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#ifndef SIGNATRUETOOLS_DATASOURCE_H
16#define SIGNATRUETOOLS_DATASOURCE_H
17
18#include "byte_buffer.h"
19#include "verify_hap_openssl_utils.h"
20
21namespace OHOS {
22namespace SignatureTools {
23
24class DataSource {
25public:
26    virtual bool HasRemaining() const = 0;
27    virtual int64_t Remaining() const = 0;
28    virtual void Reset() = 0;
29    virtual bool ReadDataAndDigestUpdate(const DigestParameter& digestParam, int32_t chunkSize) = 0;
30
31    virtual ~DataSource()
32    {
33    }
34};
35} // namespace SignatureTools
36} // namespace OHOS
37#endif // SIGNATRUETOOLS_DATASOURCE_H
38