Method gen_deterministic_prefix

tdport/td/e2e/MessageEncryption.cpp:41–47

}

td::SecureString MessageEncryption::gen_deterministic_prefix(td::int64 data_size, td::int64 min_padding) {
  td::SecureString buff(
      td::narrow_cast<size_t>(((min_padding + 15 + data_size) & ~static_cast<td::int64>(15)) - data_size), '\0');
  buff.as_mutable_slice().ubegin()[0] = td::narrow_cast<td::uint8>(buff.size());
  CHECK((buff.size() + data_size) % 16 == 0);
  return buff;
}

td::SecureString MessageEncryption::kdf(td::Slice secret, td::Slice password, int iterations) {
  td::SecureString new_secret(64);