1 /*
2  * Copyright (c) 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 #include "random_impl.h"
16 
17 namespace OHOS {
18     namespace CryptoFramework {
RandomImpl(HcfRand * randObj)19         RandomImpl::RandomImpl(HcfRand *randObj)
20         {
21             randObj_ = randObj;
22         }
23 
~RandomImpl()24         RandomImpl::~RandomImpl()
25         {
26             HcfObjDestroy(this->randObj_);
27         }
28 
GetAlgName(int32_t * errCode)29         const char* RandomImpl::GetAlgName(int32_t* errCode)
30         {
31             if (randObj_ == nullptr) {
32                 LOGE("fail to get rand obj!");
33                 *errCode = HCF_ERR_MALLOC;
34                 return nullptr;
35             }
36             const char *algoName = randObj_->getAlgoName(randObj_);
37             *errCode = HCF_SUCCESS;
38             return algoName;
39         }
40 
GenerateRandom(int32_t numBytes,int32_t * errCode)41         HcfBlob RandomImpl::GenerateRandom(int32_t numBytes, int32_t* errCode)
42         {
43             HcfBlob randBlob = { .data = nullptr, .len = 0};
44             if (randObj_ == nullptr) {
45                 *errCode = HCF_ERR_MALLOC;
46                 LOGE("fail to get rand obj!");
47                 return randBlob;
48             }
49             HcfResult res = randObj_->generateRandom(randObj_, numBytes, &randBlob);
50             if (res != HCF_SUCCESS) {
51                 LOGE("generateRandom failed!");
52             }
53             *errCode = static_cast<int32_t>(res);
54             return randBlob;
55         }
56 
SetSeed(HcfBlob * seed,int32_t * errCode)57         void RandomImpl::SetSeed(HcfBlob *seed, int32_t* errCode)
58         {
59             if (randObj_ == nullptr) {
60                 *errCode = HCF_ERR_MALLOC;
61                 LOGE("fail to get rand obj!");
62                 return;
63             }
64             HcfResult res = randObj_->setSeed(randObj_, seed);
65             if (res != HCF_SUCCESS) {
66                 LOGE("set seed failed.");
67             }
68             *errCode = static_cast<int32_t>(res);
69         }
70     }
71 }