🪪 DV2 - Easy-to-use DRM Framework for C++

📚 Features

• 🔐/🔓 License generation/validation using a secret key
• ⛓️‍💥 Custom, highly customizable license format
• 0️⃣ No dependencies
• 📦 Single header file

📖 Documentation

You can also find the list of examples in the example folder.

🔐 Generating a License

#include "drm.hpp"

int main() {
  DV2::Internal::License license;
  license.expirationTime = getTimeOffset(3600); // Expire in 1 hour
  license.licenseLevel = 1; // Level of authorization, for example, 1 = free tier, 2 = premium, etc.

  // Keep this secret! This is the key that will be used to generate and validate the license (can be of any length)
  DV2::Internal::ByteArray secretKey = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
                                        0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C};

  DV2::Internal::ByteArray licenseBytes =
      DV2::Generation::generateLicense(license, secretKey);

  // The type DV2::Internal::ByteArray is just an alias for std::vector<uint8_t>, which means you can encode it as a hex string,
  // then show it to the user, or save it to a file, etc.
}

🔓 Validating a License

#include "drm.hpp"

int main() {
  DV2::Internal::ByteArray secretKey = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
                                        0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C};

  DV2::Internal::ByteArray licenseBytes = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
                                           0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C};

  try {
    // NOTE: If you don't want to throw an exception when the license is expired, you can set the third parameter to false (default is true)
    DV2::Internal::License parsedLicense =
        DV2::Validation::parseLicense(licenseBytes, secretKey);
    std::cout << "Parsed license:" << std::endl;

    char timeBuffer[128];
    std::tm *ptm = std::localtime(&parsedLicense.expirationTime);
    std::strftime(timeBuffer, sizeof(timeBuffer), "%Y-%m-%d %H:%M:%S %Z", ptm);

    std::cout << "\tExpiration Time (raw): " << parsedLicense.expirationTime
              << std::endl;
    std::cout << "\tExpiration Time (str): " << timeBuffer << std::endl;
    std::cout << "\tLicense Level:         " << parsedLicense.licenseLevel
              << std::endl;

  } catch (const std::exception &e) {
    // The license is invalid
    std::cerr << "Error parsing license: " << e.what() << std::endl;
  }
}

📜 License

This project is licensed under the Apache License 2.0. More information can be found in the LICENSE file.