1 /*
2 * Copyright 2021 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 <android-base/properties.h>
18 #include <cppbor_parse.h>
19 #include <gmock/gmock.h>
20 #include <gtest/gtest.h>
21 #include <keymaster/android_keymaster_utils.h>
22 #include <keymaster/logger.h>
23 #include <keymaster/remote_provisioning_utils.h>
24 #include <openssl/curve25519.h>
25 #include <remote_prov/remote_prov_utils.h>
26 #include <cstdint>
27 #include "cppbor.h"
28 #include "keymaster/cppcose/cppcose.h"
29
30 namespace aidl::android::hardware::security::keymint::remote_prov {
31 namespace {
32
33 using ::keymaster::KeymasterBlob;
34 using ::keymaster::validateAndExtractEekPubAndId;
35 using ::testing::ElementsAreArray;
36
TEST(RemoteProvUtilsTest,GenerateEekChainInvalidLength)37 TEST(RemoteProvUtilsTest, GenerateEekChainInvalidLength) {
38 ASSERT_FALSE(generateEekChain(1, /*eekId=*/{}));
39 }
40
TEST(RemoteProvUtilsTest,GenerateEekChain)41 TEST(RemoteProvUtilsTest, GenerateEekChain) {
42 bytevec kTestEekId = {'t', 'e', 's', 't', 'I', 'd', 0};
43 for (size_t length : {2, 3, 31}) {
44 auto get_eek_result = generateEekChain(length, kTestEekId);
45 ASSERT_TRUE(get_eek_result) << get_eek_result.message();
46
47 auto& [chain, pubkey, privkey] = *get_eek_result;
48
49 auto validation_result = validateAndExtractEekPubAndId(
50 /*testMode=*/true, KeymasterBlob(chain.data(), chain.size()));
51 ASSERT_TRUE(validation_result.isOk());
52
53 auto& [eekPub, eekId] = *validation_result;
54 EXPECT_THAT(eekId, ElementsAreArray(kTestEekId));
55 EXPECT_THAT(eekPub, ElementsAreArray(pubkey));
56 }
57 }
58
TEST(RemoteProvUtilsTest,GetProdEekChain)59 TEST(RemoteProvUtilsTest, GetProdEekChain) {
60 auto chain = getProdEekChain();
61
62 auto validation_result = validateAndExtractEekPubAndId(
63 /*testMode=*/false, KeymasterBlob(chain.data(), chain.size()));
64 ASSERT_TRUE(validation_result.isOk()) << "Error: " << validation_result.moveError();
65
66 auto& [eekPub, eekId] = *validation_result;
67
68 auto [geekCert, ignoredNewPos, error] =
69 cppbor::parse(kCoseEncodedGeekCert, sizeof(kCoseEncodedGeekCert));
70 ASSERT_NE(geekCert, nullptr) << "Error: " << error;
71 ASSERT_NE(geekCert->asArray(), nullptr);
72
73 auto& encodedGeekCoseKey = geekCert->asArray()->get(kCoseSign1Payload);
74 ASSERT_NE(encodedGeekCoseKey, nullptr);
75 ASSERT_NE(encodedGeekCoseKey->asBstr(), nullptr);
76
77 auto geek = CoseKey::parse(encodedGeekCoseKey->asBstr()->value());
78 ASSERT_TRUE(geek) << "Error: " << geek.message();
79
80 const std::vector<uint8_t> empty;
81 EXPECT_THAT(eekId, ElementsAreArray(geek->getBstrValue(CoseKey::KEY_ID).value_or(empty)));
82 EXPECT_THAT(eekPub, ElementsAreArray(geek->getBstrValue(CoseKey::PUBKEY_X).value_or(empty)));
83 }
84
TEST(RemoteProvUtilsTest,JsonEncodeCsr)85 TEST(RemoteProvUtilsTest, JsonEncodeCsr) {
86 cppbor::Array array;
87 array.add(1);
88
89 auto [json, error] = jsonEncodeCsrWithBuild(array);
90
91 ASSERT_TRUE(error.empty()) << error;
92
93 std::string expected = R"({"build_fingerprint":")" +
94 ::android::base::GetProperty("ro.build.fingerprint", /*default=*/"") +
95 R"(","csr":"gQE="})";
96
97 ASSERT_EQ(json, expected);
98 }
99
100 } // namespace
101 } // namespace aidl::android::hardware::security::keymint::remote_prov
102