Function CreateMd5FileChecksum

lib/mdflib/mdflib/src/cryptoutil.cpp:244–284

namespace mdf {

bool CreateMd5FileChecksum(const std::string &file, std::vector<uint8_t> &md5) {
  bool ok = false;
  if (md5.size() != 16) {
    md5.resize(16);
  }

  try {
    fs::path p = fs::u8path(file);
    if (fs::exists(p)) {
      std::FILE *f = nullptr;
      Platform::fileopen(&f, file.c_str(), "rb");
      if (f != nullptr) {
        std::array<uint8_t, 10000> temp{};
        MD5_CTX ctx{};
        MD5_Init(&ctx);
        for (auto bytes =
                 std::fread(temp.data(), sizeof(uint8_t), temp.size(), f);
             bytes > 0;
             bytes = std::fread(temp.data(), sizeof(uint8_t), temp.size(), f)) {
          MD5_Update(&ctx, temp.data(), static_cast<unsigned long>(bytes));
        }
        fclose(f);
        MD5_Final(md5.data(), &ctx);
        ok = true;
      } else {
        MDF_ERROR() << "Failed to create MD5 file checksum. File: " << file
                    << ". Error: Failed to open the file";
      }

    } else {
      MDF_ERROR() << "Failed to create MD5 file checksum. File: " << file
                  << ". Error: The file doesn't exist";
    }

  } catch (const std::exception &error) {
    MDF_ERROR() << "Failed to create MD5 file checksum. File: " << file
                << ". Error: " << error.what();
    ok = false;
  }
  return ok;
}

std::string CreateMd5FileString(const std::string &file) {
  std::vector<uint8_t> checksum(16, 0);