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