1 /* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SYSTEM_KEYMASTER_OPERATION_H_ 18 #define SYSTEM_KEYMASTER_OPERATION_H_ 19 20 #include <assert.h> 21 #include <stdint.h> 22 #include <stdlib.h> 23 24 #include <keymaster/google_keymaster_utils.h> 25 #include <keymaster/keymaster_defs.h> 26 #include <keymaster/logger.h> 27 28 namespace keymaster { 29 30 /** 31 * Abstract base for all cryptographic operations. 32 */ 33 class Operation { 34 public: 35 Operation(keymaster_purpose_t purpose, const Logger& logger) 36 : purpose_(purpose), logger_(logger) {} 37 virtual ~Operation() {} 38 39 keymaster_purpose_t purpose() const { return purpose_; } 40 41 const Logger& logger() { return logger_; } 42 43 virtual keymaster_error_t Begin() = 0; 44 virtual keymaster_error_t Update(const Buffer& input, Buffer* output) = 0; 45 virtual keymaster_error_t Finish(const Buffer& signature, Buffer* output) = 0; 46 virtual keymaster_error_t Abort() = 0; 47 48 private: 49 const keymaster_purpose_t purpose_; 50 const Logger& logger_; 51 }; 52 53 } // namespace keymaster 54 55 #endif // SYSTEM_KEYMASTER_OPERATION_H_ 56
