1 /*
2 * Copyright (c) 2024-2024 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 "hks_fuzz_util.h"
17
18 namespace OHOS {
19 namespace Security {
20 namespace Hks {
ConstructHksParams(uint8_t * & data,size_t & size)21 std::vector<HksParam> ConstructHksParams(uint8_t *&data, size_t &size)
22 {
23 std::vector<HksParam> params {};
24 while (size >= sizeof(HksParam)) {
25 HksParam *p = ReadData<HksParam *>(data, size, sizeof(HksParam));
26 if (GetTagType(static_cast<HksTag>(p->tag)) != HKS_TAG_TYPE_BYTES) {
27 params.emplace_back(*p);
28 continue;
29 }
30 if (size < p->blob.size) {
31 continue;
32 }
33 p->blob.data = ReadData<uint8_t *>(data, size, p->blob.size);
34 params.emplace_back(*p);
35 }
36 return params;
37 }
38
ConstructHksParamSetFromFuzz(uint8_t * & data,size_t & size)39 WrapParamSet ConstructHksParamSetFromFuzz(uint8_t *&data, size_t &size)
40 {
41 auto params = ConstructHksParams(data, size);
42 WrapParamSet ps {};
43 int32_t ret = HksInitParamSet(&ps.s);
44 if (ret != HKS_SUCCESS) {
45 return {};
46 }
47 if (!params.empty()) {
48 ret = HksAddParams(ps.s, params.data(), params.size());
49 if (ret != HKS_SUCCESS) {
50 return {};
51 }
52 }
53 ret = HksBuildParamSet(&ps.s);
54 if (ret != HKS_SUCCESS) {
55 return {};
56 }
57 return ps;
58 }
59 }}}