1 /*
2 * Copyright (c) 2024 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 "hksvalidatecertchain_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 CERT_SIZE = 4096;
28 constexpr int CERT_COUNT = 4;
29
30 namespace OHOS {
31 namespace Security {
32 namespace Hks {
33
DoSomethingInterestingWithMyAPI(uint8_t *data, size_t size)34 int DoSomethingInterestingWithMyAPI(uint8_t *data, size_t size)
35 {
36 if (data == nullptr) {
37 return -1;
38 }
39 std::vector<uint8_t> certRootBuffer(CERT_SIZE);
40 std::vector<uint8_t> certCaBuffer(CERT_SIZE);
41 std::vector<uint8_t> certDeviceBuffer(CERT_SIZE);
42 std::vector<uint8_t> certAppBuffer(CERT_SIZE);
43 struct HksBlob resultCerts[CERT_COUNT] = {
44 { CERT_SIZE, certRootBuffer.data() },
45 { CERT_SIZE, certCaBuffer.data() },
46 { CERT_SIZE, certDeviceBuffer.data() },
47 { CERT_SIZE, certAppBuffer.data() },
48 };
49 struct HksCertChain certChain = {
50 .certs = resultCerts,
51 .certsCount = CERT_COUNT
52 };
53 WrapParamSet psOut = ConstructHksParamSetFromFuzz(data, size);
54 [[maybe_unused]] int ret = HksValidateCertChain(&certChain, psOut.s);
55 return 0;
56 }
57 }}}
58
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)59 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
60 {
61 std::vector<uint8_t> v(data, data + size);
62 return OHOS::Security::Hks::DoSomethingInterestingWithMyAPI(v.data(), v.size());
63 }
64