1 /*
2  * Copyright (c) 2022-2023 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 "b_encryption/b_encryption.h"
17 
18 namespace OHOS::FileManagement::Backup::BEncryption {
CalculateChksum(const char * byteBlock,int blockSize)19 unsigned int CalculateChksum(const char *byteBlock, int blockSize)
20 {
21     unsigned int chksum = 0U;
22     for (int i = 0; i < blockSize; ++i) {
23         chksum += 0xFF & *(byteBlock + i);
24     }
25     return chksum;
26 }
27 } // namespace OHOS::FileManagement::Backup::BEncryption