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_GOOGLE_SOFT_KEYMASTER_H_ 18 #define SYSTEM_KEYMASTER_GOOGLE_SOFT_KEYMASTER_H_ 19 20 #include <keymaster/google_keymaster.h> 21 22 namespace keymaster { 23 24 class GoogleSoftKeymaster : public GoogleKeymaster { 25 public: 26 GoogleSoftKeymaster(size_t operation_table_size, Logger* logger) 27 : GoogleKeymaster(operation_table_size, logger) { 28 root_of_trust.tag = KM_TAG_ROOT_OF_TRUST; 29 root_of_trust.blob.data = reinterpret_cast<const uint8_t*>("SW"); 30 root_of_trust.blob.data_length = 2; 31 } 32 bool is_enforced(keymaster_tag_t /* tag */) { return false; } 33 keymaster_key_origin_t origin() { return KM_ORIGIN_SOFTWARE; } 34 35 private: 36 static uint8_t master_key_[]; 37 38 keymaster_key_blob_t MasterKey() { 39 keymaster_key_blob_t blob; 40 blob.key_material = master_key_; 41 blob.key_material_size = 16; 42 return blob; 43 } 44 45 void GenerateNonce(uint8_t* nonce, size_t length) { 46 for (size_t i = 0; i < length; ++i) 47 nonce[i] = 0; 48 } 49 50 keymaster_key_param_t RootOfTrustTag() { return root_of_trust; } 51 52 keymaster_key_param_t root_of_trust; 53 }; 54 55 uint8_t GoogleSoftKeymaster::master_key_[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 56 57 } // namespace 58 59 #endif // SYSTEM_KEYMASTER_GOOGLE_SOFT_KEYMASTER_H_ 60
