| /* |
| * 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_OCB_UTILS_H_ |
| #define SYSTEM_KEYMASTER_OCB_UTILS_H_ |
| |
| #include "ae.h" |
| |
| #include <hardware/keymaster_defs.h> |
| |
| #include <keymaster/serializable.h> |
| |
| namespace keymaster { |
| |
| class AuthorizationSet; |
| struct KeymasterKeyBlob; |
| |
| static const int OCB_NONCE_LENGTH = 12; |
| static const int OCB_TAG_LENGTH = 16; |
| |
| keymaster_error_t OcbEncryptKey(const AuthorizationSet& hw_enforced, |
| const AuthorizationSet& sw_enforced, const AuthorizationSet& hidden, |
| const KeymasterKeyBlob& master_key, |
| const KeymasterKeyBlob& plaintext, const Buffer& nonce, |
| KeymasterKeyBlob* ciphertext, Buffer* tag); |
| |
| keymaster_error_t OcbDecryptKey(const AuthorizationSet& hw_enforced, |
| const AuthorizationSet& sw_enforced, const AuthorizationSet& hidden, |
| const KeymasterKeyBlob& master_key, |
| const KeymasterKeyBlob& ciphertext, const Buffer& nonce, |
| const Buffer& tag, KeymasterKeyBlob* plaintext); |
| |
| } // namespace keymaster |
| |
| #endif // SYSTEM_KEYMASTER_OCB_UTILS_H_ |