| /* |
| * 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_ASYMMETRIC_KEY_H |
| #define SYSTEM_KEYMASTER_ASYMMETRIC_KEY_H |
| |
| #include <openssl/evp.h> |
| |
| #include "key.h" |
| |
| namespace keymaster { |
| |
| class AsymmetricKeyFactory : public KeyFactory { |
| protected: |
| EVP_PKEY* ExtractEvpKey(keymaster_key_format_t key_format, |
| keymaster_algorithm_t expected_algorithm, const uint8_t* key_data, |
| size_t key_data_length, keymaster_error_t* error); |
| |
| virtual const keymaster_key_format_t* SupportedImportFormats(size_t* format_count); |
| virtual const keymaster_key_format_t* SupportedExportFormats(size_t* format_count); |
| }; |
| |
| class AsymmetricKey : public Key { |
| public: |
| protected: |
| AsymmetricKey(const KeyBlob& blob) : Key(blob) {} |
| keymaster_error_t LoadKey(const UnencryptedKeyBlob& blob); |
| |
| /** |
| * Return a copy of raw key material, in the key's preferred binary format. |
| */ |
| virtual keymaster_error_t key_material(UniquePtr<uint8_t[]>* material, size_t* size) const; |
| |
| /** |
| * Return a copy of raw key material, in the specified format. |
| */ |
| virtual keymaster_error_t formatted_key_material(keymaster_key_format_t format, |
| UniquePtr<uint8_t[]>* material, |
| size_t* size) const; |
| |
| protected: |
| AsymmetricKey(const AuthorizationSet& auths) : Key(auths) {} |
| |
| private: |
| virtual int evp_key_type() = 0; |
| virtual bool InternalToEvp(EVP_PKEY* pkey) const = 0; |
| virtual bool EvpToInternal(const EVP_PKEY* pkey) = 0; |
| }; |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_ASYMMETRIC_KEY_H |