common.hpp

/**
 * Copyright Soramitsu Co., Ltd. 2017 All Rights Reserved.
 * http://soramitsu.co.jp
 *
 * 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 AMETSUCHI_COMMON_HPP
#define AMETSUCHI_COMMON_HPP

#include <array>
#include <cstdio>

namespace iroha {

  /**
   * std::string is convenient to use but it is not safe.
   * We can not specify the fixed length for string.
   *
   * For std::array it is possible, so we prefer it over std::string.
   */

  template<size_t size>
  using blob_t = std::array<uint8_t, size>;

  template<size_t size>
  using hash_t = blob_t<size>;

  using hash224_t = hash_t<224 / 8>;
  using hash256_t = hash_t<256 / 8>;
  using hash384_t = hash_t<384 / 8>;
  using hash512_t = hash_t<512 / 8>;

  namespace crypto {
    namespace ed25519 {
      using sign_t = blob_t<64>;  // ed25519 sig is 64 bytes length
      using pubkey_t = blob_t<32>;
      using privkey_t = blob_t<64>;
    }
  }

  // timestamps
  using ts64_t = uint64_t;
  using ts32_t = uint32_t;

}  // namespace iroha
#endif  // AMETSUCHI_COMMON_HPP