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
16 #include "huks_hdi_fuzzer.h"
17 #include "huks_hdi_passthrough_adapter.h"
18 #include "huks_hdi_fuzz_common.h"
19
20 #include <cstddef>
21 #include <cstdint>
22 #include <securec.h>
23
24 struct HuksHdi *g_instance = nullptr;
25
26 #define INIT_KEY_ALIAS_SIZE 27
27
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) + INIT_KEY_ALIAS_SIZE)) {
31 return false;
32 }
33 uint8_t *myData = static_cast<uint8_t *>(malloc(sizeof(uint8_t) * size));
34 if (myData == nullptr) {
35 return false;
36 }
37 (void)memcpy_s(myData, size, data, size);
38 struct HksBlob keyAlias = { INIT_KEY_ALIAS_SIZE, myData };
39 struct HksParamSet *paramSetIn = reinterpret_cast<struct HksParamSet *>(myData + INIT_KEY_ALIAS_SIZE);
40 paramSetIn->paramSetSize = size - INIT_KEY_ALIAS_SIZE;
41 #ifdef HUKS_HDI_SOFTWARE
42 if (HuksFreshParamSet(paramSetIn, false) != 0) {
43 free(myData);
44 return false;
45 }
46 #endif
47 uint8_t keyBuff[1] = {0};
48 struct HksBlob key = {
49 .data = keyBuff,
50 .size = sizeof(keyBuff)
51 };
52 uint8_t buffer[1024];
53 struct HksBlob out = {
54 .data = buffer,
55 .size = sizeof(buffer)
56 };
57 (void)g_instance->HuksHdiGenerateKey(&keyAlias, paramSetIn, &key, &out);
58 free(myData);
59 return true;
60 }
61
62 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int32_t LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
64 {
65 if (InitHuksCoreEngine(&g_instance) != 0) {
66 return -1;
67 }
68 DoSomethingInterestingWithMyAPI(data, size);
69 return 0;
70 }
71