1 /*
2 * Copyright (c) 2022 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 "hkshash_fuzzer.h"
16
17 #include "hks_api.h"
18 #include "hks_mem.h"
19 #include "hks_param.h"
20 #include "hks_type.h"
21
22 #include <securec.h>
23
24 #include "hks_fuzz_util.h"
25
26 constexpr int HASH_SIZE = 512;
27 namespace OHOS {
28 namespace Security {
29 namespace Hks {
30
DoSomethingInterestingWithMyAPI(uint8_t * data,size_t size)31 int DoSomethingInterestingWithMyAPI(uint8_t *data, size_t size)
32 {
33 if (data == nullptr || size < sizeof(uint32_t)) {
34 return -1;
35 }
36
37 uint32_t srcDataSize = *ReadData<uint32_t *>(data, size, sizeof(uint32_t));
38 if (size < srcDataSize) {
39 return -1;
40 }
41 struct HksBlob srcData = { srcDataSize, ReadData<uint8_t *>(data, size, srcDataSize) };
42 std::vector<uint8_t> hashBuf(HASH_SIZE);
43 struct HksBlob hash = { hashBuf.size(), hashBuf.data() };
44 WrapParamSet ps = ConstructHksParamSetFromFuzz(data, size);
45
46 [[maybe_unused]] int ret = HksHash(ps.s, &srcData, &hash);
47
48 return 0;
49 }
50 }}}
51
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)52 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
53 {
54 std::vector<uint8_t> v(data, data + size);
55 return OHOS::Security::Hks::DoSomethingInterestingWithMyAPI(v.data(), v.size());
56 }
57