alts_counter.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_COUNTER_H
#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H
 
#include <grpc/support/port_platform.h>
 
#include <stdbool.h>
#include <stdlib.h>
 
#include <grpc/grpc.h>
 
/* Main struct for a crypter counter managed within seal/unseal operations. */
typedef struct alts_counter {
  size_t size;
  size_t overflow_size;
  unsigned char* counter;
} alts_counter;
 
grpc_status_code alts_counter_create(bool is_client, size_t counter_size,
                                     size_t overflow_size,
                                     alts_counter** crypter_counter,
                                     char** error_details);
 
grpc_status_code alts_counter_increment(alts_counter* crypter_counter,
                                        bool* is_overflow,
                                        char** error_details);
 
size_t alts_counter_get_size(alts_counter* crypter_counter);
 
unsigned char* alts_counter_get_counter(alts_counter* crypter_counter);
 
void alts_counter_destroy(alts_counter* crypter_counter);
 
#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_ALTS_COUNTER_H */