1 /* 2 * Copyright (C) 2021-2022 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 HAP_DATASOURCE_H 16 #define HAP_DATASOURCE_H 17 18 #include "common/hap_byte_buffer.h" 19 #include "util/hap_verify_openssl_utils.h" 20 21 namespace OHOS { 22 namespace Security { 23 namespace Verify { 24 class DataSource { 25 public: ~DataSource()26 virtual ~DataSource() {} 27 virtual bool HasRemaining() const = 0; 28 virtual long long Remaining() const = 0; 29 virtual void Reset() = 0; 30 virtual bool ReadDataAndDigestUpdate(const DigestParameter& digestParam, int chunkSize) = 0; 31 }; 32 } // namespace Verify 33 } // namespace Security 34 } // namespace OHOS 35 #endif // HAP_DATASOURCE_H 36