1 /*
2 * Copyright (C) 2023-2024 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
16 #include "dhkeyutil_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <string>
21 #include "securec.h"
22
23 #include "dh_key_util.h"
24 #include "blob.h"
25 #include "detailed_dh_key_params.h"
26 #include "result.h"
27
28 using namespace std;
29
30 namespace OHOS {
31 static bool g_testFlag = true;
32 constexpr int32_t HCF_DH_PLEN_2048 = 2048;
TestDhKey(void)33 static void TestDhKey(void)
34 {
35 HcfDhCommParamsSpec *returnCommonParamSpec = nullptr;
36 int32_t res = HcfDhKeyUtilCreate(3072, 512, &returnCommonParamSpec);
37 if (res != HCF_SUCCESS) {
38 return;
39 }
40 FreeDhCommParamsSpec(returnCommonParamSpec);
41 }
42
DhKeyUtilFuzzTest(const uint8_t * data,size_t size)43 bool DhKeyUtilFuzzTest(const uint8_t* data, size_t size)
44 {
45 if (size < (sizeof(int32_t) / sizeof(uint8_t))) {
46 return false;
47 }
48 if (g_testFlag) {
49 TestDhKey();
50 g_testFlag = false;
51 }
52 HcfDhCommParamsSpec *returnCommonParamSpec = nullptr;
53 int32_t skLen = 0;
54 const int32_t int32Size = sizeof(int32_t);
55 (void)memcpy_s(&skLen, int32Size, data, int32Size);
56 HcfResult res = HcfDhKeyUtilCreate(HCF_DH_PLEN_2048, skLen, &returnCommonParamSpec);
57 if (res != HCF_SUCCESS) {
58 return false;
59 }
60 FreeDhCommParamsSpec(returnCommonParamSpec);
61 return true;
62 }
63 }
64
65 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)66 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
67 {
68 /* Run your code on data */
69 OHOS::DhKeyUtilFuzzTest(data, size);
70 return 0;
71 }
72