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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 (based on username and MAC address of the ethernet adaptor or user provided key), 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

namespace cr
{
namespace utils
{

/// License class.
class License
{
public:

    /// Get License class version.
    static std::string getVersion();

    /// Create token based on user name and key (if key is empty, MAC address is used).
    std::string getToken(std::string userName, std::string key = "");

    /// Extract information from a token.
    bool getTokenInfo(std::string token, std::string &userName,
                      std::string &key);

    /// Initialize a license.
    bool getLicense(std::string token, int days, std::string &license);

    /// Extract info from a license.
    bool getLicenseInfo(std::string license, std::string &userName,
                        std::string &key, int &daysLeft);

    /// Check status of license. If key is empty, MAC address is used.
    bool checkLicense(std::string license, std::string userName, std::string key = "");
};
}
}

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;