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 #pragma once 18 19 #include <openssl/ecdsa.h> 20 21 #include <hardware/keymaster1.h> 22 #include <keymaster/android_keymaster_utils.h> 23 #include <keymaster/contexts/soft_keymaster_context.h> 24 #include <keymaster/km_openssl/ec_key.h> 25 #include <keymaster/km_openssl/ec_key_factory.h> 26 #include <keymaster/logger.h> 27 28 #include "keymaster1_engine.h" 29 30 namespace keymaster { 31 32 /** 33 * EcdsaKeymaster1KeyFactory is a KeyFactory that creates and loads keys which are actually backed 34 * by a hardware keymaster1 module, but which does not support all keymaster1 digests. During 35 * generation or import any unsupported digests in the key description are silently replaced with 36 * KM_DIGEST_NONE. 37 */ 38 class EcdsaKeymaster1KeyFactory : public EcKeyFactory { 39 public: 40 EcdsaKeymaster1KeyFactory(const SoftwareKeyBlobMaker& blob_maker, 41 const KeymasterContext& context, // 42 const Keymaster1Engine* engine); 43 44 keymaster_error_t GenerateKey(const AuthorizationSet& key_description, 45 UniquePtr<Key> attest_key, // 46 const KeymasterBlob& issuer_subject, // 47 KeymasterKeyBlob* key_blob, // 48 AuthorizationSet* hw_enforced, // 49 AuthorizationSet* sw_enforced, 50 CertificateChain* cert_chain) const override; 51 52 keymaster_error_t ImportKey(const AuthorizationSet& key_description, 53 keymaster_key_format_t input_key_material_format, 54 const KeymasterKeyBlob& input_key_material, 55 UniquePtr<Key> attest_key, // 56 const KeymasterBlob& issuer_subject, 57 KeymasterKeyBlob* output_key_blob, // 58 AuthorizationSet* hw_enforced, // 59 AuthorizationSet* sw_enforced, 60 CertificateChain* cert_chain) const override; 61 62 keymaster_error_t LoadKey(KeymasterKeyBlob&& key_material, 63 const AuthorizationSet& additional_params, 64 AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced, 65 UniquePtr<Key>* key) const override; 66 67 OperationFactory* GetOperationFactory(keymaster_purpose_t purpose) const override; 68 69 private: 70 const Keymaster1Engine* engine_; 71 72 std::unique_ptr<OperationFactory> sign_factory_; 73 std::unique_ptr<OperationFactory> verify_factory_; 74 }; 75 76 class EcdsaKeymaster1Key : public EcKey { 77 public: EcdsaKeymaster1Key(EC_KEY * ecdsa_key,AuthorizationSet && hw_enforced,AuthorizationSet && sw_enforced,const KeyFactory * key_factory)78 EcdsaKeymaster1Key(EC_KEY* ecdsa_key, AuthorizationSet&& hw_enforced, 79 AuthorizationSet&& sw_enforced, const KeyFactory* key_factory) 80 : EcKey(ecdsa_key, move(hw_enforced), move(sw_enforced), key_factory) {} 81 }; 82 83 } // namespace keymaster 84