payload_signer_unittest.cc revision aea4c1cea20dda7ae7e85fc8924a2d784f70d806
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// 16 17#include "update_engine/payload_generator/payload_signer.h" 18 19#include <string> 20#include <vector> 21 22#include <base/logging.h> 23#include <gtest/gtest.h> 24 25#include "update_engine/payload_verifier.h" 26#include "update_engine/update_metadata.pb.h" 27#include "update_engine/utils.h" 28 29using std::string; 30using std::vector; 31 32// Note: the test key was generated with the following command: 33// openssl genrsa -out unittest_key.pem 2048 34// The public-key version is created by the build system. 35 36namespace chromeos_update_engine { 37 38const char* kUnittestPrivateKeyPath = "unittest_key.pem"; 39const char* kUnittestPublicKeyPath = "unittest_key.pub.pem"; 40const char* kUnittestPrivateKey2Path = "unittest_key2.pem"; 41const char* kUnittestPublicKey2Path = "unittest_key2.pub.pem"; 42 43// Some data and its corresponding hash and signature: 44const char kDataToSign[] = "This is some data to sign."; 45 46// Generated by: 47// echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | 48// hexdump -v -e '" " 8/1 "0x%02x, " "\n"' 49const uint8_t kDataHash[] = { 50 0x7a, 0x07, 0xa6, 0x44, 0x08, 0x86, 0x20, 0xa6, 51 0xc1, 0xf8, 0xd9, 0x02, 0x05, 0x63, 0x0d, 0xb7, 52 0xfc, 0x2b, 0xa0, 0xa9, 0x7c, 0x9d, 0x1d, 0x8c, 53 0x01, 0xf5, 0x78, 0x6d, 0xc5, 0x11, 0xb4, 0x06 54}; 55 56// Generated with openssl 1.0, which at the time of this writing, you need 57// to download and install yourself. Here's my command: 58// echo -n 'This is some data to sign.' | openssl dgst -sha256 -binary | 59// ~/local/bin/openssl pkeyutl -sign -inkey unittest_key.pem -pkeyopt 60// digest:sha256 | hexdump -v -e '" " 8/1 "0x%02x, " "\n"' 61const uint8_t kDataSignature[] = { 62 0x9f, 0x86, 0x25, 0x8b, 0xf3, 0xcc, 0xe3, 0x95, 63 0x5f, 0x45, 0x83, 0xb2, 0x66, 0xf0, 0x2a, 0xcf, 64 0xb7, 0xaa, 0x52, 0x25, 0x7a, 0xdd, 0x9d, 0x65, 65 0xe5, 0xd6, 0x02, 0x4b, 0x37, 0x99, 0x53, 0x06, 66 0xc2, 0xc9, 0x37, 0x36, 0x25, 0x62, 0x09, 0x4f, 67 0x6b, 0x22, 0xf8, 0xb3, 0x89, 0x14, 0x98, 0x1a, 68 0xbc, 0x30, 0x90, 0x4a, 0x43, 0xf5, 0xea, 0x2e, 69 0xf0, 0xa4, 0xba, 0xc3, 0xa7, 0xa3, 0x44, 0x70, 70 0xd6, 0xc4, 0x89, 0xd8, 0x45, 0x71, 0xbb, 0xee, 71 0x59, 0x87, 0x3d, 0xd5, 0xe5, 0x40, 0x22, 0x3d, 72 0x73, 0x7e, 0x2a, 0x58, 0x93, 0x8e, 0xcb, 0x9c, 73 0xf2, 0xbb, 0x4a, 0xc9, 0xd2, 0x2c, 0x52, 0x42, 74 0xb0, 0xd1, 0x13, 0x22, 0xa4, 0x78, 0xc7, 0xc6, 75 0x3e, 0xf1, 0xdc, 0x4c, 0x7b, 0x2d, 0x40, 0xda, 76 0x58, 0xac, 0x4a, 0x11, 0x96, 0x3d, 0xa0, 0x01, 77 0xf6, 0x96, 0x74, 0xf6, 0x6c, 0x0c, 0x49, 0x69, 78 0x4e, 0xc1, 0x7e, 0x9f, 0x2a, 0x42, 0xdd, 0x15, 79 0x6b, 0x37, 0x2e, 0x3a, 0xa7, 0xa7, 0x6d, 0x91, 80 0x13, 0xe8, 0x59, 0xde, 0xfe, 0x99, 0x07, 0xd9, 81 0x34, 0x0f, 0x17, 0xb3, 0x05, 0x4c, 0xd2, 0xc6, 82 0x82, 0xb7, 0x38, 0x36, 0x63, 0x1d, 0x9e, 0x21, 83 0xa6, 0x32, 0xef, 0xf1, 0x65, 0xe6, 0xed, 0x95, 84 0x25, 0x9b, 0x61, 0xe0, 0xba, 0x86, 0xa1, 0x7f, 85 0xf8, 0xa5, 0x4a, 0x32, 0x1f, 0x15, 0x20, 0x8a, 86 0x41, 0xc5, 0xb0, 0xd9, 0x4a, 0xda, 0x85, 0xf3, 87 0xdc, 0xa0, 0x98, 0x5d, 0x1d, 0x18, 0x9d, 0x2e, 88 0x42, 0xea, 0x69, 0x13, 0x74, 0x3c, 0x74, 0xf7, 89 0x6d, 0x43, 0xb0, 0x63, 0x90, 0xdb, 0x04, 0xd5, 90 0x05, 0xc9, 0x73, 0x1f, 0x6c, 0xd6, 0xfa, 0x46, 91 0x4e, 0x0f, 0x33, 0x58, 0x5b, 0x0d, 0x1b, 0x55, 92 0x39, 0xb9, 0x0f, 0x43, 0x37, 0xc0, 0x06, 0x0c, 93 0x29, 0x93, 0x43, 0xc7, 0x43, 0xb9, 0xab, 0x7d 94}; 95 96namespace { 97void SignSampleData(chromeos::Blob* out_signature_blob) { 98 string data_path; 99 ASSERT_TRUE( 100 utils::MakeTempFile("data.XXXXXX", &data_path, nullptr)); 101 ScopedPathUnlinker data_path_unlinker(data_path); 102 ASSERT_TRUE(utils::WriteFile(data_path.c_str(), 103 kDataToSign, 104 strlen(kDataToSign))); 105 uint64_t length = 0; 106 EXPECT_TRUE(PayloadSigner::SignatureBlobLength( 107 vector<string> (1, kUnittestPrivateKeyPath), 108 &length)); 109 EXPECT_GT(length, 0); 110 EXPECT_TRUE(PayloadSigner::SignPayload( 111 data_path, 112 vector<string>(1, kUnittestPrivateKeyPath), 113 out_signature_blob)); 114 EXPECT_EQ(length, out_signature_blob->size()); 115} 116} // namespace 117 118TEST(PayloadSignerTest, SimpleTest) { 119 chromeos::Blob signature_blob; 120 SignSampleData(&signature_blob); 121 122 // Check the signature itself 123 Signatures signatures; 124 EXPECT_TRUE(signatures.ParseFromArray(signature_blob.data(), 125 signature_blob.size())); 126 EXPECT_EQ(1, signatures.signatures_size()); 127 const Signatures_Signature& signature = signatures.signatures(0); 128 EXPECT_EQ(kSignatureMessageOriginalVersion, signature.version()); 129 const string sig_data = signature.data(); 130 ASSERT_EQ(arraysize(kDataSignature), sig_data.size()); 131 for (size_t i = 0; i < arraysize(kDataSignature); i++) { 132 EXPECT_EQ(kDataSignature[i], static_cast<uint8_t>(sig_data[i])); 133 } 134} 135 136TEST(PayloadSignerTest, VerifySignatureTest) { 137 chromeos::Blob signature_blob; 138 SignSampleData(&signature_blob); 139 140 chromeos::Blob hash_data; 141 EXPECT_TRUE(PayloadVerifier::VerifySignature(signature_blob, 142 kUnittestPublicKeyPath, 143 &hash_data)); 144 chromeos::Blob padded_hash_data(std::begin(kDataHash), std::end(kDataHash)); 145 PayloadVerifier::PadRSA2048SHA256Hash(&padded_hash_data); 146 ASSERT_EQ(padded_hash_data.size(), hash_data.size()); 147 for (size_t i = 0; i < padded_hash_data.size(); i++) { 148 EXPECT_EQ(padded_hash_data[i], hash_data[i]); 149 } 150} 151 152} // namespace chromeos_update_engine 153