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      1 /*
      2  * Copyright 2014 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_KEY_H_
     18 #define SYSTEM_KEYMASTER_EC_KEY_H_
     19 
     20 #include <openssl/ec.h>
     21 
     22 #include "asymmetric_key.h"
     23 #include "openssl_utils.h"
     24 
     25 namespace keymaster {
     26 
     27 class EcdsaOperationFactory;
     28 
     29 class EcKey : public AsymmetricKey {
     30   public:
     31     EcKey(const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced,
     32           keymaster_error_t* error)
     33         : AsymmetricKey(hw_enforced, sw_enforced, error) {}
     34 
     35     bool InternalToEvp(EVP_PKEY* pkey) const override;
     36     bool EvpToInternal(const EVP_PKEY* pkey) override;
     37 
     38     EC_KEY* key() const { return EC_KEY_dup(ec_key_.get()); }
     39 
     40   protected:
     41     EcKey(EC_KEY* ec_key, const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced,
     42           keymaster_error_t* error)
     43         : AsymmetricKey(hw_enforced, sw_enforced, error), ec_key_(ec_key) {}
     44 
     45   private:
     46     UniquePtr<EC_KEY, EC_Delete> ec_key_;
     47 };
     48 
     49 }  // namespace keymaster
     50 
     51 #endif  // SYSTEM_KEYMASTER_EC_KEY_H_
     52