Tiny License Framework for Java

It's an open source (Apache license) tiny (only 14KB) license framework in Java, with zero dependencies and a quick learning curve.

How to use

LicenseManager licenseManager = LicenseManager.getInstance();
License license = licenseManager.getLicense();
licenseManager.isValidLicense(license);

In private.key file exists the private key used to create the license.
In public.key file exists the public key used to validate the license.
The public key (public.key) is delivered with your application jar.

To create a new license, you must create a template file (template.dat) that contains all license's components and to run LicenseTool.
If the private key or the public key doesn't exists then Licensius will create these files for you. The license will be a license.dat file.

By default Licensius using DSA algorithm (the key length in bits is 1024) for generating keys (private and public).

Licensius uses X509EncodedKeySpec to encode the public key and PKCS8EncodedKeySpec to encode the private key. Both public.key file and private.key file are binaries.

In example folder you have an example for license template (input) and and its associated license (output).

The content for template.dat can be (see example folder):

expirationDate=9/12/2020
companyName=HomeOffice
emailAddress=office@home.ro

In this case the content for license.dat (the license) is:

#License file
#Fri Feb 13 14:57:14 EET 2015
expirationDate=9/12/2020
companyName=HomeOffice
emailAddress=office@home.ro
signature=MCwCFBEzxwxCPSrWwYj1lsfyDDMKEhMmAhRtDi2klZeDojMK3HBF7xaC3OBj9A\=\=

Using Maven

In your pom.xml you must define the dependencies to Licensius artifacts with:

<dependency>
    <groupId>ro.fortsoft.licensius</groupId>
    <artifactId>licensius</artifactId>
    <version>${licensius.version}</version>
</dependency>    

where ${licensius.version} is the last licensius version.

You may want to check for the latest released version using Maven Search

How to build

Requirements:

• Git
• JDK 7 (test with java -version)
• Apache Maven 3 (test with mvn -version)

Steps:

• create a local clone of this repository (with git clone https://github.com/decebals/licensius.git)
• go to project's folder (with cd licensius)
• build the artifacts (with mvn clean package or mvn clean install)

After above steps a folder licensius/target is created and all goodies are in that folder.

Versioning

Licensius will be maintained under the Semantic Versioning guidelines as much as possible.

Releases will be numbered with the follow format:

<major>.<minor>.<patch>

And constructed with the following guidelines:

• Breaking backward compatibility bumps the major
• New additions without breaking backward compatibility bumps the minor
• Bug fixes and misc changes bump the patch

For more information on SemVer, please visit http://semver.org/.

License

Copyright 2015 Decebal Suiu

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.