [blame] | 177 | EXPECT_EQ(kDataSignature[i], static_cast<uint8_t>(sig_data[i])); |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 178 | } |
| 179 | } |
| 180 | |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 181 | TEST_F(PayloadSignerTest, VerifyAllSignatureTest) { |
Alex Vakulenko | 3f39d5c | 2015-10-13 09:27:13 -0700 | [diff] [blame] | 182 | brillo::Blob signature_blob; |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 183 | SignSampleData(&signature_blob, |
| 184 | {kUnittestPrivateKeyPath, kUnittestPrivateKey2Path}); |
Darin Petkov | d7061ab | 2010-10-06 14:37:09 -0700 | [diff] [blame] | 185 | |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 186 | // Either public key should pass the verification. |
Alex Deymo | 923d8fa | 2014-07-15 17:58:51 -0700 | [diff] [blame] | 187 | EXPECT_TRUE(PayloadVerifier::VerifySignature(signature_blob, |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 188 | kUnittestPublicKeyPath, |
| 189 | padded_hash_data_)); |
| 190 | EXPECT_TRUE(PayloadVerifier::VerifySignature(signature_blob, |
| 191 | kUnittestPublicKey2Path, |
| 192 | padded_hash_data_)); |
| 193 | } |
| 194 | |
| 195 | TEST_F(PayloadSignerTest, VerifySignatureTest) { |
Alex Vakulenko | 3f39d5c | 2015-10-13 09:27:13 -0700 | [diff] [blame] | 196 | brillo::Blob signature_blob; |
Alex Deymo | b552a68 | 2015-09-30 09:36:49 -0700 | [diff] [blame] | 197 | SignSampleData(&signature_blob, {kUnittestPrivateKeyPath}); |
| 198 | |
| 199 | EXPECT_TRUE(PayloadVerifier::VerifySignature(signature_blob, |
| 200 | kUnittestPublicKeyPath, |
| 201 | padded_hash_data_)); |
| 202 | // Passing the invalid key should fail the verification. |
| 203 | EXPECT_FALSE(PayloadVerifier::VerifySignature(signature_blob, |
| 204 | kUnittestPublicKey2Path, |
| 205 | padded_hash_data_)); |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Sen Jiang | 644f618 | 2015-10-06 16:45:57 -0700 | [diff] [blame] | 208 | TEST_F(PayloadSignerTest, SkipMetadataSignatureTest) { |
| 209 | string payload_path; |
| 210 | EXPECT_TRUE(utils::MakeTempFile("payload.XXXXXX", &payload_path, nullptr)); |
| 211 | ScopedPathUnlinker payload_path_unlinker(payload_path); |
| 212 | |
| 213 | PayloadGenerationConfig config; |
| 214 | config.major_version = kBrilloMajorPayloadVersion; |
| 215 | PayloadFile payload; |
| 216 | EXPECT_TRUE(payload.Init(config)); |
| 217 | uint64_t metadata_size; |
| 218 | EXPECT_TRUE( |
| 219 | payload.WritePayload(payload_path, "/dev/null", "", &metadata_size)); |
| 220 | const vector<int> sizes = {256}; |
| 221 | brillo::Blob unsigned_payload_hash, unsigned_metadata_hash; |
| 222 | EXPECT_TRUE(PayloadSigner::HashPayloadForSigning( |
| 223 | payload_path, sizes, &unsigned_payload_hash, &unsigned_metadata_hash)); |
| 224 | EXPECT_TRUE(payload.WritePayload( |
| 225 | payload_path, "/dev/null", kUnittestPrivateKeyPath, &metadata_size)); |
| 226 | brillo::Blob signed_payload_hash, signed_metadata_hash; |
| 227 | EXPECT_TRUE(PayloadSigner::HashPayloadForSigning( |
| 228 | payload_path, sizes, &signed_payload_hash, &signed_metadata_hash)); |
| 229 | EXPECT_EQ(unsigned_payload_hash, signed_payload_hash); |
| 230 | EXPECT_EQ(unsigned_metadata_hash, signed_metadata_hash); |
| 231 | } |
| 232 | |
| 233 | TEST_F(PayloadSignerTest, VerifySignedPayloadTest) { |
| 234 | string payload_path; |
| 235 | EXPECT_TRUE(utils::MakeTempFile("payload.XXXXXX", &payload_path, nullptr)); |
| 236 | ScopedPathUnlinker payload_path_unlinker(payload_path); |
| 237 | |
| 238 | PayloadGenerationConfig config; |
| 239 | config.major_version = kBrilloMajorPayloadVersion; |
| 240 | PayloadFile payload; |
| 241 | EXPECT_TRUE(payload.Init(config)); |
| 242 | uint64_t metadata_size; |
| 243 | EXPECT_TRUE(payload.WritePayload( |
| 244 | payload_path, "/dev/null", kUnittestPrivateKeyPath, &metadata_size)); |
| 245 | EXPECT_TRUE(PayloadSigner::VerifySignedPayload(payload_path, |
| 246 | kUnittestPublicKeyPath)); |
| 247 | } |
| 248 | |
Andrew de los Reyes | 0c44005 | 2010-08-20 11:25:54 -0700 | [diff] [blame] | 249 | } // namespace chromeos_update_engine |