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_RSA_KEYMASTER1_KEY_H_ 18 #define SYSTEM_KEYMASTER_RSA_KEYMASTER1_KEY_H_ 19 20 #include <openssl/rsa.h> 21 22 #include <keymaster/rsa_key_factory.h> 23 24 #include "keymaster1_engine.h" 25 #include "rsa_key.h" 26 27 namespace keymaster { 28 29 class SoftKeymasterContext; 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 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> decrypt_factory_; 68 std::unique_ptr<OperationFactory> verify_factory_; 69 std::unique_ptr<OperationFactory> encrypt_factory_; 70 }; 71 72 class RsaKeymaster1Key : public RsaKey { 73 public: 74 RsaKeymaster1Key(RSA* rsa_key, const AuthorizationSet& hw_enforced, 75 const AuthorizationSet& sw_enforced, keymaster_error_t* error) 76 : RsaKey(rsa_key, hw_enforced, sw_enforced, error) {} 77 }; 78 79 } // namespace keymaster 80 81 #endif // SYSTEM_KEYMASTER_RSA_KEYMASTER1_KEY_H_ 82
