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/*
* Copyright (C) 2019 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 "Keymaster4_1HidlTest.h"
#include <keymasterV4_1/authorization_set.h>
namespace android::hardware::keymaster::V4_1::test {
using std::string;
using EarlyBootKeyTest = Keymaster4_1HidlTest;
// Because VTS tests are run on fully-booted machines, we can only run negative tests for early boot
// keys, which cannot be created or used after /data is mounted. This is the only test we can run
// in the normal case. The positive test will have to be done by the Android system, when it
// creates/uses early boot keys during boot. It should fail to boot if the early boot key usage
// fails.
TEST_P(EarlyBootKeyTest, CannotCreateEarlyBootKeys) {
auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::EARLY_BOOT_ENDED);
CheckedDeleteKeyData(&aesKeyData);
CheckedDeleteKeyData(&hmacKeyData);
CheckedDeleteKeyData(&rsaKeyData);
CheckedDeleteKeyData(&ecdsaKeyData);
}
// This is a more comprenhensive test, but it can only be run on a machine which is still in early
// boot stage, which no proper Android device is by the time we can run VTS. To use this,
// un-disable it and modify vold to remove the call to earlyBootEnded(). Running the test will end
// early boot, so you'll have to reboot between runs.
TEST_P(EarlyBootKeyTest, DISABLED_FullTest) {
// Should be able to create keys, since early boot has not ended
auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::OK);
// TAG_EARLY_BOOT_ONLY should be in hw-enforced.
EXPECT_TRUE(contains(aesKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(contains(hmacKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(contains(rsaKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
EXPECT_TRUE(contains(ecdsaKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
// Should be able to use keys, since early boot has not ended
EXPECT_EQ(ErrorCode::OK, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::OK, UseEcdsaKey(ecdsaKeyData.blob));
// End early boot
Return<ErrorCode> earlyBootResult = keymaster().earlyBootEnded();
EXPECT_TRUE(earlyBootResult.isOk());
EXPECT_EQ(earlyBootResult, ErrorCode::OK);
// Should not be able to use already-created keys.
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseAesKey(aesKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseHmacKey(hmacKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseRsaKey(rsaKeyData.blob));
EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseEcdsaKey(ecdsaKeyData.blob));
CheckedDeleteKeyData(&aesKeyData);
CheckedDeleteKeyData(&hmacKeyData);
CheckedDeleteKeyData(&rsaKeyData);
CheckedDeleteKeyData(&ecdsaKeyData);
// Should not be able to create new keys
std::tie(aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData) =
CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::EARLY_BOOT_ENDED);
CheckedDeleteKeyData(&aesKeyData);
CheckedDeleteKeyData(&hmacKeyData);
CheckedDeleteKeyData(&rsaKeyData);
CheckedDeleteKeyData(&ecdsaKeyData);
}
INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(EarlyBootKeyTest);
} // namespace android::hardware::keymaster::V4_1::test
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