| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SYSTEM_KEYMASTER_EC_KEY_H_ |
| #define SYSTEM_KEYMASTER_EC_KEY_H_ |
| |
| #include <openssl/ec.h> |
| |
| #include "asymmetric_key.h" |
| |
| namespace keymaster { |
| |
| class EcKeyFactory : public AsymmetricKeyFactory { |
| public: |
| Key* GenerateKey(const AuthorizationSet& key_description, keymaster_error_t* error) override; |
| Key* ImportKey(const AuthorizationSet& key_description, keymaster_key_format_t key_format, |
| const uint8_t* key_data, size_t key_data_length, |
| keymaster_error_t* error) override; |
| Key* LoadKey(const UnencryptedKeyBlob& blob, keymaster_error_t* error) override; |
| |
| private: |
| static EC_GROUP* choose_group(size_t key_size_bits); |
| static keymaster_error_t get_group_size(const EC_GROUP& group, size_t* key_size_bits); |
| |
| struct EC_GROUP_Delete { |
| void operator()(EC_GROUP* p) { EC_GROUP_free(p); } |
| }; |
| }; |
| |
| class EcdsaKeyFactory : public EcKeyFactory { |
| public: |
| virtual keymaster_algorithm_t registry_key() const { return KM_ALGORITHM_EC; } |
| }; |
| |
| class EcdsaOperationFactory; |
| |
| class EcKey : public AsymmetricKey { |
| private: |
| friend EcKeyFactory; |
| friend EcdsaKeyFactory; |
| friend EcdsaOperationFactory; |
| |
| EcKey(const UnencryptedKeyBlob& blob, keymaster_error_t* error); |
| EcKey(EC_KEY* ec_key, const AuthorizationSet auths) : AsymmetricKey(auths), ec_key_(ec_key) {} |
| |
| virtual int evp_key_type() { return EVP_PKEY_EC; } |
| virtual bool InternalToEvp(EVP_PKEY* pkey) const; |
| virtual bool EvpToInternal(const EVP_PKEY* pkey); |
| |
| struct EC_Delete { |
| void operator()(EC_KEY* p) { EC_KEY_free(p); } |
| }; |
| |
| EC_KEY* key() const { return EC_KEY_dup(ec_key_.get()); } |
| |
| UniquePtr<EC_KEY, EC_Delete> ec_key_; |
| }; |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_EC_KEY_H_ |