alts_crypter.h

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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_CRYPTER_H
#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H
 
#include <grpc/support/port_platform.h>
 
#include <stdbool.h>
#include <string.h>
 
#include <grpc/grpc.h>
 
#include "src/core/tsi/alts/crypt/gsec.h"
 
typedef struct alts_crypter alts_crypter;
 
/* V-table for alts_crypter operations */
typedef struct alts_crypter_vtable {
  size_t (*num_overhead_bytes)(const alts_crypter* crypter);
  grpc_status_code (*process_in_place)(alts_crypter* crypter,
                                       unsigned char* data,
                                       size_t data_allocated_size,
                                       size_t data_size, size_t* output_size,
                                       char** error_details);
  void (*destruct)(alts_crypter* crypter);
} alts_crypter_vtable;
 
/* Main struct for alts_crypter interface */
struct alts_crypter {
  const alts_crypter_vtable* vtable;
};
 
size_t alts_crypter_num_overhead_bytes(const alts_crypter* crypter);
 
grpc_status_code alts_crypter_process_in_place(
    alts_crypter* crypter, unsigned char* data, size_t data_allocated_size,
    size_t data_size, size_t* output_size, char** error_details);
 
grpc_status_code alts_seal_crypter_create(gsec_aead_crypter* gc, bool is_client,
                                          size_t overflow_size,
                                          alts_crypter** crypter,
                                          char** error_details);
 
grpc_status_code alts_unseal_crypter_create(gsec_aead_crypter* gc,
                                            bool is_client,
                                            size_t overflow_size,
                                            alts_crypter** crypter,
                                            char** error_details);
 
void alts_crypter_destroy(alts_crypter* crypter);
 
#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_CRYPTER_H */