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