Function RandBytes

cpp/src/parquet/encryption/encryption_internal.cc:764–780

}

void RandBytes(unsigned char* buf, size_t num) {
  if (num > static_cast<size_t>(std::numeric_limits<int>::max())) {
    std::stringstream ss;
    ss << "Length " << num << " for RandBytes overflows int";
    throw ParquetException(ss.str());
  }
  openssl::EnsureInitialized();
  int status = RAND_bytes(buf, static_cast<int>(num));
  if (status != 1) {
    const auto error_code = ERR_get_error();
    char buffer[256];
    ERR_error_string_n(error_code, buffer, sizeof(buffer));
    std::stringstream ss;
    ss << "Failed to generate random bytes: " << buffer;
    throw ParquetException(ss.str());
  }
}

void EnsureBackendInitialized() { openssl::EnsureInitialized(); }