1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "hksanonattestkey_fuzzer.h"
16
17 #include <securec.h>
18 #include <vector>
19
20 #include "hks_api.h"
21 #include "hks_mem.h"
22 #include "hks_param.h"
23 #include "hks_type.h"
24
25 #include "hks_fuzz_util.h"
26
27 constexpr int ALIAS_SIZE = 10;
28 constexpr int CERT_SIZE = 4096;
29 constexpr int CERT_COUNT = 4;
30
31 namespace OHOS {
32 namespace Security {
33 namespace Hks {
34
DoSomethingInterestingWithMyAPI(uint8_t * data,size_t size)35 int DoSomethingInterestingWithMyAPI(uint8_t *data, size_t size)
36 {
37 if (data == nullptr || size < ALIAS_SIZE) {
38 return -1;
39 }
40 struct HksBlob keyAlias = { ALIAS_SIZE, ReadData<uint8_t *>(data, size, ALIAS_SIZE) };
41 std::vector<uint8_t> certRootBuffer(CERT_SIZE);
42 std::vector<uint8_t> certCaBuffer(CERT_SIZE);
43 std::vector<uint8_t> certDeviceBuffer(CERT_SIZE);
44 std::vector<uint8_t> certAppBuffer(CERT_SIZE);
45 struct HksBlob resultCerts[CERT_COUNT] = {
46 { CERT_SIZE, certRootBuffer.data() },
47 { CERT_SIZE, certCaBuffer.data() },
48 { CERT_SIZE, certDeviceBuffer.data() },
49 { CERT_SIZE, certAppBuffer.data() },
50 };
51 struct HksCertChain certChain = {
52 .certs = resultCerts,
53 .certsCount = CERT_COUNT
54 };
55 WrapParamSet ps = ConstructHksParamSetFromFuzz(data, size);
56 [[maybe_unused]] int ret = HksAnonAttestKey(&keyAlias, ps.s, &certChain);
57 return 0;
58 }
59 }}}
60
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)61 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
62 {
63 std::vector<uint8_t> v(data, data + size);
64 return OHOS::Security::Hks::DoSomethingInterestingWithMyAPI(v.data(), v.size());
65 }
66