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License C++ lib. Easy way to add licensing in your application

€250.00

License C++ library provides a licensing feature for C++ applications.

We sell source code of this library as is, without future updates and technical support according to perpetual non-exclusive royalty-free license. You pay once and can use this library in your software and hardware products without limits. Please read the license agreement before purchasing: LICENSE.

License C++ library provides a licensing feature for C++ applications.

We sell source code of this library as is, without future updates and technical support according to perpetual non-exclusive royalty-free license. You pay once and can use this library in your software and hardware products without limits. Please read the license agreement before purchasing: LICENSE.

Overview

License C++ library offers a licensing feature for C++ applications. The library provides functions for generating a token (base on username and MAC address of the computer), creating a license based on it, and validating the license with control of its validity time. AES256 encryption method is implemented. To embed licensing in a C++ application, generate a token, then based on the token and the required number of days generate a license string (key). License checking in the application is performed by a single library function. The library doesn’t have any third-party dependencies and provide simple interface. It uses C++17 standard and compatible with Linux and Windows.

Documentation

Documentation: GOT TO DOCUMENTATION

Simple interface

#include <iostream>
#include "License.h"

int main(void)
{
    std::cout << "LicenseGenerator v" <<
    cr::utils::License::getVersion() << std::endl;

    // Set user name to generate license.
    std::string userName = "";
    std::cout << "Enter the UserName to generate license: ";
    std::cin >> userName;

    // Set license duration.
    int days = 0;
    std::cout << "Enter license duration [days]: ";
    std::cin >> days;

    // Create License object and generate token for license.
    cr::utils::License lic;
    std::string token = lic.getToken(userName);
    std::cout << "Token for " << userName << ": " <<
    token << std::endl;

    // Generate license.
    std::string license = "";
    if (!lic.getLicense(token, days, license))
    {
        std::cout << "Invalid token for " <<
        userName << " !" << std::endl;
        return -1;
    }

    // Check license.
    if (!lic.checkLicense(license, userName))
    {
        std::cout << "Invalid license for " <<
        userName << " !" << std::endl;
        return -1;
    }

    // Show license.
    std::cout << "License for " << userName <<
    "[" << days << " days]: " << license << std::endl;

    // Wait user input.
    std::cin.get();
    std::cin.get();
    return 1;
}

Token string generation

std::string userName = "AnyUserName"; // Set by user.
cr::utils::License lic;
std::string token = lic.getToken(userName);

License string generation based on token

std::string license = ""; // Variable to store license string.
std::string token =
"0255D7EE2DFCFF80..."; // Example.
int days = 20; // License for 20 days, example.
if (!lic.getLicense(token, days, license))
{
   std::cout << "Invalid token for " <<
   userName << " !" << std::endl;
   return -1;
}

License validation

std::string license =
"EE8C15F833832FF0BD..."; // Example.
std::string userName = "AnyUserName";
cr::utils::License lic;
if (!lic.checkLicense(license, userName))
{
   std::cout << "Invalid license for " <<
   userName << " !" << std::endl;
   return -1;
}
std::cout << "License valid!" << std::endl;

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