| /** @file |
| * |
| * QUIC Packet Payload Protector |
| * |
| * @section license License |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #pragma once |
| |
| #include "I_IOBuffer.h" |
| #include "QUICTypes.h" |
| #include "QUICKeyGenerator.h" |
| |
| class QUICPacketProtectionKeyInfo; |
| |
| class QUICPacketPayloadProtector |
| { |
| public: |
| QUICPacketPayloadProtector(const QUICPacketProtectionKeyInfo &pp_key_info) : _pp_key_info(pp_key_info) {} |
| |
| Ptr<IOBufferBlock> protect(const Ptr<IOBufferBlock> protected_payload, const Ptr<IOBufferBlock> unprotected_payload, |
| uint64_t pkt_num, QUICKeyPhase phase) const; |
| Ptr<IOBufferBlock> unprotect(const Ptr<IOBufferBlock> unprotected_payload, const Ptr<IOBufferBlock> protected_payload, |
| uint64_t pkt_num, QUICKeyPhase phase) const; |
| |
| private: |
| const QUICPacketProtectionKeyInfo &_pp_key_info; |
| |
| bool _unprotect(uint8_t *plain, size_t &plain_len, size_t max_plain_len, const uint8_t *protected_payload, |
| size_t protected_payload_len, uint64_t pkt_num, const uint8_t *ad, size_t ad_len, const uint8_t *key, |
| const uint8_t *iv, size_t iv_len, const EVP_CIPHER *cipher, size_t tag_len) const; |
| bool _protect(uint8_t *protected_payload, size_t &protected_payload_len, size_t max_protected_payload_len, |
| const Ptr<IOBufferBlock> plain, uint64_t pkt_num, const uint8_t *ad, size_t ad_len, const uint8_t *key, |
| const uint8_t *iv, size_t iv_len, const EVP_CIPHER *cipher, size_t tag_len) const; |
| |
| void _gen_nonce(uint8_t *nonce, size_t &nonce_len, uint64_t pkt_num, const uint8_t *iv, size_t iv_len) const; |
| }; |