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
16 #include "hksgetkeyparamset_fuzzer.h"
17
18 #include <securec.h>
19
20 #include "hks_api.h"
21 #include "hks_mem.h"
22 #include "hks_param.h"
23 #include "hks_type.h"
24
25 const int BLOB_SIZE = 10;
26 const int DOUBLE = 2;
27
28 namespace OHOS {
DoSomethingInterestingWithMyAPI(const uint8_t * data,size_t size)29 bool DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
30 {
31 if (data == nullptr || size <= (sizeof(struct HksParamSet) * DOUBLE + BLOB_SIZE)) {
32 return false;
33 }
34
35 uint8_t *myData = static_cast<uint8_t *>(HksMalloc(sizeof(uint8_t) * size));
36 if (myData == nullptr) {
37 return false;
38 }
39
40 (void)memcpy_s(myData, size, data, size);
41
42 struct HksBlob keyAlias = { BLOB_SIZE, myData };
43
44 int paramSize = (size - BLOB_SIZE) / DOUBLE;
45 struct HksParamSet *paramSetIn = reinterpret_cast<struct HksParamSet *>(myData + BLOB_SIZE);
46 paramSetIn->paramSetSize = paramSize;
47
48 struct HksParamSet *paramSetOut = reinterpret_cast<struct HksParamSet *>(myData + BLOB_SIZE + paramSize);
49 paramSetOut->paramSetSize = paramSize;
50
51 (void)HksGetKeyParamSet(&keyAlias, paramSetIn, paramSetOut);
52
53 HksFree(myData);
54 return true;
55 }
56 }
57
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)58 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
59 {
60 OHOS::DoSomethingInterestingWithMyAPI(data, size);
61 return 0;
62 }
63
64