Function CreateModuleAad

cpp/src/parquet/encryption/encryption_internal.cc:722–748

}

std::string CreateModuleAad(const std::string& file_aad, int8_t module_type,
                            int16_t row_group_ordinal, int16_t column_ordinal,
                            int32_t page_ordinal) {
  CheckPageOrdinal(page_ordinal);
  const int16_t page_ordinal_short = static_cast<int16_t>(page_ordinal);
  int8_t type_ordinal_bytes[1];
  type_ordinal_bytes[0] = module_type;
  std::string type_ordinal_bytes_str(reinterpret_cast<const char*>(type_ordinal_bytes),
                                     1);
  if (kFooter == module_type) {
    std::string result = file_aad + type_ordinal_bytes_str;
    return result;
  }
  std::string row_group_ordinal_bytes = ShortToBytesLe(row_group_ordinal);
  std::string column_ordinal_bytes = ShortToBytesLe(column_ordinal);
  if (kDataPage != module_type && kDataPageHeader != module_type) {
    std::ostringstream out;
    out << file_aad << type_ordinal_bytes_str << row_group_ordinal_bytes
        << column_ordinal_bytes;
    return out.str();
  }
  std::string page_ordinal_bytes = ShortToBytesLe(page_ordinal_short);
  std::ostringstream out;
  out << file_aad << type_ordinal_bytes_str << row_group_ordinal_bytes
      << column_ordinal_bytes << page_ordinal_bytes;
  return out.str();
}

std::string CreateFooterAad(const std::string& aad_prefix_bytes) {
  return CreateModuleAad(aad_prefix_bytes, kFooter, static_cast<int16_t>(-1),