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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#include <string>
#include <utils/String16.h>
#include <keymaster/logger.h>
#include <keystore/keystore_attestation_id.h>
#include <keystore/KeyAttestationApplicationId.h>
#include <keystore/KeyAttestationPackageInfo.h>
#include <keystore/Signature.h>
using ::android::String16;
using ::android::security::KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE;
using ::android::security::keymaster::KeyAttestationApplicationId;
using ::android::security::keymaster::KeyAttestationPackageInfo;
using std::vector;
namespace keystore {
namespace test {
namespace {
constexpr const char* kDummyPackageName = "DummyPackage";
constexpr const char* kLongPackageName =
"a.long.package.name"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
constexpr const char* kReasonablePackageName =
"a.reasonable.length.package.name"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
constexpr const size_t kTooManyPackages = 4;
// Signatures should be 32 bytes
constexpr const uint8_t kDummySignature[32] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f};
constexpr const size_t kTooManySignatures = 35;
} // namespace
using ::android::content::pm::Signature;
using ::android::security::build_attestation_application_id;
std::optional<KeyAttestationPackageInfo>
make_package_info_with_signatures(const char* package_name,
KeyAttestationPackageInfo::SignaturesVector signatures) {
return std::make_optional<KeyAttestationPackageInfo>(
String16(package_name), 1 /* version code */,
std::make_shared<KeyAttestationPackageInfo::SignaturesVector>(std::move(signatures)));
}
std::optional<KeyAttestationPackageInfo> make_package_info(const char* package_name) {
return make_package_info_with_signatures(package_name,
KeyAttestationPackageInfo::SignaturesVector());
}
TEST(AaidTruncationTest, shortPackageInfoTest) {
KeyAttestationApplicationId app_id(make_package_info(kDummyPackageName));
auto result = build_attestation_application_id(app_id);
ASSERT_TRUE(result.isOk());
std::vector<uint8_t>& encoded_app_id = result;
ASSERT_LT(encoded_app_id.size(), KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE);
}
TEST(AaidTruncationTest, tooLongPackageNameTest) {
KeyAttestationApplicationId app_id(make_package_info(kLongPackageName));
auto result = build_attestation_application_id(app_id);
ASSERT_TRUE(result.isOk());
std::vector<uint8_t>& encoded_app_id = result;
ASSERT_LT(encoded_app_id.size(), KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE);
}
TEST(AaidTruncationTest, tooManySignaturesTest) {
std::vector<uint8_t> dummy_sig_data(kDummySignature, kDummySignature + 32);
KeyAttestationPackageInfo::SignaturesVector signatures;
// Add 35 signatures which will surely exceed the 1K limit.
for (size_t i = 0; i < kTooManySignatures; ++i) {
signatures.push_back(std::make_optional<Signature>(dummy_sig_data));
}
KeyAttestationApplicationId app_id(
make_package_info_with_signatures(kDummyPackageName, std::move(signatures)));
auto result = build_attestation_application_id(app_id);
ASSERT_TRUE(result.isOk());
std::vector<uint8_t>& encoded_app_id = result;
ASSERT_LT(encoded_app_id.size(), KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE);
}
TEST(AaidTruncationTest, combinedPackagesAndSignaturesTest) {
std::vector<uint8_t> dummy_sig_data(kDummySignature, kDummySignature + 32);
KeyAttestationApplicationId::PackageInfoVector packages;
for (size_t i = 0; i < kTooManyPackages; ++i) {
KeyAttestationPackageInfo::SignaturesVector signatures;
// Add a few signatures for each package
for (int j = 0; j < 3; ++j) {
signatures.push_back(std::make_optional<Signature>(dummy_sig_data));
}
packages.push_back(
make_package_info_with_signatures(kReasonablePackageName, std::move(signatures)));
}
KeyAttestationApplicationId app_id(std::move(packages));
auto result = build_attestation_application_id(app_id);
ASSERT_TRUE(result.isOk());
std::vector<uint8_t>& encoded_app_id = result;
ASSERT_LT(encoded_app_id.size(), KEY_ATTESTATION_APPLICATION_ID_MAX_SIZE);
}
} // namespace test
} // namespace keystore
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