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 <utility> 20 21 #include <openssl/rsa.h> 22 23 #include <keymaster/km_openssl/rsa_key.h> 24 #include <keymaster/km_openssl/rsa_key_factory.h> 25 #include <keymaster/operation.h> 26 27 #include "keymaster1_engine.h" 28 29 namespace keymaster { 30 31 /** 32 * RsaKeymaster1KeyFactory is a KeyFactory that creates and loads keys which are actually backed by 33 * a hardware keymaster1 module, but which does not support all keymaster1 digests. If unsupported 34 * digests are found during generation or import, KM_DIGEST_NONE is added to the key description, 35 * then the operations handle the unsupported digests in software. 36 * 37 * If unsupported digests are requested and KM_PAD_RSA_PSS or KM_PAD_RSA_OAEP is also requested, but 38 * KM_PAD_NONE is not present KM_PAD_NONE will be added to the description, to allow for 39 * software padding as well as software digesting. 40 */ 41 class RsaKeymaster1KeyFactory : public RsaKeyFactory { 42 public: 43 RsaKeymaster1KeyFactory(const SoftwareKeyBlobMaker& blob_maker, const KeymasterContext& context, 44 const Keymaster1Engine* engine); 45 46 keymaster_error_t GenerateKey(const AuthorizationSet& key_description, 47 UniquePtr<Key> attest_key, // 48 const KeymasterBlob& issuer_subject, // 49 KeymasterKeyBlob* key_blob, 50 AuthorizationSet* hw_enforced, // 51 AuthorizationSet* sw_enforced, 52 CertificateChain* cert_chain) const override; 53 54 keymaster_error_t ImportKey(const AuthorizationSet& key_description, 55 keymaster_key_format_t input_key_material_format, 56 const KeymasterKeyBlob& input_key_material, 57 UniquePtr<Key> attest_key, // 58 const KeymasterBlob& issuer_subject, 59 KeymasterKeyBlob* output_key_blob, 60 AuthorizationSet* hw_enforced, // 61 AuthorizationSet* sw_enforced, 62 CertificateChain* cert_chain) const override; 63 64 keymaster_error_t LoadKey(KeymasterKeyBlob&& key_material, 65 const AuthorizationSet& additional_params, 66 AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced, 67 UniquePtr<Key>* key) const override; 68 69 OperationFactory* GetOperationFactory(keymaster_purpose_t purpose) const override; 70 71 private: 72 const Keymaster1Engine* engine_; 73 74 std::unique_ptr<OperationFactory> sign_factory_; 75 std::unique_ptr<OperationFactory> decrypt_factory_; 76 std::unique_ptr<OperationFactory> verify_factory_; 77 std::unique_ptr<OperationFactory> encrypt_factory_; 78 }; 79 80 class RsaKeymaster1Key : public RsaKey { 81 public: RsaKeymaster1Key(RSA * rsa_key,AuthorizationSet && hw_enforced,AuthorizationSet && sw_enforced,const KeyFactory * key_factory)82 RsaKeymaster1Key(RSA* rsa_key, AuthorizationSet&& hw_enforced, AuthorizationSet&& sw_enforced, 83 const KeyFactory* key_factory) 84 : RsaKey(rsa_key, std::move(hw_enforced), std::move(sw_enforced), key_factory) {} 85 }; 86 87 } // namespace keymaster 88