1 /* 2 * Copyright 2015 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_EC_KEYMASTER1_KEY_H_ 18 #define SYSTEM_KEYMASTER_EC_KEYMASTER1_KEY_H_ 19 20 #include <openssl/ecdsa.h> 21 22 #include <hardware/keymaster1.h> 23 #include <keymaster/android_keymaster_utils.h> 24 #include <keymaster/logger.h> 25 #include <keymaster/ec_key_factory.h> 26 #include <keymaster/soft_keymaster_context.h> 27 28 #include "ec_key.h" 29 #include "keymaster1_engine.h" 30 31 namespace keymaster { 32 33 class SoftKeymasterContext; 34 35 /** 36 * EcdsaKeymaster1KeyFactory is a KeyFactory that creates and loads keys which are actually backed 37 * by a hardware keymaster1 module, but which does not support all keymaster1 digests. During 38 * generation or import any unsupported digests in the key description are silently replaced with 39 * KM_DIGEST_NONE. 40 */ 41 class EcdsaKeymaster1KeyFactory : public EcKeyFactory { 42 public: 43 EcdsaKeymaster1KeyFactory(const SoftKeymasterContext* context, const Keymaster1Engine* engine); 44 45 keymaster_error_t GenerateKey(const AuthorizationSet& key_description, 46 KeymasterKeyBlob* key_blob, AuthorizationSet* hw_enforced, 47 AuthorizationSet* sw_enforced) const override; 48 49 keymaster_error_t ImportKey(const AuthorizationSet& key_description, 50 keymaster_key_format_t input_key_material_format, 51 const KeymasterKeyBlob& input_key_material, 52 KeymasterKeyBlob* output_key_blob, AuthorizationSet* hw_enforced, 53 AuthorizationSet* sw_enforced) const override; 54 55 keymaster_error_t LoadKey(const KeymasterKeyBlob& key_material, 56 const AuthorizationSet& additional_params, 57 const AuthorizationSet& hw_enforced, 58 const AuthorizationSet& sw_enforced, 59 UniquePtr<Key>* key) const override; 60 61 OperationFactory* GetOperationFactory(keymaster_purpose_t purpose) const override; 62 63 private: 64 const Keymaster1Engine* engine_; 65 66 std::unique_ptr<OperationFactory> sign_factory_; 67 std::unique_ptr<OperationFactory> verify_factory_; 68 }; 69 70 class EcdsaKeymaster1Key : public EcKey { 71 public: 72 EcdsaKeymaster1Key(EC_KEY* ecdsa_key, const AuthorizationSet& hw_enforced, 73 const AuthorizationSet& sw_enforced, const Keymaster1Engine* engine, 74 keymaster_error_t* error); 75 76 private: 77 const Keymaster1Engine* engine_; 78 }; 79 80 } // namespace keymaster 81 82 #endif // SYSTEM_KEYMASTER_ECDSA_KEYMASTER1_KEY_H_ 83