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      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_KEYMASTER0_KEY_H_
     18 #define SYSTEM_KEYMASTER_EC_KEYMASTER0_KEY_H_
     19 
     20 #include <openssl/ec_key.h>
     21 
     22 #include <keymaster/ec_key_factory.h>
     23 
     24 #include "ec_key.h"
     25 
     26 namespace keymaster {
     27 
     28 class Keymaster0Engine;
     29 class SoftKeymasterContext;
     30 
     31 /**
     32  * An EcdsaKeyFactory which can delegate key generation, importing and loading operations to a
     33  * keymaster0-backed OpenSSL engine.
     34  */
     35 class EcdsaKeymaster0KeyFactory : public EcKeyFactory {
     36     typedef EcKeyFactory super;
     37 
     38   public:
     39     EcdsaKeymaster0KeyFactory(const SoftKeymasterContext* context, const Keymaster0Engine* engine);
     40 
     41     keymaster_error_t GenerateKey(const AuthorizationSet& key_description,
     42                                   KeymasterKeyBlob* key_blob, AuthorizationSet* hw_enforced,
     43                                   AuthorizationSet* sw_enforced) const override;
     44 
     45     keymaster_error_t ImportKey(const AuthorizationSet& key_description,
     46                                 keymaster_key_format_t input_key_material_format,
     47                                 const KeymasterKeyBlob& input_key_material,
     48                                 KeymasterKeyBlob* output_key_blob, AuthorizationSet* hw_enforced,
     49                                 AuthorizationSet* sw_enforced) const override;
     50 
     51     keymaster_error_t LoadKey(const KeymasterKeyBlob& key_material,
     52                               const AuthorizationSet& additional_params,
     53                               const AuthorizationSet& hw_enforced,
     54                               const AuthorizationSet& sw_enforced,
     55                               UniquePtr<Key>* key) const override;
     56 
     57   private:
     58     const Keymaster0Engine* engine_;
     59 };
     60 
     61 class EcKeymaster0Key : public EcKey {
     62   public:
     63     EcKeymaster0Key(EC_KEY* ec_key, const AuthorizationSet& hw_enforced,
     64                     const AuthorizationSet& sw_enforced, keymaster_error_t* error)
     65         : EcKey(ec_key, hw_enforced, sw_enforced, error) {}
     66 };
     67 
     68 }  // namespace keymaster
     69 
     70 #endif  // SYSTEM_KEYMASTER_EC_KEYMASTER0_KEY_H_
     71