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/*
*
* Copyright 2018 gRPC authors.
*
* 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 GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H
#include <grpc/support/port_platform.h>
#include <stdbool.h>
#include "src/core/tsi/transport_security_interface.h"
typedef struct alts_frame_protector alts_frame_protector;
/**
* TODO: Add a parameter to the interface to support the use of
* different record protocols within a frame protector.
*
* This method creates a frame protector.
*
* - key: a symmetric key used to seal/unseal frames.
* - key_size: the size of symmetric key.
* - is_client: a flag indicating if the frame protector will be used at client
* (is_client = true) or server (is_client = false) side.
* - is_rekey: a flag indicating if the frame protector will use an AEAD with
* rekeying.
* - max_protected_frame_size: an in/out parameter indicating max frame size
* to be used by the frame protector. If it is nullptr, the default frame
* size will be used. Otherwise, the provided frame size will be adjusted (if
* not falling into a valid frame range) and used.
* - self: a pointer to the frame protector returned from the method.
*
* This method returns TSI_OK on success and TSI_INTERNAL_ERROR otherwise.
*/
tsi_result alts_create_frame_protector(const uint8_t* key, size_t key_size,
bool is_client, bool is_rekey,
size_t* max_protected_frame_size,
tsi_frame_protector** self);
#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_FRAME_PROTECTOR_H */
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